Peterbilt 579 (2021) Operator’s Manual

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579

MODEL

Safety..................................... 1

Emergency..................................... 2

Controls..................................... 3

Driving..................................... 4

Maintenance..................................... 5

Information..................................... 6

This manual illustrates and describes the operation of features or equipment which may be either standard or optional on this vehicle. This manual may also include a description of features and equipment which are no longer available or were not ordered on this vehicle. Please disregard any illustrations or descriptions relating to features or equipment which are not on this vehicle. PACCAR reserves the right to discontinue, change specifications, or change the design of its vehicles at any time without notice and without incurring any obligation. The information contained in this manual is proprietary to PACCAR. Reproduction, in whole or in part, by any means is strictly prohibited without prior written authorization from PACCAR Inc.

Chapter 1 | SAFETY

Using this Manual

Safety Alerts..........................................................................................................................................6

Illustrations............................................................................................................................................7

General Safety Instructions...................................................................................................................7

Data Recorder.....................................................................................................................................10

Environmental Protection Agency.......................................................................................................10

Repairs................................................................................................................................................ 11

Additional Sources of Information....................................................................................................... 12

Cab Access.........................................................................................................................................12

How to Access the Upper Bunk.......................................................................................................... 14

Deckplate Access................................................................................................................................19

How to open the hood.........................................................................................................................20

Seat.....................................................................................................................................................23

What to do before starting the vehicle.................................................................................................32

Vehicle Loading...................................................................................................................................34

Visual inspection while approaching the vehicle.................................................................................34

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..................................................................................................................................6

Daily Checks....................................................................................................................................... 35

Weekly Checks................................................................................................................................... 36

Systems Check................................................................................................................................... 37

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Using this Manual

Please take the time to get acquainted with your vehicle by reading this Operator’s Manual. We recommend that you read and understand this manual from beginning to end before you operate this equipment. This manual contains useful information for the safe and efficient operation of this equipment. It also provides service information, with an outline for performing safety checks and basic preventive maintenance inspections. We have tried to present the information you’ll need to learn about functions, controls, and operation— and to present it as clearly as possible. We hope you’ll find this manual easy to use. There will be times when you need to take this manual out of the glovebox. When you do, please be sure to return it when you are finished using it.

NOTE

After you've read this manual, it should be

stored in the cab for convenient reference and remain with this truck when sold.

Your vehicle may not have all the features or options mentioned in this manual. Therefore, you should pay careful attention to the instructions that pertain to just your vehicle. In addition, if your vehicle is equipped with special equipment or options not discussed in this manual, consult your dealer or the manufacturer of the equipment. There are several tools built into this manual to help you find what you need quickly and easily; first is the Quick T of Contents. Located at the front of the manual, this table lists the main subjects covered and gives section numbers where you can find these subjects. Use the Quick Table of Contents to find information on a large subject and then use the detailed table of contents found on the first page of each chapter. Cross-referenced citations also help you get the information you need. If some other part of the manual contains further information on the subject you are reading about, we’ll indicate that in a crossreference like this: (See Safety Alerts on page 6). Finally, you’ll find a helpful Subject Index. It’s in the back of the manual and alphabetically lists the subjects covered. All information contained in this manual is based on the latest production information

able

available at the time of publication. Peterbilt Motors Company reserves the right to make changes at any time without notice.

Safety Alerts

Read and follow all of the safety alerts contained in this manual. They are there for your protection and information. These alerts can help you avoid injury to yourself, your passengers, and help prevent costly damage to the vehicle. Safety alerts are highlighted by safety alert symbols and signal words such as “WARNING,” “CAUTION,” or “NOTE.” DO NOT ignore any of these alerts.

Warnings

The safety message following this symbol and signal word provides a warning against operating procedures which could cause death or injury equipment or property damage. The alert will identify the hazard, how to avoid it, and

. They could also cause

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the probable consequence of not avoiding the hazard. Example:

WARNING

Hot engine oil can be dangerous. You

be burned. Let the engine oil

could cool down before changing it. Failure to comply may result in death, personal injury, equipment or property damage.

Cautions

The safety message following this symbol and signal word provides a caution against operating procedures which could cause equipment or property damage. The alert will identify the hazard, how to avoid it, and the probable consequence of not avoiding the hazard. Example:

CAUTION

Continuing to operate your vehicle with

ficient oil pressure will cause seri-

insuf ous engine damage. Failure to comply may result in equipment or property damage.

Notes

The message following this symbol and signal word provides important information that is not safety related but should be followed. The alert will highlight things that may not be obvious and is useful to your ef

ficient operation of the vehicle.

Example:

NOTE

Pumping the accelerator will not assist in starting the engine.

Illustrations

Some of the illustrations throughout this manual are generic and will not look exactly like the engine or parts used in your application. The illustrations can contain symbols to indicate an action required and/or an acceptable or unacceptable condition. The illustrations are intended to show repair or replacement procedures. The procedure will be the same for all applications, although the illustrations may differ.

General Safety Instructions

WARNING

Improper practices, carelessness, or ignoring any warnings may cause property damage, personal injury, or death.

Y53-6110-1A1 (01/21)

WARNING

Manually rotating the crankshaft requires a trained technician and specialty tools. DO NOT pull or pry on the fan in an attempt to rotate the crankshaft. Applying force to the fan can damage the fan blades or cause premature fan failure. Failure to comply with the approved procedure may result in property damage, personal injury

Before performing any repair, read and understand all of the safety precautions and warnings. The following is a list of general safety precautions that must be followed to provide personal safety to follow these instructions may cause death or injury. Special safety precautions are included in the procedures when they apply. Keep in mind that even a well maintained vehicle must be operated within the range of its mechanical capabilities and the limits of its load ratings. See the Weight Ratings label on the driver's door edge. Every new vehicle is designed to conform to all Federal Motor Vehicle Safety Standards applicable at the time of manufacture. Even with these safety

, or death.

. Failure

features, continued safe and reliable operation depends greatly upon regular vehicle maintenance. Follow the maintenance recommendations found in the Preventive Maintenance section. This will help preserve your investment. Make sure your vehicle is in top working condition before heading out on the road, it is the responsible driver's duty to do so. Inspect the vehicle according to the Driver's Check List.

Work areas should be dry, well lit,

• well ventilated, free from clutter, loose tools, parts, ignition sources and hazardous substances.

• Wear protective glasses and protective shoes when working.

• DO NOT wear loose-fitting or torn clothing. Tie back and/or tuck in long hair. Remove all jewelry when working.

• Before beginning any repair, disconnect the battery (negative [-] cable) and discharge any capacitors.

• Put a “DO NOT OPERATE” tag in the operator's compartment or on the controls.

• Allow the engine to cool before slowly loosening the coolant fill cap

to relieve the pressure from the cooling system.

WARNING

Removing the fill cap on a hot engine

cause scalding coolant to spray

can out and burn you badly. If the engine has been in operation within the previous 30 minutes, be very careful in removing the fill cap. Protect face, hands, and arms against escaping fluid and steam by covering the cap with a large, thick rag. DO NOT try to remove it until the surge tank cools down or if you see any steam or coolant escaping. Always remove the cap very slowly and carefully. Be ready to back off if any steam or coolant begins to escape. Failure to comply may result in death, personal injury, equipment or property damage.

• Always use wheel chocks or proper jack stands to support the vehicle or vehicle components before performing any service work. DO NOT work on anything that is supported only by lifting jacks or a hoist. Before resting a vehicle on jack stands, be sure the stands are

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rated for the load you will be placing on them.

Before removing or disconnecting

• any lines, fittings, or related items, relieve all pressure in the air, oil, fuel, and cooling systems. Remain alert for possible pressure when disconnecting any device from a system that contains pressure. High pressure oil or fuel can cause death or personal injury.

• Always wear protective clothing when working on any refrigerant lines and make sure that the workplace is well ventilated. Inhalation of fumes can cause death or personal injury. To protect the environment, liquid refrigerant systems must be properly emptied and filled using equipment that prevents the release of refrigerant gas. Federal law requires capturing and recycling refrigerant.

• When moving or lifting any heavy equipment or parts, make sure to use proper techniques and assistance. Ensure all lifting devices such as chains, hooks, or slings are in good condition and are of the correct load capacity.

Make sure all lifting devices are positioned correctly.

• Corrosion inhibitors and lubricating oils may contain alkali. DO NOT get the substance in eyes and avoid prolonged or repeated contact with skin. DO NOT swallow. If ingested, seek immediate medical attention. DO NOT induce vomiting. In case of contact, immediately wash skin with soap and water. In case of harmful contact, immediately contact a physician. Always keep any chemicals OUT OF REACH OF CHILDREN.

• Naphtha and Methyl Ethyl Ketone (MEK) are flammable materials and must be used with caution. Follow the manufacturer's instructions to ensure safety when using these materials. Always keep any chemicals OUT OF REACH OF CHILDREN.

• When working on the vehicle, be alert for hot parts on systems that have just been turned off, exhaust gas flow, and hot fluids in lines, tubes, and compartments. Contact with any hot surface may cause burns.

• Always use tools that are in good condition. Make sure you have the proper understanding of how to use the tools before performing any service work. Use only genuine replacement parts from PACCAR.

• Always use the same fastener part number (or equivalent) when replacing items. DO NOT use a fastener of lesser quality if replacements are necessary. (e.g., DO NOT replace a SAE 10.9 grade with 8.8 grade fastener.)

• Always torque fasteners and fuel connections to the required specifications. Overtightening or under-tightening can allow leakage.

• Close the manual fuel valves prior to performing maintenance and repairs, and when storing the vehicle inside.

• DO NOT perform any repair when impaired, tired, fatigued, or after consuming alcohol or drugs that can impair your functioning.

• Some state and federal agencies in the United States of America have determined that used engine oil can be carcinogenic and can cause reproductive toxicity. Avoid

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inhalation of vapors, ingestion, and prolonged contact with used engine oil.

DO NOT connect the jump starting

• or battery charging cables to any ignition or governor control wiring. This can cause electrical damage to the ignition or governor.

• Coolant is toxic. If not reused, dispose of coolant in accordance with local environmental regulations.

CAUTION

Corrosive chemicals can damage the engine. DO NOT use corrosive chemicals on the engine. Failure to comply may result in equipment or property damage.

California Proposition 65 Warning

• Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.

• The catalyst substrate located in the Diesel Particulate Filter (DPF)

contains vanadium pentoxide, which has been determined by the State of California to cause cancer Always wear protective clothing and eye protection when handling the catalyst assembly. Dispose of the catalyst in accordance with local regulations. If catalyst material gets into the eyes, immediately flood eyes with water for a minimum of 15 minutes. Avoid prolonged contact with skin. In case of contact, immediately wash skin with soap and water. In case of harmful contact, immediately contact a physician.

• Other chemicals in this vehicle are also known to the State of California to cause cancer, birth defects or other reproductive harm.

• Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

Data Recorder

California V Disclosure of Recording Device Your vehicle may be equipped with one or more recording devices commonly referred to as "event data recorders" (EDR) or "sensing and diagnostic modules" (SDM). If you are involved in an accident, the device(s) may have the ability to record vehicle data that occurred just prior to and/or during the accident. For additional information on your rights associated with the use of this data, contact:

• The California Department of Motor

• http://www.dmv.ca.gov/

ehicle Code - Section 9951 -

Vehicles - Licensing Operations Division

Environmental Protection Agency

Some of the ingredients in engine oil, hydraulic oil, transmission and axle oil, engine coolant, diesel fuel, air conditioning refrigerant (R12, R134a, and PAG oil), batteries, etc., may contaminate the

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environment if spilled or not disposed of

properly

WARNING

Diesel engine exhaust and some of its constituents California to cause cancer, birth defects, and other reproductive harm. Other chemicals in this vehicle are also known to the State of California to cause cancer, birth defects or other reproductive harm. This warning requirement is mandated by California law (Proposition 65) and does not result from any change in the manner in which vehicles are manufactured.

Contact your local government agency for information concerning proper disposal.

are known to the State of

Repairs

WARNING

DO NOT attempt repair work without suf

ficient training, service manuals,

and the proper tools. You could be kil-

led or injured, or you could make your vehicle tasks you are fully qualified to do.

unsafe. Perform only those

WARNING

Modifying your vehicle can make it un-

Some modifications can affect

safe. your vehicle's electrical system, stability, or other important functions. Before modifying your vehicle, check with your dealer to make sure it can be done safely. Improper modifications can cause death or personal injury.

CAUTION

The installation of electronic devices to the

On Board Diagnostics (OBD) connector, the vehicle Controller Area Network (CAN), or their associated wiring is not permitted. Doing so can adversely affect vehicle performance and/or cause fault codes to be recorded. The OBD connector is provided for temporary connection of service tools and for diagnostic purposes only.

Your dealer’s service center is the best place to have your vehicle repaired. Y can find dealers all over the country with the equipment and trained personnel to get you back on the road quickly—and keep you there. Your vehicle is a complex machine. Anyone attempting repairs on it needs good mechanical training and the proper tools. However, all warranty repairs must be performed by an authorized service facility. If you aren’t an experienced mechanic, or don’t have the right equipment, please leave all repairs to an authorized service facility. They are the ones best equipped to do the job safely and correctly.

Maintenance Manuals

If you do decide to do any complex repair work, you’ll need the maintenance manuals. Order them from your authorized dealer. Please provide your Chassis Serial Number when you order, to be sure you get the correct manuals for your vehicle. Allow about four weeks for delivery. There will be a charge for these manuals.

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Final Chassis Bill of Material

A complete, non-illustrated computer printout listing of the parts used to custombuild your vehicle is available through the dealer from whom you purchased your vehicle.

Additional Sources of Information

Major component suppliers also supply operation manuals specific to their products. Additional manuals and other pieces of literature are included in the glove box literature package. Look for information on products such as the engine, driver's seat, transmission, axles, wheels, tires, ABS/ESC, radio, fifth wheel, lane departure, and adaptive cruise control. If you are missing these pieces of literature, ask your dealer for copies. Another place to learn more about trucking is from local truck driving schools. Contact one near you to learn about courses they

fer. Federal and state agencies such as

of the department of licensing also have information. The Interstate Commerce Commission can give you information

about regulations governing transportation across state lines.

Cab Access

WARNING

Always reinstall steps before entering

cab or accessing the deck plate.

the Without steps you could slip and fall. Failure to comply may result in personal injury or death.

WARNING

Keep steps clean. Clean any fuel, oil, or

grease off the steps before entering the cab or accessing the deck plate. Stepping on a slippery surface can cause a fall which may result in death or personal injury.

Be careful whenever you get into or out of your vehicle’ least three points of contact with your hands on the grab handles and your feet on the steps. The following picture shows

s cab. Always maintain at

the best way to enter and exit a Conventional Cab.

WARNING

Jumping out of the cab or getting into

cab without proper care is danger-

the ous. You could slip and fall, which could lead to death or personal injury. Keep steps clean. Clean any fuel, oil, or grease off of the steps before entering the cab. Use the steps and grab handles provided, and always keep at least three points of contact between your hands and feet and the truck. Look where you are going.

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How to Lock and Unlock the Cab Doors

The vehicle has one key for cab doors, ignition, and the optional sleeper luggage compartment. Frame-mounted tool box locks and locking fuel tank caps each have separate, individual keys.

WARNING

To help lessen the chance and/or se-

of death or personal injury in

verity case of an accident, always lock the doors while driving. Along with using the lap shoulder belts properly, locking the doors helps prevent doors from inadvertently opening and occupants from being ejected from the vehicle.

To lock or unlock the doors from outside the cab:

Rotate the key toward the rear

• of the vehicle to lock (clockwise), or

• Rotate the key toward the front of the vehicle (counter clockwise) to unlock.

Remote Keyless Entry (Option)

Remote Keyless Entry (RKE) is a system that adds security and convenience to your vehicle. The system will lock or unlock cab doors with the key fob. The system will alert you with parking lights when the selected doors are locked or unlocked. The system includes two key fobs that provide

secure rolling code technology that prevents someone from recording the entry signal.

NOTE

FCC ID: L2C0031T IC: 3432A-0031T FCC

ID: L2C0032R IC: 3432A-0032R This device complies with Part 15 of the FCC Rules and with RSS-210 of Industry Canada. Operation is subject to the following two conditions (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressively approved by the party responsible for compliance could void the user's authority to operate the equipment. The term IC: before the radio certification number only signifies that Industry Canada technical specifications were met.

Operate Door Locks using Remote Keyless Entry

Open doors will not lock using the key fob. The key fob should be within 30 ft. (9 m) of

Y53-6110-1A1 (01/21) 13

the vehicle and should not be in proximity of other RF sources such as television, radio or cell phone transmitters.

o unlock the cab doors:

1. Press the UNLOCK button once. The driver's door will unlock and the parking lights will come on for 40 seconds.

2. Quickly press the UNLOCK button a second time within 5 seconds to unlock the passenger door.

3. Press the LOCK button. The doors will lock and the parking lights will come on for 2 seconds.

How to Access the Upper Bunk

Upper Bunk Ladder

This vehicle may be equipped with an upper bunk ladder. The ladder enables you to conveniently climb into the upper bunk without stepping on the lower bunk. The ladder can be unfolded when needed. The ladder folds up into the upper bunk structure when not in use, while driving, or when accessing the lower bunk. The

ladder can be folded up into the upper bunk.

Ladder Folded and Latched

Ladder Partially Unfolded

Ladder Unfolded

How to Unfold the Upper Bunk Ladder

It is important to follow all specified safety instructions when unfolding the upper bunk ladder

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WARNING

CAUTION

Unlatching the ladder

DO NOT attempt to fold or unfold the

while an occupant is in the low-

ladder er bunk. Allow the lower bunk occupant to vacate the bunk before folding or unfolding the ladder. Failure to do so may result in personal injury.

CAUTION

Upper bunk must be in down position before

folding and unfolding the ladder. Always lower the upper bunk before folding and unfolding the ladder. Failure to do so may result in property damage.

CAUTION

Lower bunk must be in down position

folding and unfolding the lad-

before der. Failure to do so may result in property damage.

Y53-6110-1A1 (01/21) 15

Make sure floor area is clear prior to

and unfolding the ladder. There

folding should be nothing between the ladder leg and floor carpet when the ladder is unfolded. Failure to do so may result in property damage.

1. Ensure the lower bunk is in the down position.

Lower the upper bunk.

3. Locate the release latch on the driver's side front edge of the upper bunk.

4. Release the ladder by pulling the latch out.

5. Position your left hand, open palm, beside the latch to control the unfolding action of the ladder as it separates from the bunk structure. Maintain contact with your left hand, open palm, in the same position until the ladder is completely unfolded.

When the ladder is about half way unfolded, position your right hand, open palm, on the upper right side of the ladder to help guide the ladder into position.

WARNING

DO NOT grip the ladder while folding

unfolding it. Always use an open

and hand when folding and unfolding the ladder to prevent injuries and pinching of fingers. Failure to comply may result in personal injury.

Hand Positions to Unfold the Ladder

CAUTION

Do not attempt to open the lower bunk

the ladder is unfolded and verti-

when cal. Failure to comply may result in property damage.

Apply pressure in opposite directions to ensure smooth operation of the ladder

CAUTION

Never attempt to pull the bottom of the ladder

forward when the ladder is in the down position. Failure to comply may result in property damage.

CAUTION

Never attempt to fold or force the lad-

toward the passenger side of the

der

7. Make sure the ladder is completely unfolded against the internal stop.

The ladder should be vertical at this point.

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vehicle once the ladder has reached vertical position and is against the internal stop inside the upper bunk. Doing so can cause damage to the ladder.

How to Climb In and Out of the Upper Bunk

WARNING

Face the ladder

WARNING

Make sure the ladder is fully open be-

climbing up or down the ladder.

fore The ladder should be against internal stops and vertical before using it. Failure to do so may result in death or personal injury.

WARNING

Never use the ladder while the vehicle is

in motion. Always fold and stow the ladder before moving the vehicle. Failure to comply may result in death or personal injury.

WARNING

Do not exceed the weight limit of 320

on the ladder. Failure to comply may

lb result in personal injury or death.

Y53-6110-1A1 (01/21) 17

Never climb a damaged, bent, or bro-

ladder. Doing so may result in per-

ken sonal injury.

WARNING

Never allow multiple people on the ladder

at the same time. Only one person on the ladder at any time. Failure to comply may result in personal injury.

Make sure the ladder is in the unfolded position.

Face the ladder when climbing up or down.

2. Maintain a firm grip when climbing up or down the ladder ladder and grab handles provided, and always keep at least three points of contact between your hands and feet and the truck. Always face toward the bunk when entering or exiting the upper bunk and look where you are going.

. Use the

3. As you get higher on the ladder, maintain contact with the sleeper upper grab handles as you get onto the upper bunk.

Upper Grab Handles

1. Upper Grab Handles

How to Fold the Upper Bunk Ladder

WARNING

DO NOT attempt to fold or unfold the

while an occupant is in the low-

ladder er bunk. Allow the lower bunk occupant to vacate the bunk before folding or unfolding the ladder. Failure to do so may result in personal injury.

CAUTION

Lower bunk must be in down position before

folding and unfolding the ladder. Failure to do so may result in property damage.

1. Ensure that the lower bunk is in the down position.

Position your left hand, open palm, against the lower left side of the ladder. Maintain contact with your left hand, open palm, in the same position until the ladder is completely folded.

3. Position your right hand, open palm, against the upper right side

of the ladder. Maintain contact with your left hand, open palm, in the same position until the ladder is approximately half-way folded.

Hand Positions to Fold the Ladder

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WARNING

DO NOT grip the ladder while folding

unfolding it. Always use an open

and hand when folding and unfolding the ladder to prevent injuries and pinching of fingers. Failure to comply may result in personal injury.

CAUTION

Lower bunk must be in down position before

folding and unfolding the ladder. Always fold the ladder before raising the lower bunk. Failure to do so may result in property damage.

Apply pressure in opposite directions to ensure smooth operation of the ladder

WARNING

Right hand must be clear of the ladder

it is approximately half-way fold-

when ed. Failure to do so may result in personal injury.

4. Use the right hand to apply pressure to the left and

simultaneously use the left hand to apply pressure to the right. The ladder will begin to fold up.

When the ladder is approximately

5. half-way folded, remove your right hand from the right side of the ladder.

6. Continue to push with your left hand until the ladder has been folded into the upper bunk structure.

7. Secure the latch.

Without steps you could slip and fall. Failure to comply may result in personal injury or death.

WARNING

Keep steps clean. Clean any fuel, oil,

grease off the steps before entering

or the cab or accessing the deck plate. Stepping on a slippery surface can cause a fall which may result in death or personal injury.

CAUTION

Make sure the ladder is fully closed while the vehicle is in motion. Failure to do so may result in property damage.

Deckplate Access

WARNING

When you are climbing onto and off the

deck plate, maintain at least three points of contact with your hands on the grab handles and your feet on the steps. Always face toward the vehicle when entering or exiting the cab and look where you are going. Failure to comply may result in death or personal injury.

WARNING

Always reinstall steps before entering the

cab or accessing the deck plate.

Y53-6110-1A1 (01/21) 19

WARNING

mating side is on the cab or quarter fenders.

When stepping onto a surface to enter

cab or access the deck plate, only

the use the steps and grab handles installed and designed for that purpose. Failure to use the proper steps and grab handles could cause a fall which may result in death or personal injury.

WARNING

Before opening or closing the hood,

sure your footing is secure and

make stable. Failure to do so may cause the hood to open or close uncontrollably which may result in death or personal injury.

NOTE

Any alteration (adding bulkheads, headache hind the cab that affects the utilization of installed grab handles, deck plates, or frame access steps should comply with Federal Motor Carrier Safety Regulation 399.

racks, tool boxes, etc.) be-

How to open the hood

Access the engine by opening the hood. The hood is typically held in the closed position by a latch system. The latches are typically mounted on the hood and the

20 Y53-6110-1A1 (01/21)

CAUTION

A hood not latched securely could

during operation and cause vehi-

open cle damage. Be sure to latch the hood securely.

WARNING

A pivoting hood could hurt someone or be

damaged itself. Before opening or closing the hood, be sure there are no people or objects in the way. Failure to stand in a position of safety can cause death or personal injury.

1. Release the latches

2. Put one or both hands on the top of the hood front. T forward by pulling at the top of the hood keeping your feet on the ground for stability. Keep pulling on the hood until you are certain that the hood hold open device is engaged.

ilt the hood

Close the Hood

The hood hold-open device will only be engaged if the vehicle hood is fully open. Once it is fully open, the latch will automatically engage and will need to be disengaged by the operator lever for the hood hold-open device is located near the front hinge of the hood.

. The release

Y53-6110-1A1 (01/21) 21

Pull the lever out to disengage the hood hold-open device.

When closing the hood, be sure that you maintain the same point of contact (top of hood) to control the movement of the hood as it closes. Gently lower the hood into place to avoid damage to the hood or cab.

WARNING

DO NOT let go of the hood while it

Close the hood in a controlled

closes. manner which requires hands firmly grasping the hood and feet on a stable, non-slip, surface. Failure to control the hood as it closes may result in death or personal injury

WARNING

Always ensure the hood hold open latch

is engaged to keep the hood fully open any time anyone gets under the hood for any reason. Failure to do so may cause the hood to close uncontrollably which may result in death or personal injury.

WARNING

Before closing the hood, be sure the

is clear—no people or objects are

area in the way. Failure to do so may result in death or personal injury.

Under Hood Air Intake?

The option for under hood intake is a switch on the dash that allows the operator to use air from under the hood in the event the air filter housing's inlet is blocked by snow or ice.

WARNING

DO NOT open the under hood air door

hands. This door is held closed

with with a spring which may pull the door closed unexpectedly. Failure to comply may result in personal injury.

CAUTION

Only operate the under hood intake air switch

when outside temperatures are below 32°F (0°C). Engaging the under hood air intake while temperatures are above freezing may result in engine damage.

The switch is directly wired to a solenoid on the air filter housing. This air solenoid (normally closed) will engage when signaled which will supply air to a piston. This air pressure will overcome a spring

22 Y53-6110-1A1 (01/21)

which holds a door closed inside the air filter housing. Fully engaged, the door will open and air will enter from under the hood instead of the opening on the side of the hood.

Seat

This seat has up to ten different controls that maximize the driver's comfort. Lumbar (and bolster support if available) are provided for superior support to the back during operation. Lower support is standard and the optional functions include upper lumbar and bolster functions. Pressing on the “+” symbol of the button will add support in the area. Pressing the opposite side of the button will release pressure and will reduce support in the area.

The seats in this vehicle are equipped with a switch that locks out the fore-aft isolator function in the seat. When locked, the seat will not move back and forth. It will be rigidly fixed and only allowed to move up and down with the vehicle’ This vehicle may be equipped with a swivel function on the passenger seat. This function allows the passenger seat to rotate and face towards the inside of the cab.

s movements.

WARNING

Always ensure that the passenger seat

locked into the forward facing posi-

is tion when the vehicle is in motion. Locking the swivel seat into the forward facing position maximizes visibility to the surrounding area. Failure to comply creates a safety hazard that may result in death or personal injury.

WARNING

DO NOT use the swivel function while a

passenger is in the seat and the vehicle is in motion. The seat belt will not provide proper protection if the passenger is not facing forward and the vehicle is in an accident. Failure to comply may result in death or personal injury.

Y53-6110-1A1 (01/21) 23

CAUTION

WARNING

DO NOT use the seat heater for more

10 minutes at a time. Always turn

than off the seat heaters when they are not needed. Overuse of the seat heater may decrease the capacity of the vehi-

1. Lower and Upper Lumbar Adjustment

Bolster Adjustment (option)

1. Seat heater/cooler Seat thigh support up/down

3. Seat bottom angle adjustment

24 Y53-6110-1A1 (01/21)

cle’s batteries and may result in poor starting and potential equipment damage.

WARNING

This seat may be equipped with a seat heater or ventilation system. There is a possibility heat-induced burns or excessive cooling when using the system. DO NOT use either of these systems if you have a diminished ability to sense temperature, a reduced ability to feel pain, or have sensitive skin.

that some people may suffer

When using the seat heater or ventila-

system, DO NOT place anything

tion on the seat that insulates against heat or cooling, such as a blanket, cushion, or similar item. This may cause the seat heater or ventilation system to overheat, which may cause a heat-induced burn or may damage the seat.

1. Seat fore/aft

Express down

3. Suspension stiffness

4. Seat height Lumbar and Bolster (Bolster is an

5. optional feature)

6. Recline

7. Armrest angle

Locking the swivel seat into the for-

facing position maximizes visibili-

ward ty to the surrounding area. Failure to comply creates a safety hazard that may result in death or personal injury.

driving off, always check to ensure that

seat is firmly latched in position.

the Failure to comply may result in personal injury, death, equipment or property damage.

WARNING

DO NOT drive or ride with your seat

in the reclined position. You

back could be injured by sliding under the seat belts in a collision. Failure to comply may result in personal injury or death.

Passenger Seat Swivel (Option)

This vehicle may be equipped with a swivel function on the passenger seat. This function allows the passenger seat to rotate and face towards the inside of the cab.

How to adjust a seat

WARNING

Always ensure that the passenger seat is

locked into the forward facing posi-

tion when the vehicle is in motion.

Y53-6110-1A1 (01/21) 25

WARNING

DO NOT use the swivel function while

passenger is in the seat and the ve-

a hicle is in motion. The seat belt will not provide proper protection if the passenger is not facing forward and the vehicle is in an accident. Failure to comply may result in death or personal injury.

WARNING

DO NOT adjust the driver's seat while the

vehicle is moving. The seat could move suddenly and unexpectedly and can cause the driver to lose control of the vehicle. Make all adjustments to the seat while the vehicle is stopped. After adjusting the seat and before

WARNING

Before driving or riding in a vehicle,

that there is adequate head

ensure clearance at maximum upward travel of seat. Injury may occur if head clearance is not adequate. Failure to comply may result in personal injury or death.

1. Set the seat's fore/aft position via the bar located below the seat cushion. This is a mechanical latch that does not involve any electric or air operated devices to control adjustment.

Set the seat height via the large

2. switch on the left side of the seat cushion. This switch is located in the center of the seat pad and uses air to adjust the seat height.

3. Adjust the thigh support by toggling the switch located immediately

under the seat bottom cushion and above the fore/aft position adjustment lever

4. Adjust the seat bottom angle using the switch next to the thigh support.

5. Adjust the seat back recline angle using the large lever situated near the seat belt buckle.

6. Adjust the lumbar support by using the switch bank located on the side the seat cushion between the up/ down adjustment switch and the seat recline adjustment lever.

7. Adjust the steering wheel.

8. Adjust the cab side mirrors.

Safety Restraint Belts

Safety belts have proven to be the single most effective means available for reducing the potential for either death or personal injury in motor vehicle accidents. The combination lap/shoulder belt is equipped with a locking mechanism. The system adjusts automatically to a person's size and movements as long as the pull on the belt is slow. Hard braking or a collision locks the belt. The belt will also lock when driving up or down a steep hill or in a sharp curve.

Unbelted riders could be thrown into the windshield or other parts of the cab or could be thrown out of the cab. They could strike another person. Injuries can be much worse when riders are unbelted. Always observe user warnings pertaining to safety belts. Your vehicle is equipped with a seat belt indicator lamp located on the dash.

WARNING

DO NOT drive vehicle without your

belt and your passengers' belts

seat fastened. Riding without a safety belt properly fastened can lead to injury or death in an emergency.

WARNING

DO NOT use the swivel function while a

Correct Use of Restraint

Correct Placement of Lap Belt

Correct Placement of Shoulder Belt

26 Y53-6110-1A1 (01/21)

Incorrect Use of Restraint

Lap Belt T

Shoulder Belt Incorrectly Under the Arm

oo High on the Hip

Safety Restraint Belt Twisted

During Pregnancy

Pregnant women should always wear combination lap/shoulder belts. The lap belt portion must be worn snugly and as low as possible across the pelvis. T pressure on the abdomen, the belt must never pass over the waist. A properly worn seat belt may significantly reduce the risks to woman and baby in the event of a crash.

o avoid

Safety Restraint Tips

•

DO NOT wear a belt over rigid or breakable objects in or on your clothing, such as eye glasses, pens, keys, etc., as these may cause injury in an accident.

• Any authorized person sleeping in your vehicle while it is moving should use the bunk restraint.

• Any authorized person sitting in the sleeper area on the sofa bed (if equipped) while it is moving should wear a seat belt.

• A responsible operator sees to it that everyone in the vehicle rides or sleeps safely. The operator is responsible to inform any passengers or co-drivers how to

Y53-6110-1A1 (01/21) 27

properly use the seat belts and bunk restraint in the vehicle.

DO NOT strap in more than one

• person with each belt.

• Keep seat belt and bunk restraint buckles free of any obstruction that may prevent secure locking.

• Damaged or worn belts in the cab or sleeper subjected to excessive stretch forces from normal wear, must be replaced. They may not protect you if you are in an accident.

• Any belts or restraints that have been subjected to an accident should be inspected for any loose (attaching) hardware or damaged buckles.

• If belts show damage to any part of assembly, such as webbing, bindings, buckles or retractors, they must be replaced.

• DO NOT allow safety belts (seat or bunk) to become damaged by getting caught in door, bunk, or seat hardware, or rubbing against sharp objects.

• All belts must be kept clean or the retractors may not work properly.

• Never bleach or dye seat or bunk restraint belts: chemicals can weaken them. Do, however, keep them clean by following the care label on the belts. Let them dry completely before allowing them to retract or be stowed away.

• Make sure the seat belts and bunk restraint of the unoccupied passenger seat or bunk is fully wound up on its retractor or is stowed, so that the belt or restraint tongue is in its properly stowed position. This reduces the possibility of the tongue becoming a striking object in case of a sudden stop.

• DO NOT modify or disassemble the seat belts or bunk restraint in your vehicle. They will not be available to keep you and your passengers safe.

• If any seat belt or bunk restraint is not working properly, see an authorized dealer for repair or replacement.

How to Use Lap/Shoulder Belt

Follow these steps to fasten your seat belt and be sure anyone riding with you does the same.

WARNING

Proper seat belt adjustment and use is important ty. Failure to wear or adjust the safety belt properly may result in death or personal injury.

To fasten the belt:

2. Pull belt in a continuous slow

3. Insert belt tongue into buckle on

4. Push down until the tongue is

5. Pull belt to check for proper

to maximize occupant safe-

Grasp the belt tongue.

motion across your chest and lap.

inboard side of seat.

securely locked with an audible click.

fastening and adjustment.

a. Pull shoulder section to make

sure belt fits snugly across the chest and pelvis.

28 Y53-6110-1A1 (01/21)

b. There should be less than one

inch (25 mm) gap between the body and the belt.

The shoulder belt must be

positioned over the shoulder, it must never rest against the neck or be worn under the arm.

d. Make sure any slack is wound

up on the retractor and that the belt is not twisted.

If the belt is locked, lean the body back to remove any tension in the belt. After releasing the belt, allow the belt to retract completely by guiding the belt tongue until the belt comes to a stop. To unfasten the belt, push the release button on the buckle and the belt should spring out of the buckle. The seat belt indicator will turn off once the driver's seat

belt is fastened.

Tether Belts

Make sure that the tether belt is attached to the cab floor and seat frame. It should be routed through the buckle on each side. Often the attachments are made using a split-type hook. Make sure both halves of the hook are around the anchor bracket.

WARNING

DO NOT remove, modify, or replace

tether belt system with a different

the tether system. A failed or missing tether belt could allow the seat base to fully extend in the event of an accident. Failure to comply may result in death or personal injury.

WARNING

Failure to adjust external tether belts properly ment of the seat in an accident. Tether belts should be adjusted so that they are taut when the seat is in its most upward and forward position. Failure to comply may result in death or personal injury.

Adjust an external tether by either lengthening or shortening the strap. T lengthen it:

1. Turn the buckle to a right angle to

2. Then pull the buckle.

can cause excessive move-

the webbing.

Y53-6110-1A1 (01/21) 29

3. To shorten the tether, pull on the strap.

Komfort Latch Feature

WARNING

DO NOT set the Komfort Latch with too

much slack. Too much slack may reduce the effectiveness of the seat belt. Failure to comply may result in death or personal injury.

To eliminate cinching, simply activate the Komfort Latch device located on the seat belt webbing at the appropriate time:

Adjust the seat to its proper driving position.

2. Latch the seat belt.

If available, adjust the seat belt height adjuster to a comfortable driving position.

4. While seated appropriately, push the "on" button to engage the Komfort Latch.

5. Learn forward in the seat until you hear a "click."

6. Return to normal driving position, and the Komfort Latch maintains the preset amount of tension relief.

More information and video tutorials can be found at: http://www.clicktugsnug.com/ To disengage the mechanism unbuckle the seat belt and then press the OFF button of the Komfort Latch or tug on the shoulder strap.

Belt Damage and Repair

Damaged belts in the cab must be replaced. Belts that have been stretched, cut, or worn out may not protect you in an accident. If any seat belt is not working properly an Authorized Service Center for repair or replacement. For further information on seat belts and seat belt maintenance, see Safety

Restraint System - Inspection on page 249.

, see

Sleeper Bunks and Restraints

This vehicle comes equipped with a bunk restraint for the primary lower bunk and the optional upper bunk. These restraints should be used whenever the bunks are occupied by a person while the vehicle is in motion. The sleeper bunk restraint is intended to reduce the risk of being thrown from the bunk in a crash. This device is not designed to hold the occupant in a fixed position on the bunk and may not prevent all injuries in the event of a crash.

30 Y53-6110-1A1 (01/21)

WARNING

Lower Bunk Sleep Restraints

WARNING

Be sure the restraint system is used

anyone is occupying the sleeper

when while the vehicle is moving. In an accident, an unrestrained person lying in a sleeper bunk could be seriously injured. He or she could be thrown from the bunk. Failure to comply may result in death, personal injury, equipment or property damage.

Lower Bunk

WARNING

Always keep the lower bunk in its horizontal,

latched, position while the vehicle is moving. If left open, stored items could become loose during an accident and strike you, causing death or personal injury.

Before you move the vehicle, check to be sure the lower bunk is in the down position.

Y53-6110-1A1 (01/21) 31

Upper Bunk

WARNING

Be sure the latch that holds the upper

in the folded position is working

bunk properly so the bunk will not fall down. Pull on the bunk to be sure it is latched securely. If the bunk falls, you could be injured. Failure to comply may result in death, personal injury, equipment or property damage.

Any loose items on the upper or lower

should be moved to a secured

bunk place before driving the vehicle. Failure to comply may result in death, personal injury, equipment or property damage.

Per FMCSR 392.60 - Unauthorized Persons Not to be T law prohibits the transportation of persons in commercial vehicles unless they are specifically authorized in writing by the motor carrier. See the cited FMCSR for a

ransported. Federal

complete description of the regulation and exemptions.

Upper Bunk Sleep Restraints

Upper Rear Sleeper Storage

Your vehicle may be equipped with an upper storage shelf that extends over the lower bunk and across the rear of the sleeper. The following warning applies:

WARNING

Overhead compartments are not intended

for personnel use or for items exceeding their designed weight limits. Exceeding the weight limits may cause the shelf to collapse and/or items may

fall out in a sudden stop which may lead to death or personal injury

Compartments in the cab and sleeper are provided for storage of necessary items used during operation. The storage areas above the door are designed to hold a combined total not exceeding 14 lbs (6 kg) per compartment and the other overhead compartments (including those in the optional sleeper) should hold a combined total not exceeding 5 lbs (2.2 kg) per compartment.

What to do before starting the vehicle

ehicle Operation

Safe V

Be sure to perform pre-trip inspections before starting and operating the vehicle. For your safety, as well as those around you, be a responsible driver:

• If you drink alcohol, do not drive.

• Do not drive if you are tired, ill, or under emotional stress.

Safe driving is only possible with the proper concentration on the driving task. Keep distraction to a minimum to improve your concentration. Examples of

distractions may include radio controls, GPS navigation controls, cellular telephone calls, cellular text messages, reading or reaching for something on the floor. Minimizing your distractions will improve safe driving and will help avoid an accident involving death or personal injury. Be aware of local regulations that may prohibit the use of cellular telephones while driving. In addition to being an unsafe practice, it may be against local or federal ordinances to use cellular devices while operating the vehicle. Much has gone into the manufacturing of your vehicle including advanced engineering techniques, rigid quality control, and demanding inspections. These manufacturing processes will be enhanced by you, the safe driver, who observes the following:

• Knows and understands how to operate the vehicle and all its controls

• Maintains the vehicle properly

• Uses driving skills wisely.

This manual is not a training manual. It cannot tell you everything you need to know about driving your vehicle. For that you need a good training program or truck driving school. If you have not been trained, get the proper training before you

32 Y53-6110-1A1 (01/21)

drive. Only qualified drivers should drive this vehicle. For more information, refer to Department

ransportation Regulation 392.7, which

of T states that interstate commercial motor vehicles are not to be driven unless the driver is sure that certain parts and accessories are in working order. Do not drink alcohol and drive. Your reflexes, perceptions, and judgment can be affected by even a small amount of alcohol. You could have a serious or even fatal accident, if you drive after drinking. DO NOT drink and drive or ride with a driver who has been drinking.

WARNING

The use of alcohol, drugs, and certain medications can impair perception, reactions, and driving ability. These circumstances can substantially increase the risk of an accident. Failure to comply may result in property damage, personal injury, or death.

WARNING

DO NOT text and drive. Your reaction

perceptions, and judgment can

time, be affected while texting or using any other form of mobile messaging while driving. Failure to comply may result in death, personal injury, equipment or property damage.

Emergency Equipment

It is good practice to carry an emergency equipment kit in your vehicle. One day, if you have a roadside emergency, you will be glad the following items are with you:

• Window scraper

• Snow brush

• Container or bag of sand or salt

• Emergency light

• Warning triangles

• Small shovel

• First aid kit

• Fire extinguisher

• Vehicle recovery hitches.

Drivers Checklist

o keep your vehicle in top shape and

T maintain a high level of safety for you, your passengers, and your load, make a thorough inspection every day before you drive. You will save maintenance time later, and the safety checks could help prevent a serious accident. Please remember, too, that Federal Motor Carrier Safety Regulation 392.7 requires a pre-trip inspection and so do commercial trucking companies. You are not expected to become a professional mechanic. The purpose of your inspections is to find anything that might interfere with the safe and efficient transportation of yourself, any passengers, and your load. If you do find something wrong and cannot fix it yourself, have an authorized dealer or qualified mechanic repair your vehicle right away. The following operations are to be performed by the driver. Performing these checks and following the maintenance procedures in this manual will help keep your vehicle running properly.

Y53-6110-1A1 (01/21) 33

1 - Axle Weight

2 - Payload Distribution

3 - MAXIMUM LOAD RATING

7,880 (3,574) 4,120 (1,869)

12,000

(5,443)

Lbs (Kg)

7,540 (3,420)

24,348 (11,061)

31,925 (14,481)

Lbs (Kg)

(1)

(3)

(2)

components installed from the factory on to

Vehicle Loading

the vehicle and their designed specifications. (Axle weight ratings are listed on the driver's door edge.)

WARNING

DO NOT exceed the specified load rat-

Overloading can result in loss of

ing. vehicle control, either by causing component failures or by affecting vehicle handling. Exceeding load ratings can also shorten the service life of the vehicle. Failure to comply may result in death or personal injury.

WARNING

An unevenly distributed load or excessive

load over one axle can adversely

affect the braking and handling of your

GVWR Gross Vehicle Weight Rating. This is

GCW Gross Combination Weight (GCW).

GAWR Gross Axle Weight Rating. This is the

Load Distribution

the MAXIMUM WEIGHT your vehicle is allowed to carry weight of the empty vehicle, loading platform, occupants, fuel, and any load. Never exceed the GVWR of your vehicle.

This is the actual combined weight of your vehicle and its load: vehicle, plus trailer(s), plus cargo.

total weight that one axle is designed to transmit to the ground. You will find this number listed on the driver's door edge.

Be sure any load you carry is distributed so that no axle has to support more than its GAWR.

, including the

1. Axle Weight

Payload Distribution

3. Maximum Load Rating

Be sure that the load on the vehicle is distributed evenly across each axle so that no axle has to support more than its rated GAWR. In total, the vehicle and its load should not exceed the GAWR for each axle

and must not exceed the GCW. vehicle, which could result in an accident. Even if your load is under the legal limits, be sure it is distributed evenly. Failure to comply may result in death, personal injury, equipment or

Visual inspection while

approaching the vehicle

property damage.

While approaching the vehicle, inspect the

The Gross Vehicle Weight Rating (GVWR) or the maximum front and rear Gross Axle W

eight Ratings are determined by the

34 Y53-6110-1A1 (01/21)

general appearance of the vehicle and its

surroundings for any signs of needed

attention.

NOTE

If equipped with a three-piece roof fairing,

DO NOT DRIVE WITH ROOF FAIRING FOLDED DOWN, since the marker lamps will not be effective in that position.

Perform these basic inspection steps before operating the vehicle.

Check the overall appearance and

condition. Are windows, mirrors,

and lights clean and unobstructed?

2. Is the air-intake opening clear of obstructions?

3. Check beneath the vehicle. Are there signs of fuel, oil, or water leaks?

4. Check for damaged, loose, or missing parts. Are there parts showing signs of excessive wear or lack of lubrication? Have a qualified mechanic examine any questionable items and repair them without delay.

5. Check your load. Is it secured properly?

Daily Checks

NOTE

These checks are in addition to, not in place

of, Federal Motor Carrier Safety Regulations. These regulations may be purchased by writing to: Superintendent of Documents U.S. Government Printing Office Bookstore 710 N. Capitol St. N.W. Washington, DC 20402, or ContactCenter@gpo.gov.

Engine

•

Engine oil

• Engine coolant

• Power steering fluid

• Engine belt

• Fuel filter (water separator) Fuel

System on page 274

• Windshield washer fluid

• Battery cables - check the condition of the battery and alternator cables for signs of chafing or rubbing. Make sure that all clamps (straps) holding the

cables are present and in good working order

• Hood latch

• Brake lines and hoses

• Steering components - check pitman arm, drag link, tie rod, steering shaft and power steering hoses, etc., for loose, broken, or missing parts.

• Hydraulic clutch fluid

Chassis and Cab Exterior

• Lamps - are any exterior lamps cracked or damaged? Perform an exterior lamp test. See Exterior

Lighting Self-Test on page 107 for

more information.

• Is the air-intake opening clear of obstructions?

• Window and mirrors - clean and adjusted?

• Tires, wheels and hubs Tires on page 292 Wheels on page 295 and

Systems Check on page 37

• Suspension components - check for loose or missing fasteners. Check damage to springs or other suspension parts such as cracks, gouges, distortions, bulges or chafing.

Y53-6110-1A1 (01/21) 35

• Brake lines and hoses - check lines, linkages, chambers, parking and service brake operation.

Air system - Air System on page

• 234

• Steps and grab handles

• Frame mounted tanks (fuel, diesel exhaust fluid, etc) - check underneath the vehicle for signs of fluid leaks. If any are found, correct before operating the vehicle. Is the tank fill cap secure? Are the tank straps tight? Is the strap webbing in place?

• Trailer connections - are they secure and the lines clear? If they are not being used, are they stored properly? Is the trailer spare wheel secure and inflated? Is the landing gear up and the handle secured?

• Fifth wheel - Is the kingpin or the sliding fifth wheel locked?

Cab Interior

• Seat - adjust the seat for easy reach of controls and visibility.

• Seat belts - fasten and adjust safety restraint belts (which may include restraints in the sleeper).

• Steering column - adjust for easy reach and visibility.

• Mirrors - check and readjust mirrors if necessary.

• Lamps - turn ignition key to the ON position to allow the bulb check and the systems check to test the truck systems. Perform an Exterior Light Self-Test

• Instruments - check all instruments (see Systems Check on page 37)

• Windshield - check operation of windshield wipers and washers.

• Horn - check operation of horn.

• Fuel - check vehicle's fuel level. Is there enough fuel?

• Diesel exhaust fluid - check level. Is there enough fluid?

• Air conditioning filters in the cab and/or sleeper - check the condition of the sleeper air conditioning air filter. Keep the sleeper floor area behind the passenger front seat clear of debris and pet hair. The sleeper air conditioner draws air from this area and excessive dirt or pet hair may shorten the service life of the sleeper air conditioning air filter.

Weekly Checks

NOTE

These checks are in addition to, not in place

Engine

•

Belts

• Hoses

• Clamps

• Radiator

• Air filter and its housing

• Engine Aftertreatment system components

• Exhaust pipes

• Engine air pre-cleaner (option) For vocational vehicles with optional engine air pre-cleaner, check the purge valve at the bottom of the hood mounted

36 Y53-6110-1A1 (01/21)

engine air pre-cleaner for any

105

105 105 105

105

105 105 105

105105

105 105

105

114

obstructions. Make sure the purge valve will open and close as needed to purge dirt and water from the engine intake air

• Automatic transmission fluid (where applicable) - Check level, after the engine has warmed up to operating temperature.

Chassis and Cab Exterior

• Battery - check battery and terminals.

• Hood supports and guides are properly lubricated.

• Wheel cap nuts - are they all in place and torqued properly tighten if necessary. Wheels on page 295

• Controls and wiring - check for condition and adjustment

• PACCAR 20k Front Axle Kingpin Joint Grease/Tie Rod Ends (option) (VOCATIONAL USE) - For vocational vehicles with this axle, grease with Heavy-Duty Multipurpose Lithium Based: #1 or #2 grade, every 50 hours. (Refer to

Front Axle and Suspension on

page 275 for maintenance instructions.)

Systems Check

System Check Display

Systems Check evaluates each monitored system and displays its progress for the

. The Systems Check will appear

operator when the Exterior Lighting Self-Test (ELST) is activated, or when viewing the Notifications sub-menu. Systems Check can be interrupted at any time by

• Pressing Select

• Switching the ELST switch to OFF

• Turning the ignition key to OFF or ACC

• Releasing the Parking Brake.

The Systems Check can also present the following optional features.

Tire Pressure Monitoring System (TPMS) (option)

One of the systems the vehicle monitors is the Tire Pressure Monitoring System (TPMS).

• Steering components - check pitman arm, drag link, intermediate shaft U-joint pinch bolt, tie rod, steering shaft and power steering hoses, etc., for loose, broken, or missing parts.

• Cab air conditioner fresh air filter check for condition and cleanliness.

Y53-6110-1A1 (01/21) 37

84 96

105

105 105

105

105 105 105

105

105 105 105

105

TPMS shows individual tire pressures for each location and will change the color of the tire:

Outlined – Tire pressure not

• available

• Gray – Nominal

• Amber – High or low pressure

• Red – Very low or high pressure, or high temperature

To read about tires and recommended maintenance practices, see Tires on page

292.

System Check Display with TPMS

shown, as well as general driving tips that can improve brake saving and fuel economy (see Driver Rewards).

Driver Performance Assistant (DP (option)

If enabled, The Driver Performance Assistant score for Braking Habits is shown, as well as general driving tips that can improve brake saving and fuel economy (see DPA ).

Once the Systems Check has completed, the results will display in a summary

. A detailed explanation of this summary can be viewed by accessing the Menu after a Systems Check has completed.

Driver Rewards (option)

If enabled, the Driver Rewards score for Fuel Economy, Engine Idle Time, or both Fuel Economy and Engine Idle Time are

38 Y53-6110-1A1 (01/21)

Y53-6110-1A1 (01/21) 39

Chapter 2 | EMERGENCY

Roadside Assistance

Low Air Alarm .....................................................................................................................................41

Stop Engine Light................................................................................................................................42

Low Oil Pressure.................................................................................................................................42

Engine is Overheating.........................................................................................................................42

How to Inspect and Replace a Fuse................................................................................................... 44

Where are the Fuses Located?...........................................................................................................46

How to Jump Start a Battery............................................................................................................... 46

How to Recover a Vehicle...................................................................................................................48

...........................................................................................................................41

40 Y53-6110-1A1 (01/21)

Roadside Assistance

Call toll-free to talk to someone at the PACCAR Customer Center.

1-800-4Peterbilt (800-473-8372

The Customer Call Center is open 24/7-365 days a year and staffed with trained personnel (English and other languages if necessary), free of charge, to provide total roadside assistance. Their custom mapping system can locate the nearest Authorized dealers and Independent Service Providers (ISPs) based on the vehicle's location. In addition, the customer center can dispatch services for jump and pull starts, tires, trailers, fines and permits, chains, towing, hazardous clean-up, out of fuel (roadside), mechanical repairs, and preventive maintenance services. If they can’t answer a specific question, they will direct you to a representative who can.

Low Air Alarm

If this alarm turns on while parked or driving, be sure to perform these tasks:

WARNING

If the air pressure falls below 60 psi

kPa) the spring brakes may stop

(414 the vehicle abruptly, which could cause an accident resulting in personal injury or death. Observe the gauges. If the warning alert comes on, do not continue to drive the vehicle until it has been properly repaired or serviced.

NOTE

The instrument cluster gauges may appear

, if hidden from view, change brightness and change color to bring attention to a particular system.

1. Slow down carefully.

Move a safe distance off the road and stop.

3. Place the transmission in neutral (park with automatic transmissions, if equipped) and set the parking brake.

4. Turn OFF the engine.

5. Turn ON the emergency flasher and use other warning devices to alert other motorists.

If the light and alarm do not turn off at startup, DO NOT try to drive the vehicle until the problem is found and fixed.

Y53-6110-1A1 (01/21)

Stop Engine Light

This warning light illuminates when the engine has a serious problem. This is an emergency and the vehicle should be safely stopped at the soonest opportunity

WARNING

This should be considered an emer-

. You should stop the vehicle as

gency safely as possible and turn OFF the ignition. The vehicle must be serviced and the problem corrected before driving again. Failure to do so may cause severe engine or Diesel Particulate Filter damage, or cause an accident which may result in death or personal injury.

Low Oil Pressure

CAUTION

Continuing to operate your vehicle with

ficient oil pressure will cause seri-

insuf ous engine damage. Failure to comply may result in equipment or property damage.

It is important to maintain oil pressure

within acceptable limits. If oil pressure drops below the minimum psi (kPa) the oil pressure gauge will illuminate and change color

. Additionally, the Stop Engine Lamp

will turn red.

NOTE

The instrument cluster gauges may appear, if hidden from view, change brightness and change color to bring attention to a particular system.

1. Slow down carefully.

2. Move a safe distance off the road and stop.

Place the transmission in neutral

3. (park with automatic transmissions, if equipped) and set the parking brake.

4. Turn OFF the engine.

5. Turn ON the emergency flasher and use other warning devices to alert other motorists.

6. Wait a few minutes to allow oil to drain into the engine oil pan, and then check the oil level.

7. Add oil if necessary. If the problem persists, contact an authorized dealer as soon as possible.

Engine is Overheating

42 Y53-6110-1A1 (01/21)

CAUTION

The cooling system may overheat if

engine coolant is at the minimum

the level. A sudden loss of coolant, caused by a split hose or broken hose clamp could also lead to an overheat condition. Always inspect to ensure hoses and clamps are not cracked, worn, or loose. Failure to comply may result in equipment or property damage.

NOTE

engine may be overheating, DO NOT TURN OFF THE ENGINE unless a low water warning device indicates a loss of coolant. Follow these steps if the engine coolant temperature is rising, or the temperature is already above normal, and there are no other warning alarms displayed in the instrument cluster

NOTE

The instrument cluster gauges may appear

, if hidden from view, change brightness and change color to bring attention to a particular system.

idling without an alert driver present. If

engine does overheat, as indicated

the by the engine coolant temperature lamp, immediate action is required to correct the condition. Continued unattended operation of the engine, even for a short time, may result in serious engine damage or a fire. Failure to comply may result in death, personal injury, equipment or property damage.

The system may also temporarily over-

during severe operating condi-

heat tions such as:

• Climbing a hill on a hot day

• Stopping after high-speed/highload driving

• Debris blocking air flow through the cooling module (radiator)

If the engine coolant temperature warning lamp comes on and the audible alarm sounds showing an overheat condition, or if you have any other reason to suspect the

Y53-6110-1A1 (01/21)

1. Reduce engine speed, or stop. When stopped, place the transmission in neutral (N) and set the parking brake. Keep the engine running.

WARNING

To reduce the chance of personal in-

, vehicle damage, and/or death

jury from overheated engines, which can result in a fire, never leave the engine

WARNING

Removing the fill cap on a hot engine

cause scalding coolant to spray

NOTE

Keep the engine running at idle speed

a warning icon turns on that re-

unless quires the engine to be shut off.

2. Check to ensure the Oil Pressure Gauge reads normal.

3. Make sure the engine fan is turning by switching the Engine Fan Switch from AUT (Manual).

4. Idle the engine to see if this reduces the coolant temperature. If the temperature does not begin to drop, shut off the engine and contact your nearest authorized dealer.

5. If the temperature begins to return to normal, allow the engine to idle 3 to 5 minutes before shutting it off. This allows the engine to cool gradually and uniformly.

6. If overheating came from severe operating conditions, the temperature should have cooled by this time. If it has not, stop the engine and let it cool before checking to see if the coolant is low.

7. Be sure the vehicle is parked on level ground or the readings may be incorrect. Check the coolant level at the coolant surge tank.

Check the coolant level after each trip when the engine has cooled. The coolant level should be visible within the surge tank. Add coolant if necessary.

O to MAN

How to Inspect and Replace a Fuse

urn the ignition off and turn all lights off. Locate the fuses in either the cab, sleeper, or main power fuse box. All the electrical circuits have fuses to protect them from a short circuit or overload. If something electrical on your chassis stops working, the first thing you should check for is a blown fuse.

WARNING

DO NOT replace a fuse with a fuse of a higher rating. Doing so may damage the electrical system and cause a fire. Failure to comply may result in death, personal injury, equipment or property damage.

CAUTION

Never patch fuses with aluminum foil or

wire. This may cause serious damage elsewhere in the electrical circuit, and it may cause a fire.

44 Y53-6110-1A1 (01/21)

CAUTION

If a circuit keeps blowing fuses, have

electrical system inspected for a

the short circuit or overload by an authorized dealer as soon as possible. Failure to do so could cause serious damage to the electrical system and/or vehicle.

CAUTION

Before replacing a fuse, turn OFF all lights

and accessories and remove the ignition key to avoid damaging the electrical system.

1. Turn off all lights and accessories and remove the ignition key to avoid damaging the electrical system.

Determine from the chart on the fuse panel which fuse controls that component.

• If the circuit has a fuse, remove that fuse and see if it is blown.

• If the circuit has a polyswitch, have your electrical system

inspected by an authorized dealer

Blown Fuse

1. Separation (Blown)

3. If it is blown, replace it with a fuse of the same rating. If a fuse of the same rating is not available, a fuse of a lower rating may be temporarily substituted. You can also use a fuse from a circuit you can do temporarily without (for example an accessory circuit or radio).

CAUTION

When replacing a failed polyswitch

breaker), always use an ap-

(circuit proved polyswitch (circuit breaker) with a current rating equal to or less than the polyswitch (circuit breaker) being replaced. Only use the approved Type II modified reset polyswitch (circuit breaker). NEVER use a Type I (automatic reset) or Type III (manual reset) polyswitch (circuit breaker). A fuse with a current rating equal to or less than the polyswitch (circuit breaker) being replaced can also be used.

CAUTION

Always close and latch the engine compartment ed cover ensures a water tight seal which can prevent damage to electrical components.

fuse box cover. A latch-

Y53-6110-1A1 (01/21) 45

Where are the Fuses Located?

Fuses for the cab are located in the fuse panel behind the drivers side kick panel. Main power relays are located on the power distribution center, in the engine compartment, mounted to the front wall of the cab. Fuses for the optional sleeper are located on a separate fuse box accessible through the luggage compartment door.

How to Jump Start a Battery

WARNING

Batteries contain acid that can burn and gases that can explode. Ignoring safety procedures may result in death, personal injury, equipment or property damage.

WARNING

Never jump start a battery near fire,

or electrical sparks. Batteries

flames, generate explosive gases that could explode. Keep sparks, flame, and lighted cigarettes away from batteries. Failure to comply may result in death, personal injury, equipment or property damage.

WARNING

When jump starting using a battery charger/booster charger/booster is set to the same jump start voltage and amperage specifications as the vehicle electrical system and batteries (i.e., if the vehicle electrical system is a 12 volt system, the jump start voltage on the battery charger/ booster shall be set at no higher than a 12 volt setting). Failure to comply may cause an explosion and/or fire resulting in death, personal injury, and/or equipment or property damage.

, verify that the battery

WARNING

Heed all warnings and instructions of

jumper cable manufacturer. Failure

the to comply may result in death, personal injury, equipment or property damage.

CAUTION

Applying a higher voltage booster battery

will cause expensive damage to sensitive electronic components, such as relays, and the radio. Failure to comply may result in equipment damage.

CAUTION

Improper hook-up of jumper cables or

following these procedures can

not damage the alternator or cause serious damage to both vehicles.

46 Y53-6110-1A1 (01/21)

CAUTION

Vehicles equipped with an Engine

Module (ESM) should not be

Start jumped using the ESM Starter terminal (S+). Failure to comply may result in arcing or battery damage.

1. Remove any jewelry that may come in contact with the battery terminals.

Select a jumper cable that is long

2. enough to attach to both vehicles in a way that ensures neither vehicle touches each other.

3. Position the two vehicles together, but do not allow them to touch.

4. Turn OFF all lights, heater, radio, and any other accessory on both vehicles.

5. Set the parking brake.

6. Shift the transmission into park position or neutral for manual transmissions.

7. If either vehicle is equipped with battery disconnects ensure they are in the OFF position prior to connecting the two vehicles.

8. Attach one end of a jumper cable to the positive (+) terminal of the discharged (dead) battery have a large red + or P on the battery case, post, or clamp.

. This will

NOTE

If your vehicle is equipped with an Engine

Start Module (ESM), attach the positive (+) cable to the vehicle battery and not the ESM Starter terminal (S+). See the Maxwell Installation Guide and User Manual for additional information about LED status conditions, maintenance, and troubleshooting.

9. Attach the other end of the same cable to the positive (+) terminal of the good (booster) battery

10. Attach the remaining jumper cable FIRST to the negative (-) terminal (black or N) of the good battery.

11. Attach the other end of the negative cable to the negative (-) terminal of the dead battery.

NOTE

Always connect positive (+) to positive (+) and negative (-) to negative (-).

12. If either vehicle is equipped with battery disconnects, ensure that they are in the ON position.

13.

Start the vehicle that has the good battery first.

• Let it run for 5 minutes, or

• If charging a system containing an Engine Start Module (ESM), let it run for 15 minutes. Briefly pressing the Push-to-Test button on the ESM will indicate the ESM's charge state. When the status LED presents a solid green light the ESM is sufficiently charged.

14. Start the vehicle that has the discharged (dead) battery.

The engine should start. If the engine fails to start, do not continue to crank the starter. Instead, contact the nearest authorized dealer.

Y53-6110-1A1 (01/21) 47

WARNING

the axle shafts in the axles will cause damage to the axle gears.

WARNING

When disconnecting jumper cables,

sure they do not get caught in

make any moving parts in the engine compartment. Failure to comply may result in death, personal injury, equipment or property damage.

Reverse the above procedure exactly when removing the jumper cables. With engine running, disconnect jumper cables from both vehicles in the exact reverse

, making sure to first remove the

order negative cable from the vehicle with the discharged battery.

How to Recover a Vehicle

CAUTION

Remove the drive axle shafts or lift the driving

wheels off the ground before towing the vehicle. Towing the vehicle with either the wheels on the ground or

48 Y53-6110-1A1 (01/21)

CAUTION

If your vehicle has a Meritor axle with

driver-controlled main differential

a lock, install the caging bolt before removing the axles for towing, see How to Manually Lock a Differential. Installing the caging bolt prevents damage by locking internal axle components in position.

CAUTION

Connect recovery rigging only to hitches

intended for that purpose. DO NOT attach to bumpers or brackets. Use only equipment designed for this purpose. Failure to comply may result in equipment damage.

Before towing a vehicle, test your air brakes to ensure that you have proper-

connected and inspected the recov-

ly ery vehicle’s brake system. Failure to do so could lead to a loss of vehicle control which may result in an accident involving death or personal injury.

All lubricating and clutch application oil pressure is provided by an engine-driven pump, which will not work when the engine is stopped. Y your vehicle by towing it with the driveline connected and the drive wheels on the ground. Worse, when vehicles are towed, either by wrecker or piggyback, the lubricant in the top front of the drive axle will drain to the rear. This will leave the top components dry. The resulting friction may damage them. Always remove the main drive axle shafts before towing your vehicle.

1. Review and understand all the

2. Disconnect the drive axle shafts

ou could seriously damage

cautions and warnings of this section.

and cover the open hubs. This is

necessary because if the transmission is driven by the driveshaft (rear wheels on the ground), no lubricant will reach the gears and bearings, causing damage to the transmission. .

See How to Prepare the Axles for T on page 52

3. Connect the towing chain or cable using best recovery practices .

See Best Practices for Recovery Rigging on page 55

4. Make sure the recovered vehicle's parking brakes are released. .

See Manually Release the Parking Brake on page 49

5. If you desire to use the recovered vehicle’s brakes, ensure that the vehicle’s air system is connected to that of the recovery vehicle. Ensure that any air line that has been removed from a driver-controlled main differential lock is firmly capped to prevent loss of air pressure from the recovery vehicle if it is supplying air pressure. If you don’t desire to use the recovered vehicle’s brakes, ensure that you cage the spring brakes before attempting to move the vehicle.

owing

See How to Manually Lock a Differential on page 53

6. Follow state/provincial and local laws that apply to vehicles in tow.

7. Do not tow vehicles at speeds in excess of 55 mph (90 km/h).

For additional information concerning heavy duty truck recovery, refer to the following Technology & Maintenance Council (TMC) literature.

• Recommended Practice #602–A — “Front Towing Devices For Trucks and Tractors”

• Recommended Practice #602–B — “Recovery Attachment Points For Trucks, Tractors, and Combination Vehicles"

• Recommended Practice #626 — “Heavy Duty Truck Towing Procedures”

Copies of these can be obtained from the following address: Technology & Maintenance Council 950 N. Glebe Road (703) 838-1763 Arlington, VA 22203 Email: tmc@trucking.org Website: http:// tmc.truckline.com

Manually Release the Parking Brake

There may be times when there is not enough air pressure, or the engine's air compressor is not able to produce enough pressure, to release the parking brakes. In such cases, the parking brakes (or Spring Brakes) can be manually released.

WARNING

DO NOT drive vehicle with malfunc-

brakes. If one of the brake cir-

tioning cuits becomes inoperative, braking distances will increase substantially and handling characteristics while braking will be affected. You could lose control of your vehicle or cause an accident. Have it towed to the nearest dealer or qualified repair facility for repair. Failure to comply may result in property damage, personal injury, or death.

Y53-6110-1A1 (01/21) 49

WARNING

DO NOT operate a vehicle when the

brakes have been manually re-

spring leased. Driving a vehicle after its spring brakes are manually released is extremely dangerous. The brakes may not function. Failure to comply may result in death, personal injury, equipment or property damage.

WARNING

chains, or other safe means to prevent

before manually releasing the

rolling spring brakes.

To move a vehicle immobilized by the spring brakes due to loss of air pressure in the brake system, perform the following procedure:

Remove the cap from the spring

1. chamber

3. Slide out the release stud.

DO NOT disassemble a spring brake chamber powerful spring that is compressed. Sudden release of this spring may result in death or personal injury.

. These chambers contain a

WARNING

Releasing the spring brakes on an unsecured dent. The vehicle could roll, which may result in death, personal injury, equipment or property damage. Always secure the vehicle with wheel chocks,

50 Y53-6110-1A1 (01/21)

vehicle could lead to an acci-

2. Remove the release stud assembly from the side pocket, and remove the release nut and washer from the release stud.

4. Insert the release stud through the opening in the spring chamber where the cap was removed. Insert it into the pressure plate. T release stud 1/4 turn clockwise in the pressure plate. This secures the cross pin into the cross pin area of the pressure plate and locks it into the manual release position.

urn the

5. Assemble the release stud washer and nut on the release stud.

torque the release stud assembly. (S-Cam-type maximum: 50 lb-ft (68

edge-type maximum: 30

N·m), W lb-ft (41 N·m)). The spring brake is now mechanically released.

designed to be used as towing devices for long distance. Specially designed hitches are required to recover your vehicle. The recovery hitches attach to the frame. T made up of the following parts, are recommended for the proper recovery of your vehicle:

wo hitch assemblies,

Recovery Hitch

6. With a wrench, turn the release stud assembly nut until the compression spring is 90-95 percent caged. While doing this, check to make sure the push rod (adapter push rod or service push rod) is retracting. DO NOT over-

Y53-6110-1A1 (01/21) 51

A removable recovery hitch is a device that attaches to the sockets in the front bumper in the event that the vehicle needs to be recovered. These hitches are designed for short distance and intermittent duty to help pull a vehicle. These hitches are not

If your vehicle is not equipped with the proper recovery hitch assembly authorized dealer to obtain the proper equipment.

, contact an

WARNING

DO NOT use parts from other trucks or materials a hitch or to replace a missing hitch. The parts provided for recovery are made of high strength materials and are specifically designed for vehicle recovery. Failure to use the correct factory equipment may result in an accident involving death or personal injury.

from other sources to repair

CAUTION

Connect recovery rigging only to hitches

intended for that purpose. DO NOT attach to bumpers or brackets. Use only equipment designed for this purpose. Failure to comply may result in equipment damage.

How to use a Recovery Hitch

CAUTION

Recovery pull maximums assume the

rigging evenly distributes the load

tow between both recovery hitches. See examples in Recovery Rigging for details. Serious damage to the vehicle may occur if rigging is not connected properly.

CAUTION

When recovering ditched or bogged vehicles, Capacities. Even at loads below maximum, the physical strain of recovering a vehicle could damage axles, suspensions, fifth wheels, etc.

Use the following procedure to install the V

ehicle Recovery Hitches. See Recovery Hitch Assembly illustration for part identification.

1. Check the square sockets behind

stay well below Maximum

lower bumper for obstructions, clear if necessary.

2. With lock pins removed, insert the hitches through the bumper and into the square hitch socket.

Align the hole in the tow hitch with the square hitch socket hole.

4. Insert the lock pin into the square hitch socket hole and through the hole in the tow hitch until the lock tab is within the square hitch socket.

5. Rotate the lock pin 90 degrees to secure the pin in place.

6. Ensure that the tow pin and lock clip are installed before using the hitch.

7. Remove the hitches and store all parts after recovering the vehicle.

How to Prepare the Axles for Towing

If the vehicle is going to be towed from the front axle and using the rear axle for support, then the axle shafts should be prepared [removed] so that minimal damage is made to the differential during the towing process. Ensure that the recovered vehicle does not have an open air line. An open air line on the recovered vehicle will cause a leak in the air system of the recovery vehicle if

52 Y53-6110-1A1 (01/21)

both vehicles’ brake systems are connected. This could cause a loss of system air brakes not to function, resulting in the sudden application of the spring brakes causing wheel lock-up, loss of control, or overtake by following vehicles.

, which can cause the service

WARNING

An open air line on the recovered vehi-

will cause a leak in the air system

cle of the recovery vehicle if both vehicles’ brake systems are connected. This could cause a loss of system air, which can cause the service brakes not to function, resulting in the sudden application of the spring brakes causing wheel lock-up, loss of control, or overtake by following vehicles. You could be in an accident involving personal injury or death. Ensure that any air line that has been removed from a drivercontrolled main differential lock is firmly capped to prevent loss of air pressure from the recovery vehicle if it is supplying air pressure.

1. Lift driving wheels off the ground or remove the driveline and axle shafts before towing the vehicle.

CAUTION

Failure to lift the driving wheels off the

or remove the driveline and

ground axle shafts before towing the vehicle could seriously damage your vehicle. All lubricating and clutch application oil pressure is provided by an enginedriven pump, which does not work when the engine is stopped. When vehicles are towed either by wrecker or piggyback, lubricant in the top front of the drive axle will drain to the rear. This will leave the top components dry, resulting in friction that will seriously damage these components.

2. If the vehicle has driver controlled differential lock, then manually lock the differential.

3. Remove drive axle shafts.

4. Cover the open ends of the hubs to prevent dirt and debris from entering the axle.

CAUTION

Water, dirt, and other material can en-

an open hub or axle. This can con-

ter taminate the axle fluid and cause possible damage to components. Ensure that the hubs are covered with plastic whenever a drive axle shaft is removed.

How to Manually Lock a Differential

Follow these procedures if the vehicle has a driver controlled differential lock. Always lock the differential when the axles are being removed to aid in re-installation. This procedure should be done before the axle shafts are removed.

CAUTION

Failure to install the caging bolt when towing main differential lock can result in damage by failing to lock internal components in position.

vehicles with driver-control

Y53-6110-1A1 (01/21) 53

WARNING

An open air line on the recovered vehi-

will cause a leak in the air system

CAUTION

A recovered vehicle will have no operational the rear axle spring brakes will probably be applied.

brake system. Additionally,

• If you desire to use the recovered

• If you don’t want to use the

1. Remove the air line and firmly cap

3. Screw the caging bolt into the air

s brakes, ensure that the

vehicle’ vehicle's air system is connected to that of the recovery vehicle. Also ensure that any air line that has been removed from a drivercontrolled main differential lock is firmly capped to prevent loss of air pressure from the recovery vehicle.

recovered vehicle’s brakes, ensure that you cage the spring brakes before attempting to move the vehicle.

the air line from the vehicle. (2) Remove the caging bolt from its

storage hole. (1)

line hole. (2)

4. When fully engaged, a 0.25-0.5 in. (6.35-12.7 mm) space will remain between the air cylinder and the bolt head. This action will lock the differential by pushing a piston into a “lock” position.

Recovery Hitch Capacities

The maximum rated loads for vehicle recovery varies depending on the direction or angle of pull. These capacities are listed in the table below and are for the two hitches working together, simultaneously.

Direction of Pull Maximum

Directly forward 80,000 (36,000)

Directly vertical or horizontally to the side

45 degrees in any direction

Capacity lbs. (kg)

14,600 (6,600)

20,000 (9,000)

54 Y53-6110-1A1 (01/21)

Best Practices for Recovery Rigging

CAUTION

Recovery pull maximums assume the

rigging evenly distributes the load

tow between both recovery hitches. See examples in Recovery Rigging for details. Serious damage to the vehicle may occur if rigging is not connected properly.

CAUTION

When recovering ditched or bogged vehicles, Capacities. Even at loads below maximum, the physical strain of recovering a vehicle could damage axles, suspensions, fifth wheels, etc.

stay well below Maximum

Recovery Rigging Options

Use a double chain or cable setup that distributes the load equally to both hitches (see either example in Recovery Rigging Options illustration):

•

Never loop a single chain or cable through both hitches, also known as reeving (not shown).

• Use a spreader or equalizer bar to distribute the load on both hitches (1), or

• If no spreader bar is available, connect the main tow chain or cable no closer than 6 ft. (1.8 m) from the vehicle: (2) to (3).

• Secure the towed vehicle using two additional chains or cables (see Safety Chains) (not shown).

Returning to Service After Recovering

Once the vehicle is recovered, the axles need to have oil added to prevent gear damage during operation.

Into the pinion cage, add 1 pint (.47 liter) of lubricant or into the interaxle differential, add 2 pints (.94 liter) of approved lubricant.

2. After adding the specified type and amount of lubricant, drive the vehicle. It should be unloaded. Drive 1 to 2 miles (1.5 to 3 km) at a speed lower than 25 mph (40 km/h). This will thoroughly circulate the lubricant through the assembly.

3. If the parking brakes were manually released, they will need to be modified back to their normal operating condition.

4. If the differential lock was manually locked, then the caging bolt needs to be put back in its storage location and the differential lock air line needs to be re-installed in its normal position.

Add lubricant back to the axles after recovering the vehicle and before putting it back into service.

Y53-6110-1A1 (01/21) 55

What to do if the Vehicle is Stuck in Sand, Mud, Snow or Ice

WARNING

DO NOT spin the wheels faster than

mph (55 km/h). Spinning a tire at

35 speedometer readings faster than 35 mph (55 km/h) can be dangerous. Tires can explode from spinning too fast. Under some conditions, a tire may be spinning at a speed twice that shown on the speedometer. Any resulting tire explosion could cause injury or death to a bystander or passenger, as well as extensive vehicle damage: including tire, transmission, and/or rear axle malfunction.

These suggestions are provided to improve the ability to free a vehicle if the vehicle gets stuck in sand, mud, snow, or ice:

• Move the gearshift lever or selector from First to Reverse

• Apply light pressure on the accelerator pedal while the transmission is in gear

• Remove your foot from the accelerator while shifting

• Do not race the engine

• For best traction and safety, avoid spinning the wheels

Follow these practices to avoid transmission damage:

Always start vehicle in motion with

• the shift lever in first gear.

• Be sure that transmission is fully engaged in gear before releasing the clutch pedal (manual only).

• Do not shift into reverse while the vehicle is moving.

• If the vehicle needs to be recovered from being stuck, do not permit the vehicle to be towed for long distances without removing the driveshaft.

If tire chains are needed, make sure they are installed on both sides of the driving axle. Installing chains on only one side of the axle can cause equipment damage.

CAUTION

Chains on the tires of only one tandem axle can damage the driveline U-joints and the inter-axle differential. Repairs could be costly and time-consuming.

Failure to comply may result in equipment damage.

Towing the Vehicle

A dealer or commercial towing service will have the necessary equipment to safely tow the vehicle and should be able to make arrangements to limit any damage to the vehicle. The towing service and the dealer should be aware of towing regulations and safety precautions. The towing service will ensure that the following precautions are taken:

Use of a safety chain system

•

• Abide by all local towing regulations

• Ensure that the towing device does not contact any surfaces that could be damaged while in transit

• If towing from the front, ensure that the rear axles are prepared for towing

• If towing from the rear, ensure that all body components such as roof, side, and chassis fairings are secured properly to avoid damage while in transit

56 Y53-6110-1A1 (01/21)

WARNING

Secure the roof, side, and chassis fair-

while towing from the rear. An un-

ings secured fairing may come off of the vehicle during transit. Failure to secure the fairings while towing may cause an injurious accident resulting in death or personal injury.

Y53-6110-1A1 (01/21) 57

Chapter 3 | CONTROLS

Instrument Cluster...............................................................................................................................

Peterbilt Digital Display Controls.........................................................................................................62

Peterbilt Digital Display....................................................................................................................... 63

Selecting a View..................................................................................................................................66

Configure Settings...............................................................................................................................72

Drive Summary................................................................................................................................... 77

Driver Rewards (option)...................................................................................................................... 77

Driver Performance Assistant (option)................................................................................................ 78

Bulb Check..........................................................................................................................................79

Guide to the Warning Symbols............................................................................................................81

Optional Gauges................................................................................................................................. 92

Dash Switches.................................................................................................................................... 93

Ignition Key Switch............................................................................................................................107

Exterior Lighting Self-Test................................................................................................................. 107

Steering Column Controls.................................................................................................................108

Steering Wheel Controls................................................................................................................... 112

58 Y53-6110-1A1 (01/21)

Door Mounted Mirror Controls...........................................................................................................113

Heating and Air Conditioning.............................................................................................................114

Sleeper Alarm Clock......................................................................................................................... 123

Cab Accessories............................................................................................................................... 124

Y53-6110-1A1 (01/21) 59

Instrument Cluster

For information on using the dash and instrument cluster options while driving,

see the paragraphs that follow. Please remember that each vehicle is custom-

our instrument panel may not look

made. Y exactly like the one in the pictures that follow. We have tried to describe the most

common features and controls available. You can pick out the parts that apply to you and read them to be fully informed on how your particular vehicle operates.

1. Peterbilt Digital Display

Compact Trailer

2. Valve

3. Navigation/ Infotainment (or Optional Gauges)

4. Switches

5. Glovebox

6. Parking Brakes

7. Cupholders

8. Air Conditioning

9. Radio

60 Y53-6110-1A1 (01/21)

1. Additional Switches Ignition Switch

Y53-6110-1A1 (01/21) 61

Peterbilt Digital Display

Controls

View, navigate and select items in the Menu, and view Popup messages. The shortcut button will access items that are configured in the settings, Shortcuts on

page 76

Scroll Wheel

Use the Scroll Wheel to navigate through menus and press down to select menu options, change settings when in the menu, and switch between Views.

1. Scroll Wheel Shortcut

3. Back/Cancel

The controls located on the right pod of the steering wheel are used to select Drive

62 Y53-6110-1A1 (01/21)

For example, press down and then scroll to access the clock menu. Then press down and scroll again to adjust the clock values. Press down to select the menu:

Menu Example: main Menu

Press again to select the sub-menu:

Menu Example: Settings

Use the Scroll Wheel to scroll through the values then press down to select.

Menu Example Set Function

Back

Use the Back button to return to the previous menu, suppress a popup , or cancel a selection. Popups on page 81.

Peterbilt Digital Display

The digital display will stay visible during all driving situations and in some parked situations. When the parking brake is set

the following actions will wake the display, making it visible:

Opening (or keeping open) the cab

• doors

• Using steering wheel switches

• Tapping the brake

• Turning the ignition switch to ON, ACC, or START

• Starting the engine.

If after 20 seconds none of these actions are taken, the display will darken to conserve power, but will awaken if any wake action is performed. If the Anti-Theft option is active and you attempt to start the engine, a passcode prompt will appear; the engine cannot be started until the correct passcode is entered (see Anti-Theft on page 76).

Y53-6110-1A1 (01/21) 63

910

Display Indications Always Shown

1. Active Warnings Outside Air

2. Temperature

3. Diesel Particulate Filter Indicator

4. View Indicator

5. Transmission Mode

6. Sub-Trip

7. Trip

8. Driver Profile

9. Odometer

10. Engine Hours

11. Battery

12. Aux Battery Indicator

13. Clock

Active Warnings

Red or amber popups are counted and the total is displayed by the active warning

. In addition, these counts are also

indicator presented in

• Systems Check

• The Notifications Sub-menu

• A Drive Summary

The numbers may change without user interaction if individual warnings are intermittent, time based, self correcting, or the situation is rectified.

outside temperate approaches freezing (36°F or 2°C) an icon will appear next to the temperature (snowflake for freezing and thermometer for high) and a chime will sound. The system's unit of measure

Outside Air T

emperature

Outside Air Temperature monitors the ambient temperature outside the truck The display will alert the driver to high and low temperature conditions. When the

(Fahrenheit or Celsius) can be changed by navigating to the settings menu. The outside air temperature display uses a sensor (located at the bottom of the driver's side mirror assembly) to measure outside air temperature only. It is not

64 Y53-6110-1A1 (01/21)

capable of displaying the temperature of

4 25 1

the road surface on either the temperature display or the snowflake icon. Additionally the outside air temperature reading may be affected by exposure to direct sunlight.

View Indicator

The View Indicator identifies which view is currently selected:

• Favorites (if enabled)

• Minimized

• Minimized with Advance Driving

• Basic

• Enhanced

Drive, Neutral, and Reverse Indicator

The Drive, Neutral, and Reverse Indicator reflects the shifter position of an Automatic Transmission. Manual transmissions and certain automatic transmission do not provide feedback to the display. Instead, the transmission shifter indicates the gear condition.

Assistance (Optional)

Sub-trip Odometer

The T

rip Odometer can be split into smaller segments called Sub-trips. Start a Sub-trip by pressing Trip on the steering wheel. The maximum distance that the sub-trip will show is 9,999.9 at which point it will start over at zero. When it maxes out, the current sub-trip ends and begins a new one. Sub-trip information is also found in the settings menu Trip Summary on page

72.

Trip Odometer

The Trip Odometer shows how far the vehicle has gone traveled since last it was reset. The maximum distance that can be shown on the Trip Odometer is 99,999.9 at which point the operator needs to reset. Press Trip to set. Press and hold Trip to reset (Item 1 in following image).

Left Switch Pod

1. Trip marker

Limiter control

3. Cruise control ON/OFF

4. Cruise control set/resume

5. Toggle switch

Y53-6110-1A1 (01/21) 65

The operator may also use the trip summary to view the same information T

Summary on page 72.

Driver Profile Indicator

The number following the icon indicates which driver is active when Driver Profiles are enabled. For information on Driver Profiles, Choosing the Active Driver Profile on page 74.

Odometer

The odometer displays the total distance your vehicle has traveled. The maximum distance that can be shown on the odometer is 9,999,999.9. The odometer will roll over to zero if maximum mileage is achieved.

Engine Hours

Engine hours will display the total number of hours the engine has been operated. The maximum hours that can be shown are 99,999.9 before the counter rolls over to zero.

Battery Voltage

The Battery Voltage indicator shows the battery icon, voltage, and the state of

charge. The battery icon will be replaced

rip

with the Low Voltage Disconnect (LVD) icon when Low Voltage Disconnect is active. The battery icon is gray when operating normally, but changes to amber to indicate a low voltage condition and red to indicate a high or very low voltage condition.

Clock

The clock can be displayed in a 12-hour or 24-hour format. Clock settings can be altered in the Settings Sub-menu.

Transmission Gear Display

Vehicles with PACCAR or Eaton automated transmissions will show the transmission mode, current gear, and diagnostic information associated with the transmission. Vehicles with manual transmissions will show the current gear. This display does not apply for vehicles with Allison transmissions.

Selecting a View

The instrument cluster has 5 views for the operator to use.

• Favorites

• Minimized

• (Optional) Minimized with Advanced Driver Assistant

• Basic View

• Enhanced View

Each view is identified by a specific view indicator on the right side of the display area.

Minimized View

A combination speedometer and tachometer will show in the center of the Minimized View.

Speedometer and Tachometer

Vehicle and engine speed are presented at the center of the display. Units for vehicle speed can be changed to either Standard or Metric in the Digital Display menu (see

Units and Language on page 72) or by

using the steering wheel Shortcut button (see )(see Peterbilt Digital Display Controls on page 62).

Minimized View with Driver Assistance (Option)

66 Y53-6110-1A1 (01/21)

Minimized with Driver Assistance (Option)

30ºF

9,999.9

9,999,999.9

348.5

M I

Trip

M I

86%

12.5V

100%

10:45 P

AUX

PTO

RPM

MPH

SPEED LIMIT

DPF

1. Optimal RPM Indicator

Smart Tach

3. Engine Speed

4. Transmission Gear

5. Driver Assistance area

6. View Indicator

Y53-6110-1A1 (01/21) 67

Adaptive Cruise Control Notification (option)

This indication at vehicle start means it is equipped with Adaptive Cruise Control (ACC) and Collision Mitigation. These features work together to improve driver safety and enhance the driving experience. When Cruise Control is active, ACC will accelerate and slow the truck to maintain a chosen distance from a detected forward vehicle. Collision Mitigation will attempt to

prevent a forward collision when advancing at speeds greater than 15 mph (24 kph). Please review the ACC section of this manual, and the manufacturer prior to driving this vehicle.

’s manual,

Basic View and Enhanced View

68 Y53-6110-1A1 (01/21)

Enhanced View

2 21

1. Gauges for Basic

iew and Enhanced

V View

2. Gauges for Enhanced View only

Y53-6110-1A1 (01/21) 69

Basic View

This view combines the instrumentation presented in Minimized V such as Fuel and DEF level.

iew with gauges

Enhanced View

This view includes all the gauges present in the Basic View, adding gauges on the left and right in the display. Enhanced View

MPG8.2

DEF

MPG8.2

is designated by the bottom icon in the

iew Indicator.

Gauges

Gauge locations may be customizable and the gauge can react depending on the readout indicated. (Favorites on page Some gauges are a flat bar rather than a typical dial gauge.

NOTE

The instrument cluster gauges may

, if hidden from view, change

appear brightness and change color to bring attention to a particular system.

75)

Diesel Exhaust Fluid (DEF)

The diesel exhaust fluid gauge shows the approximate amount of DEF fluid in the DEF tank.

DEF Level Gauge

CAUTION

Use Diesel Exhaust Fluid only. Failure to

do so may damage components of

the Diesel Particulate Filter (DPF).

Besides empty and full, the gauge also indicates 1/4, 1/2, and 3/4 of total capacity DEF fluid is required to meet certain emission requirements. A warning icon and popup message will appear when the DEF level is low. Do not allow your DEF tank to remain empty. Please refer to your emission supplemental manual for more details about DEF fluid.

NOTE

The instrument cluster gauges may appear

, if hidden from view, change brightness and change color to bring attention to a particular system.

Fuel Level

Fuel Level Gauge

The Fuel gauge(s) indicate the fuel level.

WARNING

DO NOT carry additional fuel contain-

in your vehicle. Fuel containers, ei-

ers ther full or empty, may leak, explode, and cause or feed a fire. Failure to comply may result in death or personal injury.

70 Y53-6110-1A1 (01/21)

WARNING

NOTE

Diesel fuel in the presence of an igni-

source could cause an explosion.

tion A mixture of gasoline or alcohol with diesel fuel increases this risk of explosion. DO NOT remove a fuel tank cap near an open flame. Use only the fuel and/or additives recommended for your engine. Failure to comply may result in death, personal injury, equipment or property damage.

CAUTION

Use only Ultra Low Sulfur Diesel (ULSD)

Fuel, as recommended by engine manufacturers. If you need further information on fuel specifications, consult the Engine Operation and Maintenance Manual.

Y53-6110-1A1 (01/21) 71

For Export vehicles, the fuel gauges will

not state: ULTRA LOW SULFUR

DIESEL FUEL ONLY.

NOTE

This vehicle may be manufactured

different fuel systems and differ-

with ent draw tube locations. Because of this and the amount of road crown, it is recommended that you do not operate your vehicle with less than one-quarter of your truck's fuel capacity. Allowing the fuel level to go below one-quarter of capacity could result in the lack of fuel to keep the engine running. In addition, you will want to keep the fuel tanks at least half-full to reduce condensation of moisture in the tanks. This moisture can damage the engine.

The instrument cluster gauges may

appear

, if hidden from view, change brightness and change color to bring attention to a particular system.

Favorites View (optional)

ehicles with Favorites View will allow the operator to customize the arrangement of many of the gauges. Using the Favorites View requires the operator to Scroll to select the Minimized View. Once the Minimized view is showing, Scroll up once more to the star icon the View Indicator. See Favorites on page 75 to customize the Favorites view.

Configure Settings

Menu Example: main Menu

Notifications

Notifications display system messages related to the condition of your vehicle. It displays

Tire Pressure Monitoring System

• (TPMS) (optional)

• Active messages

• Systems Check

Automatic Time (optional)

24-Hour Time

Set Time Set Time is available when Automatic Time

When enabled, trucks with Automatic T zone appropriate data.

Choose between 12 or a 24 hour format. AM or PM (A or P) shall only be displayed in 12-hour time format.

isn't enabled. Set the clock to indicate your local time.

ime will receive time

Trip Summary

Presents a summary of details such as fuel economy and distance of the trip, collected during the main trip and/or Sub-trips.

The following Menus

• Notifications

• Trip Summary

• Settings

• Truck Information

are accessible when

1. The Parking Brake is set

2. All active popup messages are viewed and suppressed

3. Press the Select button

These menus allow the operator to configure settings on the vehicle.

These details will be collected until the Trip is reset, or the max trip distance (99,999.9 miles for main, 9,999.9 for Sub-Trips) is reached.

Settings

Settings allows the operator to customize the Display.

General

Time

This menu allows the operator to customize the clock.

If Anti-Theft is enabled, Settings will not be accessible until the correct Passcode is entered.

72 Y53-6110-1A1 (01/21)

Units and Language

Units

Use this setting to change the units of measurement between Standard, Metric (Bar), and Metric (PSI).

Language

Use this setting to change the language.

Features

Features allows the operator to enable optional features on the vehicle to customize their experience.

Predictive Cruise Overshoot

Configure the Predictive Cruise Control Overshoot through this menu item. See

Predictive Cruise Control (Option) on page

148 for more details about Overshoot and Predictive Cruise Control.

LVD Setup

Change the LVD battery voltage set point for LVD to turn on Low Voltage Disconnect

(LVD) (option) on page 257.

Trailer Detection (Option

The trailer outputs on your vehicle will detect a connected trailer when this feature is enabled. The operator will be notified when a trailer connection is not detected.

Digital RPM (optional

Provides a digital numeric readout of the engine speed in the speedometer.

Windshield Wiper Interlock

This activates the headlights when the windshield wipers are turned on.

Dark Cabin

Dark Cabin prevents cab interior lights from turning on when a cab door is opened.

Shutdown Timer

WARNING

Never idle your vehicle for prolonged

of time if you sense that ex-

periods haust fumes are entering the cab. Investigate the cause of the fumes and correct it as soon as possible. If the vehicle must be driven under these conditions, drive only with the windows open. Failure to repair the source of the exhaust fumes may result in death, personal injury, equipment or property damage.

CAUTION

DO NOT allow your engine to idle, at low

rpm (400-600 rpm), longer than five minutes. Long periods of idling after the engine has reached operating temperatures can decrease engine temperature and cause gummed piston rings, clogged injectors, and possible engine damage from lack of lubrication. The normal torsional vibrations

generated can also cause transmission wear

CAUTION

Do not stay in the vehicle with the en-

running or idling for more than 10

gine minutes with the vehicle's Heater and A/C ventilation system in RECIRC or

at LOW FAN SPEED. Even with the ventilation system on, running the en-

gine while parked or stopped for prolonged periods of time is not recommended.

Y53-6110-1A1 (01/21)

CAUTION

Prolonged periods of idling can result

lower than optimal engine/transmis-

in sion operating temperatures which could cause increased rates of wear.

Do not allow the engine to operate at idle for extended periods at temperatures at or below 160F/71C. To

help prevent this from occurring on PACCAR engines, an idle shutdown feature can be programmed to shut the engine down after a period of low idle operation with no driver activity. A flashing warning lamp will inform the driver of an impending shutdown. Failure to comply may result in equipment or property damage.

NOTE

If you are required to idle your vehicle

long periods of time, install an aux-

for iliary heater or automatic idle control. These auxiliary devices can reduce

fuel consumption and save you mon-

When active, the Shutdown Timer will keep the engine running for a period of time after the ignition switch is placed in the OFF position. This allows the driver to exit the cab while sustaining power to the cab

. Normally, this would require the

interior key to remain in the ignition, potentially leaving the cab unlocked and accessible. When the timer reaches zero, the engine stops, removing power from certain electrical loads. The timer counts down in the Drive Summary. The Shutdown Timer is enabled or disabled in the Display menu and can be set for up to 30 minutes. This setting can be changed in the Settings Sub-menu or while counting down, in the Drive Summary, using the Scroll and Select (See

How to Set the Shutdown Timer on page

140). The Shutdown Timer setting may be limited to less than 30 minutes (See Greenhouse Gas Certified Configuration). If your truck has the Engine Idle Shutdown Timer (EIST) option and it is set for a

shorter shutdown time, the Engine will shutdown at the shorter timer setting.

Driver Profiles

This feature saves customizations made as a Driver Profile. Turning Driver Profiles ON for the first time will load current customizations into Driver Profile 1 and make it the active profile. The profile can be changed in this menu. The active Driver Profile can also be changed after setting the park brake and

then pressing Back. 2 Changes to Driver Profile will be auto-saved while making customizations. They will not be lost when turning the feature off.

NOTE

The last used active profile, including

changes to that profile, will remain

any the profile until a new one is selected.

Choosing the Active Driver Profile

Press Back when the parking brake is set to change the active Driver Profile.

The ignition key may need to be cycled back to OFF and then ON to access the Driver Profiles Settings.

74 Y53-6110-1A1 (01/21)

Favorites

o disable Favorites, contact your

T authorized dealer. Vehicles with Favorites View enabled allow the operator to create a customized arrangement of all but centrally located gauges. To change the Favorites configuration, stop the truck, set the parking brake and

• Access Favorites via the Settings Sub-menu. OR

• Scroll to Favorites (represented by a star in the View Indicator) and press Select.

Adding a Gauge to Favorites

The truck must have the Parking Brake set to add a gauge. You must be in the Edit Your Favorites menu to perform this procedure. Adding a gauge requires that the gauge is not already assigned a location in Favorites View. If you want to move a gauge already assigned, you must first remove that gauge Removing a Gauge

from Favorites on page 76.

1. Scroll the list until you locate the desired gauge or compound gauge.

Edit Your Favorites (Center of Screen)

If the gauge you want to position is already present in the Favorites V single or compound gauge) it will not appear as a menu option.

2. Select to choose the gauge you want to position.

3. Scroll through the valid locations (this can include positions currently

iew (either as a

holding a gauge, which may be replaced) and target that position.

If a position is not valid, the display will read "Not A

4. Select to Add or Replace the

Navigate and Select "Save Configuration" when all gauges have been arranged. The Display will read "Y configuration has been saved." Press Back to exit Editing Favorites.

vailable."

Edit Your Favorites (Left-side of image)

gauge.

our favorites

Y53-6110-1A1 (01/21) 75

Removing a Gauge from Favorites

The Parking Brake must be set and at least one gauge must be in the Favorites V to remove a gauge. The Speedometer/Tachometer, Fuel, and Air pressure gauges located at the Display center cannot be removed. If the gauge you want to remove is part of a multiple gauge group, the whole group must be removed.

1. Select "Remove Gauge."

2. Scroll to highlight the gauge to be removed and Select.

Navigate andSelect "Save Configuration" if this is the last change you want to make to Favorites View. The Display will read "Your favorites configuration has been saved." Press Back to exit Editing Favorites.

iew

Shortcuts

Use the Shortcuts option to assign one of the following features to the Shortcut button.

• Dark Cabin – Toggles Dark Cabin On/Off.

• Digital RPM – Provides a numeric read-out of RPM within the speedometer.

• Dual Speedometer – Shows a compound Speedometer with both Standard and Metric V

• Favorites – Selects the Favorites View on the Display.

• Metric Units – Switches all measured units used on the Display between Standard and Metric.

alues. .

Anti-Theft

Anti-Theft prevents starting the engine and accessing the settings sub-menu. If AntiTheft does not show in the settings submenu, see your authorized dealer to install Anti-Theft. If Anti-Theft is enabled, turning the ignition switch to START prompts the operator to enter the passcode. Once the correct passcode is entered, you have five minutes to start the engine or the passcode must

be re-entered. To enable or disable Anti-Theft, change Anti-Theft (ON/OFF) in the settings submenu and enter the current passcode.

How to Enter the Passcode

The ignition key and the current Passcode are required. The default passcode is set to factory. Please see an authorized dealer if a custom passcode is needed. With the anti-theft feature turned off, the operator will not need a passcode to start the engine.

1. Using the Scroll , scroll to the first number in the code then press

Select.

Anti-theft first digit

The next digit will be selected.

0000 at the

The five minute timer can be postponed in one minute intervals using any steering wheel switch.

76 Y53-6110-1A1 (01/21)

2. Scroll to the number you want for this digit and press Select. The next digit will be selected.

Continue this process until all four

3. digits have been chosen.

Anti-theft last digit

• Transmission

• GHG Vehicle Speed Limits

• Remote Station Interlocks

• Predictive Cruise Control option

• Adaptive Cruise Control (ACC) option

• Power Take Off (PTO) option

Information specific to these categories will be shown in the Truck Information Submenu.

• Three customer-selected reports (i.e. Idle Time, Fuel Economy)

The Drive Summary collects information since the last time the engine was off for at least two hours. When insufficient information has been collected, Drive Summary will show dashes for the monitored component or report. Customerselected reports can be changed at your local dealership.

Drive Summary

The Drive Summary presents information about the most recent leg of travel and is shown when the ignition key is turned to “off.” The Drive Summary consists of

The display will read "Turn Key to Start Engine."

ruck Information

Truck information stores specifications and data about the vehicle.

• Chassis

• Engine

• Anti-lock Brake System

Y53-6110-1A1 (01/21) 77

• Critical and Non-critical Issues (see

Systems Check)

• Shut Down Timer (if active) (see

Shut Down Timer)

• TPMS (option) (see Tire Pressure

Monitoring System (TPMS) (option)

on page 37)

• Driver Rewards (option) (see Driver

Rewards)

• Driver Performance Assistant (option) (see DPA)

Driver Rewards (option)

If enabled, Driver Rewards raises or lowers the vehicle’s max-allowable speed based on whether a programmed, fuel economy goal is met. This goal is defined by the customer and can be based on fuel consumption, engine idle time, or both fuel consumption and idle time. The driver is assigned a score based on how successfully they meet or exceed this goal. Driver Rewards is only available for vehicles equipped with a PACCAR MX engine. The fuel consumption goal is met by reducing the amount of fuel used over a given distance. This is achieved by

• Driving slower

• Minimize Speed Changes Accelerating gently

•

• Coasting in gear

• Using the Cruise Control

• Maintaining optimal tire pressure.

• Reducing the trailer gap

• Running a Warmer Cab.

• Turning off extra electrical loads

The engine idle time goal is met by reducing the time the engine idles (running the engine when the vehicle is not in motion). The Driver Rewards score is based on driving habits. This score is compared to the goal and a max-speed bonus or penalty is determined. The Driver Rewards score is shown during a Systems Check and in the Driver Summary. When there is a bonus or penalty, it appears below the Cruise Control (CC) indicator on the dash, and the max-allowed speed shows to the right of the CC indicator. Driving habits that reduce fuel use will earn the operator a higher max speed; habits that consume more fuel will lower the max speed. Driver Rewards will never grant a bonus that exceeds programmed federal emission regulated or customer defined speed limits. During the Systems Check, the Driver Rewards and DPA features offer general

driving tips that can increase fuel economy and brake savings. These features also provide feedback in the Driver Summary based on a driver’s specific driving habits. This advice if followed can improve future Driver Rewards and DPA scores. Driver Rewards has three customerdetermined modes of activation: only when CC is in use, when CC is not being used, or at all times. The Driver Rewards goal and the amount of penalty or bonus is also customer-determined and should be based on reasonable expectations for a known route of travel. The Driver Rewards goal should be reconsidered if the manner of vehicle use or the vehicle route changes significantly. To enable or disable Driver Rewards, or change the mode of activation, reward amounts, or set a new Driver Rewards goal, contact your dealership.

Driver Performance Assistant (option)

If enabled, the Driver Performance Assistant (DPA) determines how skillfully the operator uses coasting and the engine brake when reducing vehicle speed.

Coasting and engine brake use, instead of frequent, aggressive use of the service brakes, can extend brake life and increase fuel economy. The DPA assigns the driver a score based on their braking habits and provides suggestions on how to improve these habits. The DPA feature is only available for vehicles equipped with a PACCAR MX engine. The driver’s DPA score is determined by comparing their braking and coasting habits against a customer-defined goal for braking use and coasting. A score that meets or exceeds this goal will award positive feedback in the Driver Summary. During the Systems Check, the DPA and Driver Rewards features offer general driving tips that can increase fuel economy and brake savings. These features also provide feedback in the Driver Summary based on a driver’s specific driving habits. This advice if followed can improve future DPA and Driver Rewards scores (see Driver Rewards). To enable or disable the DPA or set a new DPA goal, contact your dealership.

78 Y53-6110-1A1 (01/21)

Bulb Check

When the ignition switch is turned ON multiple warning icons will be displayed in a sequence to test each warning light indicator. The total sequence should take no more than 10 seconds to complete. Have your instrumentation system checked by a qualified service technician if does not successfully complete.

Audible Alarm

The audible alarm will sound in conjunction with most warning lights. These events include but are not limited to headlight on, fifth wheel, stop engine, primary/secondary

, and driver door open warnings.

air

Optional Icons

Additional icons may be operational depending on individual vehicle specifications.

NOTE

Some optional lights may illuminate even

though your vehicle is not equip-

ped with that particular feature.

Physical Telltales

Y53-6110-1A1 (01/21) 79

These physical telltales will always appear across the top of the display

Dedicated Telltales

Dedicated Telltales always appear in the same location throughout the screen. Some are visible only when active, but

80 Y53-6110-1A1 (01/21)

most signify that the monitored component requires operator attention.

Dynamic Telltales

Engine HighOil

Temp

Reduce

Engine

Load

Check

Oil

Level

Engine

High

Oil

Temp

Reduce

Engine

Load

Check

Oil

Level

Popups

Popup: Red Oil T

Suppressable Popup Message

emp

A Popup displays information from the

. Certain types of Popups

Guide to the Warning Symbols

The warning lamps and audible alarm may indicate a system malfunction. Check the lamps frequently soon as you see one go on. These lamps could save you from a serious accident. Additionally, gauges may become visible, may change colors, or may change brightness to raise awareness to the operator. When multiple warning symbols are shown on the instrument cluster, they will appear at first and then minimize. When minimized they will be represented in the active warnings area of the display. A triangle represents a warning registered and a diamond represents a check message.

, and respond promptly as

These dynamic telltales appear on the display in the rows indicated. A dynamic telltale communicates the status of a monitored component, which may require the operator to respond or take action.

Active W

arnings

Red or amber popups are counted and the total is displayed by the active warning indicator. In addition, these counts are also presented in

• Systems Check

• The Notifications Sub-menu

• A Drive Summary

The numbers may change without user interaction if individual warnings are

vehicle computer are indicated by the Warning Indicator in the display area. Multiple Popups will appear in the display as a stack of messages. Suppressible Popups are those that will move out of the stack when driving. All are suppressible when the Parking Brake is set. The Menu will not be accessible until all Popups have been Suppressed.

Viewing and Suppressing Popups

A Popup can be read and Suppressed by pressing the Scroll Wheel. Some situations may require pressing Back/Cancel instead. For example, the popup in the following image is suppressed by pressing the Scroll Wheel (indicated with a down arrow) OR by pressing the Back/Cancel (indicated with an X below the roller).

intermittent, time based, self correcting, or the situation is rectified.

Y53-6110-1A1 (01/21) 81

WARNING

DO NOT ignore a warning lamp or au-

alarm. These signals tell you

dible something is wrong with your vehicle. It could be a failure in an important system, such as the brakes, which could lead to an accident causing

death or injury. Have the appropriate system checked immediately

Check messages are provided to give the operator additional information regarding systems that require attention due to a system malfunction and/or operating conditions that may hinder safe and proper performance of the vehicle. The system will emit a chime to alert the operator that a

message is appearing on the cluster. Some messages can be managed by the operator while others may require an authorized dealer repair table is a list of warning lamp/indicator symbols that appear in the instrument cluster. Each symbol has a unique name, color when illuminated, and whether the symbol is standard (STD) or optional (OPT).

. In the following

Symbol Name Color

ADAS Camera Fault

Axle, Stability Control (Option) on page 84 Yellow STD

Axle, Traction Control on page 85 Yellow STD

Brakes, Antilock Brake System on page 86 Yellow STD

Brakes, Low Air on page 86 Red STD

Brake, Park Brake on page 86 Red STD

Brakes, Trailer Antilock Brake System on page 86 Yellow STD

Cab, Door Ajar Amber STD

Differential, Inter-Axle Lock on page 87 Yellow OPT

Dump Truck, Body Up on page 87 Red OPT

82 Y53-6110-1A1 (01/21)

on page 84 Yellow OPT

Standard or

Optional

Symbol Name Color

Dump Truck, Gate on page 87Dump T

Diesel Particulate Filter (DPF) Warning Light on page 88 Yellow STD

Emissions, Derate Amber STD

Emissions, High Exhaust System Temperature on page 88 Yellow STD

Emissions, Malfunction Indicator Light on page 88 Yellow STD

Engine, Check Engine on page 89 Yellow STD

Engine, Engine Block Heater on page 89 Yellow OPT

Engine, Low Coolant Level on page 89 Yellow STD

Engine, Overspeed Air Shutdown on page 89 Red OPT

Engine, Retarder (Brake) on page 89 Green OPT

Engine, Stop Engine on page 89 Red STD

Engine Wait-to-Start Light on page 89 Yellow OPT

Fifth Wheel Slide Unlocked on page 90 Red OPT

Fifth Wheel Locked on page 90 Red OPT

Fifth Wheel Unlocked on page 91 Red OPT

Lane Departure Warning (LDW) on page

Lane Departure Warning (LDW) Fault on page 91 Yellow OPT

ruck, Gate Yellow OPT

91 Yellow OPT

Standard or

Optional

Y53-6110-1A1 (01/21) 83

Symbol Name Color

Lights, High Beam on page 91 Blue STD

Fast Idle Control on page

Refrigerator on page 91 Green OPT

Seat Belt Fasten Red STD

Suspension, Lift Axle White OPT

Tire Inflation (TPMS) on page 91 Yellow OPT

Transmission, Auxiliary on page 92 Yellow OPT

Transmission, Check on page 92 Red OPT

Turn Signal, Left on page 92 Green STD

Turn Signal, Right on page 92 Green STD

91 Yellow OPT

Standard or

Optional

optional LKA features are both dependent

ADAS Camera Fault

This amber warning light appears when a fault occurs with the camera used by the various Advanced Driver Assist (ADAS) features: Lane Departure W Lane Keeping Assist (LKA), and Adaptive Cruise Control (ACC). The LDW and

84 Y53-6110-1A1 (01/21)

arning (LDW),

on the ADAS camera, and both will be disabled when this warning occurs. In addition to issues internal to the camera, please read the topic Lane Departure

arning (LDW) on page 150 for conditions

which may limit camera performance, resulting in an ADAS Camera Fault.

Axle, Stability Control (Option)

Calculates the driver’s intended path of travel from wheel speed and steering angle sensors, then compares calculations to the actual direction of travel. The system uses individual wheel brakes to re-adjust the path of the vehicle.

The Stability Control Icon (ESC or

• Electronic Stability Control) illuminates during the Bulb Check when the ignition is turned ON. It turns off after a few seconds if no system problems are detected. If a problem is detected, the ESC Warning lamp will turn on and stay on.

• Illuminates when the ESC system is regulating individual wheel brakes to correct the vehicle’s direction of travel. (Refer to Advanced ABS with Stability Control for more information.)

WARNING

If this chassis is equipped with an Electronic Stability Control (ESC) and is modified (e.g. adding or removing an axle, converting from a truck to a tractor, converting from a tractor to a truck, changing the body, lengthening

of the wheelbase and/or frame, relocating frame components, or modifying pneumatic nesses) the ESC must be evaluated by a qualified technician. If you have any questions, contact your authorized dealer. Failure to comply may result in property damage, personal injury, or death.

or electrical ABS/ESC har-

NOTE

For more information about the stability

control system installed on your vehicle, please refer to additional material supplied with this operator manual, included in your glove box informational packet.

Axle, Traction Control

Monitors wheel speed for poor traction. If a wheel begins to slip due to poor traction, it

may reduce engine power or apply brakes

fort to regain traction.

in an ef

• Illuminates during the Bulb Check when the ignition is turned ON. It turns off after a few seconds if no system problems are detected. If an ATC problem is detected, the ATC warning light will turn on and stay on.

• Illuminates when the ATC is regulating wheel spin and turns off after the traction control event has ended.

• Flashes continuously when the ATC/Deep Snow & Mud switch is turned on, indicating that this feature is active.

Y53-6110-1A1 (01/21) 85

WARNING

Brakes, Antilock Brake System

Brakes, Low Air

If this chassis is equipped with an Electronic is modified (e.g. adding or removing an axle, converting from a truck to a tractor, converting from a tractor to a truck, changing the body, lengthening of the wheelbase and/or frame, relocating frame components, or modifying pneumatic or electrical ABS/ESC harnesses) the ESC must be evaluated by a qualified technician. If you have any questions, contact your authorized dealer. Failure to comply may result in property damage, personal injury, or death.

Stability Control (ESC) and

Illuminates during the bulb check. Have the ABS system checked by an authorized dealer if the ABS W for more than 3 seconds.

• Illuminates during normal operating conditions to indicate a problem with the ABS system.

• Illuminates when a problem exists with Automatic Traction Control (ATC).

arning Lamp stays on

Brake, Park Brake

Illuminates when system air pressure falls below 60 psi.

Brakes, T

railer Antilock Brake

System

NOTE

For more information about the stabili-

control system installed on your ve-

ty hicle, please refer to additional material supplied with this operator manual, included in your glove box informational packet.

86 Y53-6110-1A1 (01/21)

Illuminates in the status indicator when parking brakes are applied.

Illuminates during the bulb check and the tractor/truck is connected with a ABS equipped trailer operating conditions to indicate a problem with the Trailer ABS System. This should be checked by an authorized dealer as soon as possible.

. Illuminates during normal

NOTE

Tractors/Trucks and trailers built after 03/01/2001 In-Cab Trailer ABS Warning Light (per U.S. FMVSS121). The industry chose Power Line Communication (PLC) as the standard method to turn it on. On trailers built prior to 03/01/2001 verify trailer ABS system status via the required external warning light mounted on the trailer. The indicator light on the trailer should be yellow and identified with the letters ABS.

must be able to turn on an

• Variable Road Speed Limiter (optional)

When a Cruise Control function is enabled, a white indicator will appear Cruise Control function has been activated, the indicator will change from white to green. For more information on use of the various Cruise Control functions, see Cruise Control, Adaptive Cruise Control, Predictive Cruise Control, and Variable Road Speed Limiter.

. When a

Differential, Inter-Axle Lock

NOTE

Tractors/Trucks and trailers built after

03/01/2001 In-Cab Trailer ABS Warning Light (per U.S. FMVSS121). The industry chose

Power Line Communication (PLC) as

the standard method to turn it on. On trailers built prior to 03/01/2001 verify trailer ABS system status via the re-

quired external warning light mounted on the trailer. The indicator light on the

trailer should be yellow and identified with the letters ABS.

must be able to turn on an

Cruise Control

This indicator shows the operator which Cruise Control function is currently enabled or active. This includes

•

Cruise Control

• Adaptive Cruise Control (optional)

• Predictive Cruise Control (optional)

Y53-6110-1A1 (01/21) 87

Illuminates when the inter-axle differential switch is ON thus locking the inter-axle

ferential. This powers the forward rear

dif and the rear rear differentials equally. When the switch is turned off (inter-axle differential unlocked) the engine power is allowed to flow to any of the four drive tires based on the differential effect (mostly to the forward rear differential). This feature is standard on all tandem axles.

Dump Truck, Body Up

Illuminates when Truck Dump Body is up.

Dump T

Illuminates when Truck Dump gate is open.

ruck, Gate

Diesel Particulate Filter (DPF)

arning Light

This icon and related message will appear when the DPF needs to be regenerated and then also during the regeneration cycle. This may also appear if the system is attempting to automatically regenerate while the vehicle is in Power T operation mode. Engine aftertreatment system includes a diesel particulate filter and DPF warning light.

ake Off

Emissions, High Exhaust System Temperature

WARNING

If this light is on, do not park in an area

combustible vapors or materials.

of You must keep combustibles at least 5 ft. (1.5 m) away from the exhaust (outlet) stream as it exits the tail pipe while the HEST light is illuminated. Always park your vehicle outside. Failure to do so could ignite an explosion or harm bystanders which could result in serious injury.

WARNING

If this lamp is on, do not park in an area

where people are close by. You must keep combustibles at least 5 ft. (1.5 m) away from the exhaust outlet while the HEST lamp is illuminated. Failure to do so could result in serious injury.

WARNING

If this lamp is on, temperature of the tailpipe,

exhaust pipes, the diesel par-

ticular filter (DPF)/selective catalytic reduction ing components including enclosures and steps becomes elevated during engine operation or any regeneration event and can cause serious burns to the skin. Allow adequate cooling time before approaching, working on or near any part of the exhaust system or surrounding components.

Illuminates when the exhaust gas temperature and exhaust components become extremely hot.

(SCR) device and surround-

Emissions, Malfunction Indicator Light

Illuminates when an engine emissions failure has occurred. The vehicle can be safely driven but should be serviced to correct the problem. The situation should not be considered an emergency cases, the Malfunction Indicator Light will activate in conjunction with the High Exhaust Temperature, Diesel Particulate Filter (DPF), and Diesel Exhaust Fluid (DEF) Warning Lights.

. In some

88 Y53-6110-1A1 (01/21)

Engine, Check Engine

Illuminates when a non emissions related problem exists, but the vehicle can still be safely driven. V correct the problem but the situation should not be considered an emergency.

ehicle should be serviced to

Engine, Engine Block Heater

Illuminates when the engine block heater is turned on.

Engine, Low Coolant Level

Illuminates with an audible alarm indicating critically low coolant level. The vehicle must be serviced to correct the problem but the situation should not be considered an emergency.

Engine, Overspeed Air Shutdown

Illuminates when the Engine overspeed air shutdown system is activated.

Engine, Retarder (Brake)

Illuminates when the engine retarder (compression brake or exhaust brake) switch is turned on.

Engine, Stop Engine

Illuminates and an audible alarm tone will sound when a major engine system problem exists.

WARNING

If the Stop Engine warning light illumi-

it means you have a serious en-

nates, gine system problem. This should be considered an emergency. You should stop the vehicle as safely as possible and turn OFF the ignition. The vehicle must be serviced and the problem corrected before driving again. Failure to

comply may result in death, personal

injury, equipment or property damage.

Engine Wait-to-Start Light

This warning icon will appear when the system needs some time before attempting to start the engine. The light will illuminate at key ON, and will stay on for a period of up to 30 seconds.

Y53-6110-1A1 (01/21) 89

NOTE

lamp stops flashing, the starting motor will be allowed to function.

in death, personal injury, equipment or property damage.

The length of time the 'Wait-To-Start' lamp

remains illuminated depends on the ambient temperature. The lower the ambient temperature, the longer the lamp will be illuminated.

Once the Wait-to-Start light turns off, turn the key to the starting position to start the engine. Y

ou may see this appear if the system has detected a situation where the starter is too hot and needs to cool down. Alternatively, you may see it when the engine grid heater is on and needs some time to warm up.

Emissions, Engine Derate

Fifth Wheel Slide Unlocked

Illuminates when fifth wheel slide switch is activated. Indicates fifth wheel can move.

Fifth Wheel Locked

NOTE

Vehicles having an air slide fifth wheel have

a fifth wheel slider lock controlled by a switch on the instrument panel. By placing the switch in the unlock position you can slide the fifth wheel to various positions to adjust weight distribution.

WARNING

NOTE

Some engines are equipped with an

starting motor protection fea-

engine ture. If the starting motor is engaged for 30 or more seconds, without the engine starting, the starter will be locked out from operating, allowing for proper cooling of the starting motor. During this time, the 'Wait-To-Start' lamp will flash for 2 minutes. Once the

90 Y53-6110-1A1 (01/21)

DO NOT move the fifth wheel while

tractor-trailer is in motion. Your

the load could shift suddenly, causing you to lose control of the vehicle. Never operate the vehicle with the switch in the UNLOCK position. Always inspect the fifth wheel after you lock the switch to be sure the fifth wheel slide lock is engaged. Failure to comply may result

Illuminates when the fifth wheel is in the locked position.

Fifth Wheel Unlocked

Illuminates when LDW system is not able to track the vehicle's position within the lane.

NOTE

See Indicators around the speedometer on page

135.

Refrigerator

Illuminates when the fifth wheel is in the unlocked position. Indicates the king pin is disengaged.

Lights, High Beam

For vehicles equipped with Lane Departure

Warning, please refer to Lane Departure Warning Driver's Guide for additional information.

Lane Departure Warning (LDW)

Illuminates to indicate that the refrigerator is on and ignition is of

Seat Belt Fasten

Fault

Illuminates when the high beams are on. This icon will flash with audible alarm if the headlights are left ON when the door is opened and the key switch is OFF. In addition, this icon will flash, but without an audible alarm, if there is a problem with the low beam headlights or the low beam headlight wiring. In such event, the high beam headlights will turn on at 50% normal brightness.

Lane Departure Warning (LDW)

Y53-6110-1A1 (01/21) 91

This amber warning light will appear when a fault occurs in the Lane Departure W

arning (LDW) system. If this occurs, the

LDW feature will be disabled.

Fast Idle Control

The display will show the Fast Idle Control (FIC) indicator when enabled or activated. The indicator shows the set RPM value.

Illuminates when the ignition key is turned on as a reminder to fasten your seat belt.

ire Inflation (TPMS)

Illuminates when tire pressures need to be checked.

Transmission, Auxiliary

Turn Signal, Right

Blinks when the right turn signal or the hazard light function is operating.

of load you are carrying and the driving conditions you encounter temperature may vary, depending upon the axle and type of lubricant. Very high temperatures signal a need to have your axle lubrication checked.

. Maximum axle

CAUTION

Illuminates to indicate auxiliary transmission is in neutral.

Transmission, Check

Illuminates when transmission has recorded a fault code.

urn Signal, Left

Optional Gauges

For vehicles with a telematic navigation screen, optional gauges will be part of the screen functions. Please refer to the navigation system supplement for further details about its functions and how it works. Some vehicles may have optional analog gauges installed at the factory in place of the navigation screen.

Drive Axle Temperature Gauge (Forward and Rear)

Driving with very hot temperatures in

rear drive axles can cause seri-

your ous damage to axle bearings and seals. Have your axle lubrication checked if you notice a sign of overheating.

Depending on the vehicle configuration, there may be a single gauge for more than just the forward and rear driver will have an "X" over the representative axle to indicate which axle's temperature is being displayed in the gauge.

. The icon

Manifold Pressure Gauge

This gauge indicates the pressure in the intake manifold. The pressure in the

Blinks when the left turn signal or the hazard light function is operating.

92 Y53-6110-1A1 (01/21)

These gauges indicate the temperature of the lubricant in your vehicle's axle(s). These temperatures will vary with the kind

manifold is directly related to the turbo output and is related to the engine power output.

switches on the dash may require that the

Dash Switches

This custom vehicle will have a wide If the pressure indicated by your manifold pressure gauge goes down, there may be something wrong with your engine. Have it checked by a qualified service person.

Title Standard or Optional

Axle, Differential Lock - Tridrive OPT

Axle, Diff-Lock - Dual OPT

Axle, Diff-Lock - Forward Rear OPT

Axle, Diff-Lock - Rear Rear OPT

Axle, Diff-Lock - Single Rear OPT

Axle, Diff-Lock - Steer OPT

Axle, Inter-Axle Differential Locked (Tandem) OPT

Axle, Two Speed OPT

Back Up Alarm Mute OPT

Batteries, Low Voltage Disconnect (LVD) STD

Brakes, ABS Off-Road OPT

Brakes, Parking Brake Valve STD

variety of switch-controlled equipment.

However, this particular vehicle may not

have every switch identified in this section

of the operator manual. Some air device

vehicle either be at a specific speed, have park brakes set, or another device to be on

f for the air device to operate. The

or of instrument display will show information regarding what needs to change in order for the air device to operate as expected. The following table provides a complete list of icons that may be found on the switch.

Y53-6110-1A1 (01/21) 93

Title Standard or Optional

Brake, Trailer Hand STD

Cab Dimmer Switch STD

Dump Truck Gate OPT

Electric Steer, Assist Effort OPT

Engine, Fan Override OPT

Engine, Heater OPT

Engine, Overspeed Air Shutdown (Test) OPT

Engine, Overspeed Air Shutdown (Manual) OPT

Engine, Remote Throttle OPT

Engine, Under Hood Air Intake OPT

Exhaust, Diesel Particulate Filter (DPF) Regeneration STD

Fifth Wheel Slide OPT

Fuel Heater OPT

Generic Air, Accessory OPT

Generic, Spare OPT

Ignition Key Switch STD

Lane Departure Warning (LDW) Disable OPT

Lights, Auto Headlamp STD

94 Y53-6110-1A1 (01/21)

Title Standard or Optional

Lights, Auxiliary OPT

Lights, Beacon OPT

Lights, Daytime Running (Override) OPT

Lights, Dome STD

Lights, Exterior Lights Self Test STD

Lights, Flood OPT

Lights, Flood ISO 3732 Spare OPT

Lights, Fog OPT

Lights, Hazard STD

Lights, Headlight and Parking Lights STD

Lights, Marker/Clearance/Cab STD

Lights, Marker/Clearance/Trailer OPT

Lights, Park Light STD

Lights, Spot OPT

Mud and Snow Traction Control STD

Pintle Hook OPT

Power Take-off (PTO) OPT

Power Take-off (PTO), Forward OPT

Y53-6110-1A1 (01/21) 95

Title Standard or Optional

Power Take-off (PTO), Rear OPT

Suspension, Air Retention OPT

Suspension, Axle, Pusher OPT

Suspension, Axle, Tag OPT

Suspension, Dump OPT

Suspension, Third Axle Lift OPT

Trailer Air Supply STD

Trailer, Axle (3rd Axle) Lift OPT

Trailer, Axle Lift Forward OPT

Trailer, Axle Lift Rear OPT

Trailer, Belly Dump OPT

Trailer, Belly Dump Gate Center OPT

Trailer, Belly Dump Gate Front OPT

Trailer, Belly Dump Gate Rear OPT

Trailer, Dump Gate OPT

Trailer, Hotline OPT

Trailer, Suspension Air Dump OPT

Transmission, Transfer Case OPT

96 Y53-6110-1A1 (01/21)

Title Standard or Optional

Transmission, Transfer Case Two-Speed OPT

Winch Clutch OPT

Axle, Diff-Lock - Dual Axle, Differential Lock - Tridrive

Turn switch on to engage Rear Rear Axle

f Lock.

Dif

Axle, Diff-Lock - Single Rear

Turn switch on to engage Front and Rear

f Lock.

Axle Dif

Axle, Diff-Lock - Forward Rear

Turn switch on to engage Single Rear Axle

f Lock.

Dif

Axle, Diff-Lock - Steer

Tridrives will have these axle differential lock controls and are 2 separate switches.

FRONT will control the forward rear and REAR will control the center/rear-rear axle

differential. In addition, a vehicle with Tridrive will have an interaxle differential lock switch.

Y53-6110-1A1 (01/21) 97

Turn switch on to engage Forward Rear

f Lock.

Axle Dif

Axle, Diff-Lock - Rear Rear

Turn switch on to engage Front Axle Diff Lock.

Axle, Inter-Axle Differential Locked

andem)

NOTE

The mute function use is discouraged. Only use mute when legally required.

Brakes, Parking Brake Valve

Pull yellow knob to activate parking brakes.

Turn switch on to engage Inter-Axle

ferential Lock.

Dif

Axle, Two Speed

If equipped, the two speed axle switch allows you to select axle high and low ranges. The low range (Of maximum torque for operating off-highway. The high range (On) is a faster ratio for highway speeds.

f) provides

Back Up Alarm Mute

Turn switch on to mute Back Up Alarm.

98 Y53-6110-1A1 (01/21)

Batteries, Low Voltage Disconnect (L

VD)

If your vehicle is equipped with a Low V

oltage Disconnect (LVD) feature, the LVD

is integrated into the main load center.

Brakes, ABS Off-Road

Turn switch on to engage ABS Off-Road mode.

Brake, T

This dash mounted switch provides air pressure to apply the trailer brakes only operates independently of the foot treadle valve.

railer Hand

. It

Cab Dimmer Switch

This switch is used to alter the brightness of the instrument panel lights.

Peterbilt 579 (2021) Operator’s Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Using this Manual

Safety Alerts

Illustrations

General Safety Instructions

Data Recorder

Environmental Protection Agency

Repairs

Maintenance Manuals

Final Chassis Bill of Material

Additional Sources of Information

Cab Access

How to Lock and Unlock the Cab Doors

Remote Keyless Entry (Option)

Operate Door Locks using Remote Keyless Entry

How to Access the Upper Bunk

Upper Bunk Ladder

How to Unfold the Upper Bunk Ladder

How to Climb In and Out of the Upper Bunk

How to Fold the Upper Bunk Ladder

Deckplate Access

How to open the hood

Close the Hood

Under Hood Air Intake?

Seat

Passenger Seat Swivel (Option)

How to adjust a seat

Safety Restraint Belts

How to Use Lap/Shoulder Belt

Tether Belts

Komfort Latch Feature

Belt Damage and Repair

Sleeper Bunks and Restraints

What to do before starting the vehicle

Vehicle Loading

Daily Checks

Weekly Checks

Systems Check

Roadside Assistance

Low Air Alarm

Stop Engine Light

Low Oil Pressure

Engine is Overheating

How to Inspect and Replace a Fuse

Where are the Fuses Located?

How to Jump Start a Battery

How to Recover a Vehicle

Manually Release the Parking Brake

Recovery Hitch

How to use a Recovery Hitch

How to Prepare the Axles for Towing

How to Manually Lock a Differential

Recovery Hitch Capacities

Best Practices for Recovery Rigging

Returning to Service After Recovering

What to do if the Vehicle is Stuck in Sand, Mud, Snow or Ice

Towing the Vehicle

Instrument Cluster

Scroll Wheel

Back

Peterbilt Digital Display

Active Warnings

View Indicator

Drive, Neutral, and Reverse Indicator

Sub-trip Odometer

Trip Odometer

Driver Profile Indicator

Odometer

Engine Hours

Battery Voltage

Clock

Transmission Gear Display

Selecting a View

Minimized View

Speedometer and Tachometer

Minimized View with Driver Assistance (Option)

Adaptive Cruise Control Notification (option)