Mercedes ML 430, CLASS M, ML 55 AMG, ML 320 owners Manual

M-class

Operator’s Manual

ML 320
ML 430
ML 55 AMG

Our company and staff congratulate you on the purchase of your new Mercedes-Benz.

Your selection of our product is a demonstration of your trust in our company name. Further, it exemplifies your desire
to own an automobile that will be as easy as possible to operate and provide years of service.

Your Mercedes-Benz represents the efforts of many skilled engineers and craftsmen. To ensure your pleasure of
ownership, and for your safety and that of your passengers, we ask you to make a small investment of your time:

• Please read this manual carefully before putting it aside. Then return it to your vehicle where it will be handy for
your reference.

• Please abide by the recommendations contained in this manual. They are designed to acquaint you with the
operation of your Mercedes-Benz.

• Please abide by the warnings and cautions contained in this manual. They are designed to help improve the safety
of the vehicle operator and occupants.

We extend our best wishes for many miles of safe, pleasurable driving.

DaimlerChrysler AG

Introduction

Product information .......................... 7

Roadside assistance ......................... 10

Where to find it ................................ 14

Reporting Safety Defects ................ 16

Instruments and controls

Instruments and controls ............... 18

Center console ..............................20

Overhead control panel ...............21

Operation

Vehicle keys ......................................24

Start lock-out ....................................25

General notes on the

central locking system ...............26

Central locking system ...................26

Radio frequency

remote control ..............................26

Unlocking the liftgate ..................28

Panic button ..................................28

Mechanical keys ...........................29

Doors ................................................. 30

Central locking switch .................... 32

Automatic central locking .......... 32

Emergency unlocking in case

of accident ................................... 33

Liftgate .............................................. 34

Antitheft alarm system ................... 35

Tow-away alarm and

glass breakage sensor ............... 36

Seats, front ....................................... 37

Manual seats ................................ 39

Power seats ................................... 40

Head restraint ...............................41

Heated seats ..................................... 44

Seat belts and integrated

restraint system .......................... 46

Seat belts .......................................... 46

Seat belt nonusage

warning system ............................ 47

TM

BabySmart

airbag

deactivation system ................... 53

Self-test BabySmart

TM

without special child

seat installed ................................ 53

Supplemental restraint

system (SRS) ................................54

Emergency tensioning

retractor (ETR) .............................55

Airbags ..............................................56

Safety guidelines for the
seat belt, emergency
tensioning retractor

and airbag .....................................63

Infant and child

restraint systems ..........................65

Adjustable steering wheel ..............70

Inside rear view mirror .................. 71

Antiglare night position .............. 71

Exterior rear view mirrors .............73

Exterior rear view mirror,

electrically folding .......................75

Instrument cluster ........................... 76

Indicator lamps in the

instrument cluster ......................78

Trip computer ...................................83

Flexible service system (FSS) ........87

Engine oil level indicator ................89

Exterior lamp switch .......................90

1Contents

2Contents

Fog lamp switch

(except Canada) ...........................92

Fog lamp switch

(Canada only) ..............................93

Hazard warning flasher

switch ............................................94

Headlamp cleaning system ............94

Windshield wiper/washer

switch ............................................95

Rear window wiper/washer ...........96

Climate control ................................. 98

Basic setting – Heater ...............100

Basic setting –

Air conditioner ...........................100

Special setting ............................101

Dust filter ....................................102

Air recirculation .........................102

Rear window defroster ..............103

Power windows ...............................104

Rear quarter windows ................... 106

Sliding/pop-up roof .......................107

Skyview Top ....................................109

Interior lighting ..............................110

Sun visors ........................................113

Illuminated vanity mirrors ........... 113

Interior .............................................114

Storage compartments,

armrest and cup holder ............114

Glove box ......................................115

Armrest in rear bench seat ...........117

Ashtrays ........................................... 118

Lighter ..............................................119

Split rear seat bench ..................... 120

Easy entry/exit feature ............. 123

Rear seat head restraints ......... 124

Third row seats .............................. 126

Removable cargo floor plates ...... 129

Enlarged cargo area .......................131

Cargo tie-down rings .....................132

Hooks ...............................................133

Partition net ....................................133

Loading instructions ......................136

Cargo area cover blind ..................137

Telephone, general .........................139

Cellular telephone ..........................139

Garage door opener ....................... 140

Driving

Control and operation of

radio transmitters ..................... 146

The first 1 000 miles

(1 500 km) .................................147

Maintenance ...................................147

Tele Aid ........................................... 148

Catalytic converter ........................160

Emission control ............................ 161

Steering lock ...................................162

Starting and turning off

the engine ..................................164

Automatic transmission ...............165

Parking brake .................................173

Driving instructions ...................... 174

Drive sensibly – save fuel ......... 174

Drinking and driving ................. 174

Pedals ........................................... 174

Power assistance ........................175

Brakes ..........................................175

Driving off ................................... 176

Parking ........................................ 176

Tires .............................................177

Snow chains ................................179

Winter driving instructions ......180

Deep water .................................. 181

Passenger compartment ...........182

Traveling abroad ........................182

Off-Road driving .............................183

Trailer towing .................................190

Cruise control .................................196

Brake assist system (BAS) ............ 199

Antilock brake system (ABS) ....... 201

Four-wheel electronic

traction system (4-ETS+) ..........203

Electronic brake

proportioning (EBP) ..................204

Electronic stability program

(ESP) ...........................................205

Transmission control –

LOW RANGE mode ...................209

What you should know

at the gas station ....................... 212

Check regularly and

before a long trip ....................... 215

Instrument cluster display

Malfunction and indicator

lamps in the

instrument cluster .....................218

On-board diagnostic system –
Check engine malfunction

indicator lamp .............................218

Brake warning lamp ...................219

Supplemental restraint system

(SRS) indicator lamp ..................219

Fuel reserve warning ................220

Electronic stability
program (ESP) / Electronic
traction system (ETS) –

warning lamp ............................. 221

BAS/ESP malfunction

indicator lamp ............................ 221

4-ETS malfunction

indicator lamp ............................ 221

LOW RANGE

indicator lamp ............................ 221

ABS malfunction

indicator lamp ............................222

Adjustable steering wheel –

indicator lamp .............................222

AIRBAG OFF

indicator lamp .............................222

Seat belt warning lamp .............223

Charge indicator lamp ...............223

Low engine oil level

warning lamp ..............................224

Low engine coolant

level warning ..............................224

Brake pad wear

indicator lamp .............................225

FSS indicator ...............................225

3Contents

4Contents

Practical hints

First aid kit .....................................228

Fuses ................................................228

Electrical outlet ..............................230

Stowing things in the vehicle ......230

Hood .................................................231

Checking engine oil level .............233

Automatic transmission

fluid level ...................................234

Engine oil consumption ................234

Coolant level ...................................234

Adding coolant ...........................235

Windshield washer/headlamp

cleaning system .........................236

Windshield and
headlamp washer fluid

mixing ratio ................................237

Vehicle jack, wheel bolt

wrench and screwdriver ......... 237

Air pump ......................................... 239

Wheels ............................................ 240

Tire replacement .......................240

Rotating wheels ......................... 241

Spare wheel .................................... 242

Changing wheels ........................... 245

Tire inflation pressure ................. 250

Battery ............................................. 251

Jump starting .................................253

Towing the vehicle ........................ 255

Transmission selector lever,

manually unlocking .................. 259

Stranded vehicle ............................259

Exterior lamps ................................260

Headlamp assembly ................... 261

Taillamp assemblies ..................265

Adjusting headlamp aim ...............268

Remote control

battery replacement .................270

Synchronizing

remote control ............................271

Emergency operation of

sliding/pop-up roof ...................272

Emergency operation of

Skyview Top ...............................273

Manual release for

fuel filler flap .............................274

Replacing wiper blades .................275

Roof rack ......................................... 276

Vehicle care

Cleaning and care

of the vehicle .............................278

Power washer ..............................279

Tar stains .....................................279

Paintwork, painted body

components .................................279

Engine cleaning ..........................280

Vehicle washing .........................280

Ornamental moldings ................280

Headlamps, taillamps,

turn signal lenses ......................280

Window cleaning ........................ 281

Wiper blades ...............................281

Light alloy wheels ......................281

Instrument cluster ..................... 281

Steering wheel and

gear selector lever ......................281

Cup holder ..................................282

Seat belts .....................................282

Headliner ....................................282

Upholstery ..................................282

Hard plastic trim items ............. 282

Plastic and rubber parts ...........282

Technical data

Spare parts service ....................... 284

Warranty coverage ........................ 284

Identification labels ...................... 285

Layout of poly-V-belt drive ...........286

Technical data ................................287

Fuels, coolants, lubricants

etc. – capacities ........................292

Engine oils ......................................294

Engine oil additives ......................294

Air conditioner refrigerant ..........294

Brake fluid ......................................294

Premium unleaded gasoline ........295

Fuel requirements .........................295

Gasoline additives .........................296

Coolants ...........................................296

Consumer information ..................298

Index

Index ................................................300

5Contents

Product information

Kindly observe the following in your own best interest:

We recommend using Mercedes-Benz original parts as well as conversion parts and accessories
explicitly approved by us for your vehicle model.

We have tested these parts to determine their reliability, safety and their special
suitability for Mercedes-Benz vehicles.

We are unable to make an assessment for other products and therefore cannot be held responsible
for them, even if in individual cases an official approval or authorization by governmental or other
agencies should exist. Use of such parts and accessories could adversely affect the safety,
performance or reliability of your vehicle. Please do not use them.

Mercedes-Benz original parts as well as conversion parts and accessories approved by us are available
at your authorized Mercedes-Benz Light Truck Center where you will receive comprehensive information, also on
permissible technical modifications, and where proper installation will be performed.

7Introduction

8Introduction

Operator’s manual

This Operator’s Manual contains a great deal of useful information. We urge you to read it carefully and familiarize
yourself with the vehicle before driving.

For your own safety and longer service life of the vehicle, we urge you to follow the instructions and warnings
contained in this manual. Ignoring them could result in damage to the vehicle or personal injury to you or others.
Vehicle damage caused by failure to follow instructions is not covered by the Mercedes-Benz Limited Warranty.

Your vehicle may have some or all of the equipment described in this manual. Therefore, you may find explanations
for optional equipment not installed in your vehicle. If you have any questions about the operation of any equipment,
your authorized Mercedes-Benz Light Truck Center will be glad to demonstrate the proper procedures.

Service and warranty information

The Service and Warranty Information Booklet contains detailed information about the warranties covering your
Mercedes-Benz, including:

• New Light Truck Limited Warranty,

• Emission System Warranty,

• Emission Performance Warranty,

• California, Maine, Massachusetts, and Vermont Emission Control System Warranty

(California, Maine, Massachusetts, and Vermont only),

• State Warranty Enforcement Laws (Lemon Laws).

Important notice for California retail buyers of Mercedes-Benz automobiles

Under California law you may be entitled to a replacement of your vehicle or a refund of the purchase price, if
Mercedes-Benz USA, LLC or its authorized Mercedes-Benz Center fails to conform the vehicle to its express warranties
after a reasonable number of repair attempts during the period of one year or 12 000 miles from original delivery of
the vehicle. A reasonable number of repair attempts is presumed for a retail buyer (1) if the vehicle is out of service by
reason of repair of substantial nonconformities for a cumulative total of more than 30 calendar days or (2) the same
substantial non-conformity has been subject to repair four or more times and you have at least once directly

notified us in writing of the need to repair the non-conformity and have given us an opportunity to perform the
repair ourselves. Notifications should be sent to the nearest Mercedes-Benz Regional Office listed in the
Service and Warranty Information Booklet.

Maintenance

The Service Booklet describes all the necessary maintenance work which should be performed at regular intervals.

Always have the Service Booklet with you when you take the vehicle to your authorized Mercedes-Benz Light Truck
Center for service. The service advisor will record each service in the booklet for you.

9Introduction

10Introduction

Roadside assistance

The Mercedes-Benz Roadside Assistance Program provides factory trained technical help in the event of a breakdown.
Calls to the toll-free Roadside Assistance number:

1-800-FOR-MERCedes (in the USA)
1-800-387-0100 (in Canada)

will be answered by Mercedes-Benz Client Assistance Representatives 24 hours a day, 365 days a year.

Roadside assistance will be provided in accordance with standard program guidelines which include providing service
to the vehicle up to a reasonable distance from a paved roadway. We will make every effort to assist in a breakdown
situation, however, the accessibility of your vehicle will be determined by our authorized Mercedes-Benz Light Truck
Center technician or the tow service provider on a case by case basis and may be a factor in our ability to respond.

Additional charges may be applicable for a breakdown location determined not to be a reasonably accessible roadside
location as determined by our authorized technician and tow service provider.

For additional information refer to the Mercedes-Benz Roadside Assistance Program brochure in your glove box.

Change of address or ownership

If you change your address, be sure to send in the “Change of Address Notice” found in the Service and Warranty
Information Booklet, or simply call the Mercedes-Benz Client Assistance Center (in the USA) at
1-800-FOR-MERCedes, or Customer Service (in Canada) at 1-800-387-0100. It is in your own interest that we can
contact you should the need arise.

If you sell your Mercedes, please leave all literature with the vehicle to make it available to the next operator.

If you bought this vehicle used, be sure to send in the “Notice of Purchase of Used Car” found in the Service and
Warranty Information Booklet, or call the Mercedes-Benz Client Assistance Center (in the USA) at
1-800-FOR-MERCedes, or Customer Service (in Canada) at 1-800-387-0100.

Operating your vehicle outside the USA or Canada

If you plan to operate your vehicle in foreign countries, please be aware that:

• Service facilities or replacement parts may not be readily available,

• unleaded gasoline for vehicles with catalytic converters may not be available; the use of leaded fuels will damage

the catalysts,

• gasoline may have a considerably lower octane rating, and improper fuel can cause engine damage.

11Introduction

12Introduction

We continuously strive to improve our product, and ask for your understanding that we reserve the right to make
changes in design and equipment. Therefore, information, illustrations and descriptions in this Operator’s Manual
might differ from your vehicle.

Optional equipment is also described in this manual, including operating instructions wherever necessary. Since they
are special-order items, the descriptions and illustrations herein may vary slightly from the actual equipment of your
vehicle.

If there are any equipment details that are not shown or described in this Operator’s Manual, your authorized
Mercedes-Benz Light Truck Center will be glad to inform you of correct care and operating procedures.

The Operator’s Manual and Service Booklet are important documents and should be kept with the vehicle.

War ning!

This Sport Utility Vehicle is designed for both on-road and off-road use. It can go places and perform tasks for
which conventional 2-wheel drive passenger cars were not intended. This vehicle will handle and maneuver
differently from conventional passenger cars in driving conditions which may occur on streets, highways and
off-road use.

This vehicle has a higher ground clearance and a higher center of gravity than many passenger cars. As with
other vehicles of this type, if you make sharp turns at excessive speeds or abrupt maneuvers, the vehicle may
roll over or may go out of control and crash. Utility vehicles have a significantly higher rollover rate than
other types of vehicles. Failure to operate this vehicle safely may result in an accident, rollover of the vehicle,
and severe or fatal injury.

Before you start to drive this vehicle, read the Operator’s Manual. Take time to become familiar with the
driving characteristics of this vehicle. Be sure you are familiar with all vehicle controls. Learn how your
vehicle handles on different road surfaces. Do not attempt sharp turns at excessive speeds or abrupt
maneuvers or other unsafe driving actions that can cause loss of vehicle control. When driving off-road or
working the vehicle, do not overload it. And, always wear your seat belts at all times. In a rollover crash, an
unbelted person is significantly more likely to die than a person wearing a seat belt.

13Introduction

14Introduction

Where to find it

The Operator’s Manual is divided into eight sections:

• Instruments and controls: An overview of all the controls that can be operated from the driver’s seat.

•Operation: Information on the vehicle’s equipment and its operation.

•Driving: Important information on driving.

• Instrument cluster display: Indicator lamps on the instrument cluster with brief instructions.

• Practical hints: Assistance and instructions in the event of an emergency.

•Car care: Instructions on caring for your vehicle.

• Technical data: All the important technical data for your vehicle as well as consumer information such as fuels,

coolants, lubricants etc. is contained here.

•Index: Key terms to help you find a topic quickly.

Other documents may also be supplied, depending on your vehicle’s equipment.

Explanation of color used:

Warning notices for the protection of yourself and
others appear on red background.

Problems with your vehicle

If you should experience a problem with your vehicle, particularly one that you believe may affect
its safe operation, we urge you to immediately contact your authorized Mercedes-Benz Light Truck
Center to have the problem diagnosed and corrected if required. If the matter is not handled to
your satisfaction, please discuss the problem with the Mercedes-Benz Light Truck Center
management, or if necessary contact us at the following addresses:

In the USA: Client Assistance Center

Mercedes-Benz USA, LLC
One Mercedes Drive
Montvale, NJ 07645-0350

In Canada: Customer Relations Department

Mercedes-Benz Canada, Inc.
849 Eglinton Avenue East
Toronto, Ontario, M4G 2L5

15Introduction

16Introduction

For the USA only:
The following text is published as required of manufacturers under Title 49, Code of U.S. Federal Regulations,
Part 575 pursuant to the “National Traffic and Motor Vehicle Safety Act of 1966”.

Reporting Safety Defects

If you believe that your vehicle has a defect which could cause a crash or could cause injury or
death, you should immediately inform the National Highway Traffic Safety Administration
(NHTSA) in addition to notifying Mercedes-Benz USA, LLC.

If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety
defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA
cannot become involved in individual problems between you, your retailer, or
Mercedes-Benz USA, LLC.

To contact NHTSA, you may either call the Auto Safety Hotline toll-free at 1-800-424-9393
(or 366-0123 in Washington, D.C. area) or write to: NHTSA, U.S. Department of Transportation,
Washington, D.C. 20590. You can also obtain other information about motor vehicle safety from
the Hotline.

Instruments and controls

Instruments and controls ............... 18

Center console ..............................20

Overhead control panel ...............21

Instruments
and controls

Operation Driving

Instrument

cluster display

17Contents - Instruments and controls

Practical hints Car care Index

Technica l

data

Instruments
and controls

Operation Driving

Instruments and controls

Instrument

cluster display

Practical hints Car care Index

18Instruments and controls

Technica l

data

For more detailed descriptions see index on page 300.

For adjustment of air outlets, refer to climate control,
see page 98.

1 Cup holder, see page 114

2 Parking brake release, see page 173

3 Parking brake pedal, see page 173

4 Steering wheel adjustment lever, see page 70

5 Headlamp washer switch, see page 94

6 Exterior lamp switch, see page 90

7 Cruise control switch, see page 196

8 Instrument cluster, see page 76

9 Hazard warning flasher switch, see page 94

10 Horn (with key in steering lock position 1 or 2),

Driver airbag, see page 56

11 Steering lock with ignition/starter switch, see

page 162

12 Switch for exterior rear view mirrors, electrically

folding, see page 75

13 Windshield wiper/ washer switch, see page 95

14 Transmission control – LOW RANGE mode, see

page 209

15 Indicator lamp for antitheft alarm system

16 Auxiliary front fog lamp / rear fog lamp switch, see

page 92

17 MCS (Optional Modular Control System), see

separate operator’s manual

18 Front passenger airbag, see page 56

19 Glove box (illuminated with key in steering lock

position 1 or 2)

20 Cup holder, see page 114

21 Storage compartment

22 Air recirculation switch, see page 98

23 Air conditioner on /off switch, see page 98

24 Air volume control switch

25 Temperature selector switch

26 Air distribution switch

27 Electrical outlet, see page 230

Instruments
and controls

Operation Driving

Instrument

cluster display

19Instruments and controls

Practical hints Car care Index

Technica l

data

Instruments
and controls

Operation Driving

Instrument

cluster display

Practical hints Car care Index

Technica l

data

20Instruments and controls

Center console 1 Left front seat heater switch, see page 44

2 Switch for rear quarter window, left, see page 106

3 Switch for rear window washer/wiper, see page 96

4 ESP control switch, see page 207

5 Switch for rear quarter window, right, see page 106

6 Right front seat heater switch, see page 44

7 Storage compartment

8 Selector lever, see page 165

9 Ashtray with lighter, see page 118

10 Power window switch, left front door, see page 104

11 Central locking switch, see page 32

12 Rear window defroster switch, see page 103

13 Power window switch, right front door, see page 104

14 Power window switch, left rear door, see page 104

15 Mirror adjustment switch, see page 73

16 Power window safety switch, rear doors, see

page 104

17 Power window switch, right rear door, see page 104

Overhead control panel 1 Interior lighting, see page 110

2 Garage door opener, see page 140

3 Hands-free microphone for Tele Aid, telephone and

voice recognition system

4 Tele Aid (emergency call system), see page 148

5 Sliding/pop-up roof, see page 107

1

2

1

3

4

5

6

Skyview Top, see page 109

6 Rear view mirror, see page 71

Reading lamps inside rear view mirror, see page 110

Instruments
and controls

Operation Driving

Instrument

cluster display

21Instruments and controls

Practical hints Car care Index

Technica l

data

Instruments
and controls

Operation Driving

Instrument

cluster display

Practical hints Car care Index

Technica l

data

22Contents - Operation

Operation

Vehicle keys ......................................24

Start lock-out ....................................25

General notes on the

central locking system ...............26

Central locking system ...................26

Radio frequency

remote control ..............................26

Unlocking the liftgate ..................28

Panic button ..................................28

Mechanical keys ...........................29

Doors ..................................................30

Central locking switch ....................32

Automatic central locking ..........32

Emergency unlocking in case

of accident ....................................33

Liftgate ...............................................34

Antitheft alarm system ...................35

Tow-away a lar m and

glass breakage sensor ................36

Seats, front ........................................37

Manual seats .................................39

Power seats ...................................40

Head restraint ...............................41

Heated seats ..................................... 44

Seat belts and integrated

restraint system .......................... 46

Seat belts .......................................... 46

Seat belt nonusage

warning system ............................ 47

TM

BabySmart

airbag

deactivation system ................... 53

TM

Self-test BabySmart

without special child

seat installed ................................ 53

Supplemental restraint

system (SRS) ............................... 54

Emergency tensioning

retractor (ETR) ............................ 55

Airbags .............................................. 56

Safety guidelines for the

seat belt, emergency

tensioning retractor

and airbag ..................................... 63

Infant and child

restraint systems ......................... 65

Adjustable steering wheel .............. 70

Inside rear view mirror ...................71

Antiglare night position .............. 71

Exterior rear view mirrors .............73

Exterior rear view mirror,

electrically folding .......................75

Instrument cluster ........................... 76

Indicator lamps in the

instrument cluster ......................78

Trip computer ...................................83

Flexible service system (FSS) ........87

Engine oil level indicator ................89

Exterior lamp switch .......................90

Fog lamp switch

(except Canada) ..........................92

Fog lamp switch

(Canada only) ..............................93

Hazard warning flasher

switch ............................................94

Headlamp cleaning system ............94

Windshield wiper/washer

switch ............................................95

Rear window wiper/washer ...........96

Climate control .................................98

Basic setting – Heater ............... 100

Basic setting –

Air conditioner ...........................100

Special setting ............................101

Dust filter ....................................102

Air recirculation .........................102

Rear window defroster ..............103

Power windows ...............................104

Rear quarter windows ................... 106

Sliding/pop-up roof .......................107

Skyview Top ....................................109

Interior lighting ..............................110

Sun visors ........................................113

Illuminated vanity mirrors ........... 113

Interior .............................................114

Storage compartments,

armrest and cup holder ............114

Glove box ......................................115

Armrest in rear bench seat ...........117

Ashtrays ........................................... 118

Lighter ..............................................119

Split rear seat bench ..................... 120

Easy entry/exit feature ............. 123

Rear seat head restraints ......... 124

Third row seats .............................. 126

Removable cargo floor plates .......129

Enlarged cargo area ....................... 131

Cargo tie-down rings .....................132

Hooks ............................................... 133

Partition net ....................................133

Loading instructions .....................136

Cargo area cover blind ..................137

Telephone, general ........................139

Cellular telephone .........................139

Garage door opener ....................... 140

Instruments
and controls

Operation Driving

Instrument

cluster display

23Contents - Operation

Practical hints Car care Index

Technica l

data

Instruments
and controls

Operation Driving

Instrument

cluster display

Practical hints Car care Index

Technica l

data

24Central locking system

Vehicl e keys

Included with your vehicle are:

• 2 remote controls with folding master keys,

• 1 reserve key,

War ning!

When leaving the vehicle always remove the key
from the steering lock, and lock your vehicle. Do
not leave children unattended in the vehicle, or
with access to an unlocked vehicle. Unsupervised
use of vehicle equipment may cause serious
personal injury.

Remote control with folding master key

1

The remote control operates all locks on the vehicle.

To release the key, press button (1). The key unfolds
from the holder by itself.

The transmitter for the remote control is located in the
key ho lder.

Reserve key

The reserve key fits all locks on the vehicle.

For notes on the mechanical keys refer to page 29.

Note:

We recommend that you carry the reserve key with you
and keep it in a safe place (e.g. your wallet) so that it is
always handy. Never leave the reserve key in the
vehicle.

Obtaining replacement keys

Your vehicle is equipped with a theft deterrent locking
system requiring a special key manufacturing process.
For security reasons, replacement keys can only be
obtained from your authorized Mercedes-Benz Light
Truck Center.

Start lock-out

Important!

Removing the key from the steering lock activates the
start lock-out. The engine cannot be started.

Turning the key in the steering lock to position 2
deactivates the start lock-out.

Note:

In case the engine cannot be started and the
messages Á and î are shown in the odometer
display field, the system is not operational. Contact an
authorized Mercedes-Benz Light Truck Center or call
1-800-FOR-MERCedes (in the USA), or 1-800-387-0100
(in Canada).

Instruments
and controls

Operation Driving

Instrument

cluster display

25Central locking system

Practical hints Car care Index

Technica l

data

Instruments
and controls

Operation Driving

Instrument

cluster display

Practical hints Car care Index

Technica l

data

26Central locking system

General notes on the central locking system

If the key in the steering lock is in position 1 or 2, the
vehicle cannot be locked or unlocked with the remote
control.

If the vehicle cannot be locked or unlocked:

• Check the batteries of the remote control, see
page 270.

• Synchronize the remote control, see page 271.

Central locking system

(Radio frequency remote control)

The master key has an integrated radio frequency
remote control.

Due to the extended operational range of the remote
control, it could be possible to unintentionally lock or
unlock the vehicle by pressing the transmit button.

The vehicle doors, liftgate and fuel filler flap can be
centrally locked and unlocked via remote control.

With vehicle centrally locked, the liftgate can also be
unlocked by using the remote control.

If the key in the steering lock is in position 1 or 2, the
vehicle cannot be locked or unlocked with the remote
control.

1 Transmit button

‹ Locking

ΠUnlocking

Š Unlocking liftgate

2 PANIC button

3 Release button for master key

Locking and unlocking with remote control

Unlocking:

Press transmit button Πonce. All turn signal lamps
blink once to indicate that the driver’s door and fuel
filler flap are unlocked.

The antitheft alarm system is also deactivated.

Press transmit button Πa second time to unlock
remaining doors and liftgate.

Notes:

If the fuel filler flap cannot be opened, see page 274.

If within 40 seconds of unlocking with the remote
control, neither door nor liftgate is opened or the key is
not inserted in the steering lock, the vehicle will
automatically lock and reactivate the antitheft alarm
system.

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27Central locking system

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28Central locking system

Locking:

Press transmit button ‹ once. All turn signal lamps
blink three times to indicate that the vehicle is locked
and the antitheft alarm is activated.

Notes:

If the turn signal lamps do not blink three times when
locking the vehicle, a door, the liftgate, or the hood is
not properly closed. Close the respective element and
lock the vehicle again with the remote control.

If the vehicle cannot be locked or unlocked by pressing
the transmit button, then it may be necessary to change
the batteries in the remote control or to synchronize the
remote control, see page 270 and page 271.

Unlocking the liftgate

Press transmit button Š to unlock the liftgate. This
also deactivates the antitheft alarm.

Important!

A minimum height clearance of 7 ft. (2.15 m) is
required to open the liftgate.

Panic button

To activate press and hold button (1) for at least one
second. An audible alarm and blinking turn signal
lamps will operate for approximately 3 minutes.
Additionally the interior lights switch on automatically
for approximately 3 minutes.

To deactivate press button (1) again, or press transmit
button ‹, Œ or Š on the remote control, or
turn key in steering lock to position 1.

Note:

For operation in the USA only: This device complies
with Part 15, Subpart C, Section 209 of the FCC Rules.
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.

WARNING: Changes or modification not expressly
approved by party responsible for compliance could void
the users’s authority to operate the equipment.

Mechanical keys

The mechanical keys fit all locks on the vehicle.

Notes:

Use of the key does not operate the central locking
system or arm or disarm the antitheft alarm system.

The alarm sounds when unlocking the door. Cancel
alarm by turning key in steering lock to position 1, or
with the remote control by pressing button Œ.

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30Central locking system

1 Opening – pull handle

2 Unlocking driver’s door lock

3 Locking driver’s door lock

4 Individual door from inside:

Push lock button down to lock.
Pull lock button up to unlock.

5 Front door from inside:

Pull handle to unlock.

Important!

The mechanical key does not operate the central locking
system or arm or disarm the antitheft alarm system.

When you lock the driver’s door with the mechanical
key, the door lock button should move down.

Each individual door and the liftgate must be locked
with the respective door lock button – the driver’s door
can only be locked when it is closed.

Notes:

The alarm sounds when unlocking the driver’s door.
Cancel alarm by turning key in steering lock to
position 1, or with the remote control by pressing
button Œ.

If the vehicle has previously been locked from the
outside, only the door being opened from the inside will
unlock, and the alarm will come on. The remaining
doors, the liftgate and fuel filler flap remain locked.

In case of a malfunction in the central locking system
the doors can be locked and unlocked individually.

To lock, push down lock buttons and turn mechanical
key in driver’s door lock to position 3. In addition lock
the liftgate.

To unlock, pull inside door handles and turn mechanical
key in driver’s door lock to position 2.

Rear doors, previously centrally locked, can be opened
from inside by first unlocking the vehicle with the
central locking switch, see page 32, or by first pulling
up the door lock button.

If the fuel filler flap cannot be opened, see page 274.

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32Central locking system

Central locking switch

1 Locking

2 Unlock ing

The central locking switch is located on the center
console.

The doors and trunk can only be locked with the central
locking switch, if the front doors are closed.

If the vehicle was previously locked with the remote
control, the doors and liftgate cannot be unlocked with
the central locking switch.

Automatic central locking

The central locking switch also operates the automatic
central locking.

With the automatic central locking system activated and
the engine running, the doors and trunk are locked at
vehicle speeds of approximately 9 mph (15 km/h) or
more.

To activ a te:

With key in steering lock position 2 hold upper portion
of switch (1) for a minimum of 5 seconds.

To deactivate:

With key in steering lock position 2 hold lower portion
of switch (2) for a minimum of 5 seconds.

Notes:

If doors are unlocked with the central locking switch
after activating the automatic central locking, and
neither door is opened, then the doors remain unlocked
even at vehicle speeds of approximately 9 mph
(15 km/ h) or more.

If a door is opened from the inside at speeds of
approximately 9mph (15km/h) or less with the
automatic central locking activated, the door will again
be automatically locked at speeds of approximately
9 mph (15 km/ h) or more.

Important!

When towing the vehicle, or with the vehicle on a
dynamometer test stand, please, note the following:

With the engine running, the vehicle doors will lock if
the left front wheel spins at vehicle speeds of
approximately 9 mph (15 km/ h) or more.

To prevent vehicle door locks from locking, deactivate
the automatic central locking.

Emergency unlocking in case of accident

The doors unlock automatically a short time after an
accident in which an airbag or emergency tensioning
retractor deploys (this is intended to aid rescue and
exit). However, the key must still be in the steering lock
position 1 or 2.

Additionally the hazard warning flashers turn on
automatically and the interior lights switch on for
approximately 30 minutes.

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34Central locking system

1 Grip molding

2 Handle, outside

3 Recessed grip

To o pen:
From outside of vehicle, pull on handle (2).

To close:
Pull down on recessed grip (3), and close by using the
grip molding (1).

1 Handle, inside

2 Locking

3 Unlocking

Important!

In case of danger, the unlocked liftgate can be opened
with the inside or outside handle.

Only drive with the liftgate closed as otherwise exhaust
fumes may enter the vehicle interior.

Antitheft alarm system

The indicator lamp is located in the center console.

The antitheft alarm is automatically armed or disarmed
with the remote control by locking or unlocking the
vehicle.

The antitheft alarm is armed within approximately
15 seconds after locking the vehicle with the remote
control.

A blinking lamp in the center console indicates that the
alarm is armed.

Notes:

Use of the key in the front door locks does not arm or
disarm the antitheft alarm system.

The alarm sounds when unlocking the driver’s door
with the mechanical key. Cancel alarm by turning key in
steering lock to position 1, or with the remote control by
pressing button Œ.

If the vehicle battery voltage falls below 10 volts, the
alarm is automatically canceled and the antitheft alarm
system is disarmed. When the voltage is above this
value again, the antitheft alarm system is armed again.

Operation:

Once the alarm system has been armed, the turn signal
lamps will flash rapidly (approximately 3 minutes) and
the horn will sound intermittently (approximately
30 seconds) when someone:

• opens a door,

• opens the liftgate,

• opens the hood,

• breaks a window,

• attempts to raise the vehicle.

The alarm will stay on even if the activating element (a
door, for example) is immediately closed.

If the alarm stays on for more than 20 seconds, an
emergency call is initiated automatically. See Tele Aid
on page 148.

Note:

The alarm system will cycle three times when triggered.

The interior lights are automatically switched on when
the alarm comes on and go out when canceling the
alarm.

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36Tow-away protection

Tow-away alarm and glass breakage sensor

The switch is located in the overhead console.

The tow-away alarm and glass breakage sensor are part
of the antitheft alarm system.

Once the alarm system has been armed, the turn signal
lamps will flash rapidly and the horn will sound when
someone attempts to raise the vehicle, or breaks a
window and reaches into the passenger compartment.

The alarm will last approximately 3 minutes in the form
of rapidly flashing turn signal lamps. At the same time
the horn will sound for approximately 30 seconds. The
alarm will stay on even if the vehicle is immediately
lowered.

If the alarm stays on for more than 20 seconds, an
emergency call is initiated automatically. See Tele Aid
on page 148.

To prevent triggering the tow-away alarm feature, switch
off the tow-away alarm and glass breakage sensor before
towing the vehicle, or when parking on a surface subject
to movement, such as a ferry or auto train.

To do so, turn key in steering lock to position 1, then
return it to position 0 and remove key from steering
lock.

Within 30 seconds, push left or right button. (On
vehicles equipped with optional trip computer, push
RESET or MODE button, display shows OFF.)

Exit vehicle, and lock vehicle with remote control.

The tow-away alarm and glass breakage sensor remain
switched off until the key is inserted in steering lock
and turned to position 1.

Seats, front

War ning!

Do not adjust the driver’s seat while driving.
Adjusting the seat while driving could cause the
driver to lose control of the vehicle.

Never ride in a moving vehicle with the backrest
reclined. Sitting in an excessively reclined position
can be dangerous. You could slide under the seat
belt in a collision. If you slide under it, the belt
would apply force at the abdomen or neck. That
could cause serious or even fatal injuries. The
backrest and seat belt provide the best restraint
when the wearer is in an upright position and the
belt is properly positioned on the body.

Never place hands under seat or near any moving
parts while a seat is being adjusted.

Warn ing!

When leaving the vehicle always remove the key
from the steering lock, and lock your vehicle.

Do not leave children unattended in the vehicle or
with access to an unlocked vehicle. Unsupervised
use of vehicle equipment may cause serious
personal injury.

Caution!

Do not remove head restraints except when mounting
seat covers. For removal see page 43. Whenever head
restraints have been removed be sure to reinstall them
before driving.

37Seats

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38Seats

Important!

Prior to operating the vehicle, the driver should adjust
the seat height for proper vision as well as fore/aft
placement and backrest angle to insure adequate
control, reach, operation, and comfort. The head
restraint should also be adjusted for proper height. See
also airbag section on page 56 for proper seat
positioning.

In addition, also adjust the steering wheel to ensure
adequate control, reach, operation, and comfort.

Both the inside and outside rear view mirrors should be
adjusted for adequate rearward vision.

Fasten seat belts. Infants and small children should be
seated in a properly secured restraint system that
complies with U.S. Federal Motor Vehicle Safety
Standard 213 and Canadian Motor Vehicle Safety
Standard 213.

All seat, head restraint, steering wheel, and rear view
mirror adjustments as well as fastening of seat belts
should be done before the vehicle is put into motion.

Warn ing!

Children 12 years old and under must never ride in
the front seat, except in a Mercedes-Benz
authorized BabySmart

TM

compatible child seat,
which operates with the BabySmartTM system
installed in the vehicle to deactivate the passenger
side front airbag when it is properly installed.
Otherwise they will be struck by the airbag when it
inflates in a crash. If this happens, serious or fatal
injury can result.

According to accident statistics, children are safer
when properly restrained in the rear seating
positions than in the front seating positions.
Infants and small children must ride in the back
seats and be seated in an appropriate infant or
child restraint system, which is properly secured
with the vehicle’s seat belt, fully in accordance
with the child seat manufacturer’s instructions.

A child’s risk of serious or fatal injuries is
significantly increased if the child restraints are
not properly secured in the vehicle and the child is
not properly secured in the child restraint.

Manual seats (ML 320)

We recommend to adjust the manual seat in the
following order:

1 Seat, fore/ aft

Lift handle (1), slide seat to desired position and
allow handle to reengage. Check for proper
engagement before driving. The position should be
as far rearward as possible, consistent with ability to
properly operate controls.

2 Seat cushion inclination adjustment

Raise lever (2), move seat cushion to desired
position. Release lever.

3 Backrest adjustment

Turn handwheel (3).

4 Head restraint height

Raising:
Pull up on head restraint.

Lowering:
Push button (4), located at top of seat back, and
push down on head restraint.

Adjust head restraint to support the back of the head
approximately at ear level. The head restraint angle
can also be adjusted manually.

See page 43 for removing head restraints.

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40Seats

Power seats (standard; optional on model ML 320)

The slide switches are located on the entry side of each
front seat base.

Turn key in steering lock to position 1 or 2 (with the
driver’s or passenger’s door open, the power seats can
also be operated with the key removed or in steering
lock position 0).

We recommend to adjust the power seat in the following
order:

1 Seat, up/down

Press the switch (up/down direction) until
comfortable seating position with still sufficient
headroom is reached.

2 Seat adjustment, fore/ aft

Press the switch (fore/aft direction) until a
comfortable seating position is reached that still
allows you to reach the accelerator /brake pedal
safely. The position should be as far rearward as
possible, consistent with ability to properly operate
controls.

3 Seat cushion tilt

Press the switch in the direction of the arrow until
your legs are lightly supported.

4 Backrest tilt

Press the switch in the direction of the arrow until
your arms are slightly angled when holding the
steering wheel.

Only minor personal adjustments, as described below,
should then be required.
For exterior rear view mirrors, see page 73;
inside rear view mirror, see page 71;
steering wheel adjustment, see page 70.

Note:

See page 42 for instructions on storing and recalling the
seat position.

War ning!

When leaving the vehicle always remove the key
from the steering lock, and lock your vehicle.

The power seats can also be operated with the
driver’s or passenger door open. Do not leave
children unattended in the vehicle or with access
to an unlocked vehicle. Unsupervised use of vehicle
equipment may cause serious personal injury.

Head restraint

Raising:
Pull up on head restraint.

Lowering:
Push button, located at top of seat back, and push down
on head restraint, see also page 43.

Adjust head restraint to support the back of the head
approximately at ear level. The head restraint angle can
also be adjusted manually.

See page 43 for removing head restraints.

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42Seats

Memory storing and recalling

(optional on model ML 320 and ML 430)

5 Memory button

6 Position buttons

Storing

Three sets of seat positions may be programmed into
memory. After the seat is positioned, push memory
button (5), release, and within 3 seconds push position
button “1”. A second and third set of positions for the
same seat can be programmed into memory by pushing
first memory button (5) and then position button “2”,
respectively “3”.

Recalling

To recall a seat position, push and hold one of the
position buttons “1”, “2” or “3” until seat movement has
stopped. The seat movement stops when the respective
position button is released.

Caution!

Do not operate the power seats using the memory
button if the seat backrest is in an excessively reclined
position. Doing so could cause damage to front or rear
seats.

First move the backrest to an upright position.

Head restraint removal

Removal:

Pull head restraint to its highest position. Push lock
button (arrow) and pull out head restraint completely
with both hands.

Installation:

Insert the head restraint and push it down to the stop.

Push lock button (arrow) and adjust head restraint down
to the desired position.

Ensure proper head restraint positioning, see above.

Warn ing!

For your protection, drive only with properly
positioned head restraints.

Adjust head restraint to support the back of the
head approximately at ear level.

Do not drive the vehicle without the seat head
restraints. Head restraints are intended to help
reduce injuries during an accident.

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44Seats

Heated seats (front, optional on ML 320)

1

2

P54.25-2036-26

The front seat heater switches are located on the center
console.

The front seat heaters can be switched on with the
engine running.

Press switch to turn on seat heater:

1 Normal seat heating mode. One indicator lamp in

the switch lights up.

2 Rapid seat heating mode. Both indicator lamps in

the switch light up.

After approximately 5 minutes in the rapid seat
heating mode, the seat heater automatically
switches to normal operation and only one indicator
lamp will stay on.

Turning off seat heater:

If one indicator lamp is on, press upper half of switch.

If both indicator lamps are on, press lower half of
switch.

If left on, the seat heater automatically turns off after
approximately 20 minutes of operation.

Notes:

When in operation, the seat heater consumes a large
amount of electrical power. It is not advisable to use the
seat heater longer than necessary.

The seat heaters may automatically switch off if too
many power consumers are switched on at the same
time, or if the battery charge is low. When this occurs,
the indicator lamps in the switch will blink for
approximately 30 seconds.

Within this time the seat heaters will switch on again
automatically as soon as sufficient voltage is available.
After approximately 30 seconds without sufficient
voltage the seat heaters switch off (indicator lamps go
out).

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46Restraint systems

Seat belts and integrated restraint system

Your vehicle is equipped with seat belts for all seats,
emergency tensioning retractors for front and second
row outboard seat belts, dual front airbags and door
mounted side impact airbags. Their protective functions
are designed to complement one another.

Seat belts

Important!

Laws in most states and all Canadian provinces require
seat belt use.

All states and provinces require use of child restraints
that comply with U.S. Federal Motor Vehicle Safety
Standard 213 and Canadian Motor Vehicle Safety
Standard 213.

All child restraint systems are designed to be secured in
vehicle seats by lap belts or the lap belt portion of a lap­shoulder belt.

For your safety and that of your passengers we strongly
recommend their use.

Warn ing!

Children 12 years old and under must never ride in
the front seat, except in a Mercedes-Benz
authorized BabySmart

TM

compatible child seat,
which operates with the BabySmartTM system
installed in the vehicle to deactivate the passenger
side front airbag when it is properly installed.
Otherwise they will be struck by the airbag when it
inflates in a crash. If this happens, serious or fatal
injury will result.

According to accident statistics, children are safer
when properly restrained in the rear seating
positions than in the front seating positions.
Infants and small children must ride in back seats
and be seated in an appropriate infant or child
restraint system, which is properly secured with
the vehicle’s seat belt, fully in accordance with the
child seat manufacturer’s instructions.

A child’s risk of serious or fatal injuries is
significantly increased if the child restraints are
not properly secured in the vehicle and the child is
not properly secured in the child restraint.

War ning!

Never ride in a moving vehicle with the backrest
reclined. Sitting in an excessively reclined position
can be dangerous. You could slide under the seat
belt in a collision. If you slide under it, the belt
would apply force at the abdomen or neck. That
could cause serious or even fatal injuries. The
backrest and seat belt provide the best restraint
when the wearer is in an upright position and the
belt is properly positioned on the body.

Note:

For cleaning and care of the seat belts, see page 282.

Seat belt nonusage warning system

After starting the engine, a warning sounds and the seat
belt warning lamp < remains illuminated for a short
time if the driver’s seat belt is not fastened.

Warn ing!

Failure to wear and properly fasten and position
your seat belt greatly increases your risk of
injuries and their likely severity in an accident.
You and your passengers should always wear seat
belts.

If you are ever in an accident, your injuries can be
considerably more severe without your seat belt
properly buckled. Without your seat belt buckled,
you are much more likely to hit the interior of the
vehicle or be ejected from it. You can be seriously
injured or killed.

In the same crash, the possibility for injury or
death is lessened if you are wearing your seat belt.

Warn ing!

Never let more people ride in the vehicle than there
are seat belts available. Be sure everyone riding in
the vehicle is correctly restrained with a separate
seat belt.

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48Restraint systems

Fastening of seat belts

1 Latch plate

2 Buckle

3 Release button

Push latch plate (1) into buckle (2) until it clicks. Do not
twist the belt. A twisted seat belt may cause injury.

To help avoid severe or fatal injuries, the lap belt must
be positioned as low as possible on your hips and not
across the abdomen.

Warn ing!

Always fasten your seat belt before driving off.
Always make sure your passengers are properly
restrained – even those sitting in the rear.

Tighten the lap portion to a snug fit by pulling shoulder
portion up.

The shoulder portion of the seat belt must be pulled
snug and checked for snugness immediately after
engaging it.

Adjust seat belt so that shoulder portion is located as
close as possible to the middle of your shoulder (it
should not touch the neck). For this purpose, you can
adjust the height of the belt outlet. Three positions are
available.

4 Button for belt outlet height adjustment

To raise, slide belt height adjustment upward.

To lower, press button (4) and slide belt outlet
downward.

Caution!

For safety reasons, avoid adjusting the seat or backrest
into positions which could affect the correct seat belt
positioning.

49Restraint systems

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Operation

The inertia reel stops the belt from unwinding during
sudden vehicle stops or when quickly pulling on the
belt. The locking function of the reel may be checked by
quickly pulling out the belt.

Unfastening of seat belts

Push the release button (3) in the belt buckle (2).

Allow the retractor to completely rewind the seat belt by
guiding the latch plate (1).

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Warn ing!

USE SEAT BELTS PROPERLY.

• Seat belts can only work when used properly.
Never wear seat belts in any other way than as
described in this section, as that could result
in serious injuries in case of an accident.

• Each occupant should wear their seat belt at all
times, because seat belts help reduce the
likelihood of and potential severity of injuries
in accidents, including rollovers. The
integrated restraint system includes “SRS”
(driver airbag, front passenger airbag, front
and rear door mounted side impact airbags),
“ETR” (seat belt emergency tensioning
retractors for the outboard passenger seats
[except in the optional 3rd row seats]), and
front seat knee bolsters. The system is
designed to enhance the protection offered to
properly belted occupants in certain frontal
(front airbags) and side (side impact airbags)
impacts which exceed preset deployment
thresholds.

• Never wear the shoulder belt under your arm,
against your neck or off your shoulder. In a
crash, your body would move too far forward.
That would increase the chance of head and
neck injuries. The belt would also apply too
much force to the ribs or abdomen, which
could severely injure internal organs such as
your liver or spleen.

• Never wear belts over rigid or breakable
objects in or on your clothing, such as
eyeglasses, pens, keys etc., as these might
cause injuries.

• Position the lap belt as low as possible on your
hips and not across the abdomen. If the belt is
positioned across your abdomen, it could cause
serious injuries in a crash.

• Each seat belt should never be used for more
than one person at a time. Do not fasten a seat
belt around a person and another person or
other objects.

• Belts should not be worn twisted. In a crash,
you wouldn’t have the full width of the belt to
manage impact forces. The twisted belt against
your body could cause injuries.

• Pregnant women should also use a lap­shoulder belt. The lap belt portion should be
positioned as low as possible on the hips to
avoid any possible pressure on the abdomen.

• Never place your feet on the instrument panel
or on the seat. Always keep both feet on the
floor in front of the seat.

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52Restraint systems

War ning!

USE CHILD RESTRAINTS PROPERLY.

Children 12 years old and under must never ride in
the front seat, except in a Mercedes-Benz
authorized BabySmart
which operates with the BabySmart

TM

compatible child seat,

TM

system
installed in the vehicle to deactivate the passenger
front airbag when it is properly installed.
Otherwise they will be struck by the airbag when it
inflates in a crash. If this happens, serious or fatal
injury will result.

According to accident statistics, children are safer
when properly restrained in the rear seating
positions than in the front seating positions.
Infants and small children must ride in back seats
and be seated in an appropriate infant or child
restraint system, which is properly secured with
the vehicle’s seat belt, fully in accordance with the
child seat manufacturer’s instructions.

A child’s risk of serious or fatal injuries is
significantly increased if the child restraints are
not properly secured in the vehicle and the child is
not properly secured in the child restraint.

Children too big for child restraint systems must
ride in back seats using regular seat belts. Position
shoulder belt across chest and shoulder, not face or
neck. A booster seat may be necessary to achieve
proper belt positioning.

TM

BabySmart

Special BabySmart

airbag deactivation system

TM

compatible child seats, designed
for use with the Mercedes-Benz system and available at
any authorized Mercedes-Benz Center are required for
use with the BabySmart

TM

airbag deactivation system.

With the special child seat properly installed, the
passenger front airbag will not deploy. The 7
indicator lamp located in the instrument cluster will be
illuminated, except with key removed or in steering lock
position 0. The system does not deactivate the door
mounted side impact airbag.

War ning!

TM

The BabySmart

Airbag Deactivation System will
ONLY work with a special child seat designed to
operate with it. It will not work with child seats
which are not BabySmart

TM

compatible.

Never place anything between seat cushion and
child seat (e.g. pillow), since it reduces the
effectiveness of the deactivation system.

Follow the manufacturer’s instructions for
installation of special child seats.

The passenger side front airbag will not deploy
only if the 7 indicator lamp remains
illuminated.

Please be sure to check the indicator every time
you use the special system child seat.

Should the light go out while the restraint is
installed, please check installation. If the light
remains out, do not use the BabySmart

TM

restraint
to transport children on the front passenger seat
until the system has been repaired.

TM

Self-test BabySmart
without special child seat installed

After turning key in steering lock to position 1 or 2, the
7 indicator lamp located in the instrument cluster
comes on for approximately 6 seconds, extinguishes,
then blinks once.

If the indicator lamp should not come on or is
continuously lit, the system is not functioning. You must
see an authorized Mercedes-Benz Center before seating
any child on the front passenger seat.

BabySmartTM is a trademark of Siemens Automotive Corp.

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Supplemental restraint system (SRS)

Airbags are intended as a supplement to seat belts.
Airbags alone cannot protect as well as airbags plus
seat belts in impacts for which the airbags were
designed to operate, and do not afford any protection
whatsoever in crashes for which the airbags are not
designed to deploy.

The SRS uses two crash severity levels (thresholds) to
activate either the Emergency Tensioning Retractor
(ETR) or front airbag or both. Activation depends on the
direction and severity of the impact exceeding the
preset thresholds and whether the seat belt is fastened.

Seat belt fastened

• first threshold exceeded: ETR activates

• second threshold exceeded: airbag also activates

Seat belt not fastened

Front seats:

• first threshold exceeded:
airbag activates, but not ETR

Rear outer seats:

• first threshold exceeded:
ETR activates

Driver, front passenger and rear outer seat systems
operate independently of each other.

Emergency tensioning retractor (ETR)

The seat belts for the outboard passenger seats (except
in the optional 3rd row seats) are equipped with
emergency tensioning retractors. These tensioning
retractors are located in each belt’s inertia reel and
become operationally ready with the key in steering
lock position 1 or 2.

The emergency tensioning retractors are designed to
activate only when the seat belts are fastened during
frontal impacts exceeding the first threshold of the SRS
and in rear impacts exceeding a preset severity level.
They remove slack from the belts in such a way that the
seat belts fit more snugly against the body restricting its
forward movement as much as possible.

In cases of other frontal impacts, angled impacts, roll­overs, certain side impacts, or other accidents without
sufficient frontal or rear impact forces, the emergency
tensioning retractors will not be activated. The driver
and passengers will then be protected by the fastened
seat belts and inertia reel in the usual manner.

For seat belt and emergency tensioning retractor see
page 63.

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1 Driver airbag

The most effective occupant restraint system yet
developed for use in production vehicles is the seat belt.
In some cases, however, the protective effect of a seat
belt can be further enhanced by an airbag.

The driver airbag is located in the steering wheel hub.

2 Front passenger airbag

The passenger front airbag is located in the dashboard
ahead of the front passenger.

3

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3 Side impact airbag, front

The side impact airbags are located in the front and rear
doors.

In conjunction with wearing the seat belts, the driver
and front passenger airbags can provide increased
protection for the driver and front passenger in certain
frontal impacts exceeding preset thresholds.

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4 Side impact airbag, rear

Door mounted side impact airbags can provide
increased protection to belted outboard occupants on
the impacted side of the vehicle in side impacts
exceeding its preset threshold.

Important!

The operational readiness of the airbag system is
verified by the indicator lamp “SRS” in the instrument
cluster when turning the key in steering lock to
position 1 or 2. If no fault is detected, the lamp will go

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out after approximately 5 seconds; after the lamp goes
out, the system continues to monitor the components
and circuitry of the airbag system and will indicate a
malfunction by coming on again. If the lamp does not
come on at all or if it fails to extinguish after
approximately 5 seconds or if it comes on thereafter,
a malfunction in the system has been detected.

The following system components are monitored or
undergo a self-check: crash-sensor(s), airbag ignition
circuits, front seat belt buckles, emergency tensioning
retractors, seat sensor.

Initially, when the key is turned from steering lock
position 0 to positions 1 or 2, malfunctions in the
crash-sensor are detected and indicated (the “SRS”
indicator lamp stays on longer than 5 seconds or does
not come on).

Have the system checked at your authorized
Mercedes-Benz Light Truck Center immediately.

In the operational mode, after the indicator lamp has
gone out following the initial check, interruptions or
short circuits in the airbag ignition circuit and in the
driver and front passenger seat belt buckle harnesses,
and low voltage in the entire system are detected and
indicated.

Warn ing!

In the event a malfunction of the “SRS” is indicated
as outlined above, the “SRS” may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Light Truck Center immediately to
have the system checked; otherwise the “SRS” may
not be activated when needed in an accident, which
could result in serious or fatal injury, or it might
deploy unexpectedly and unnecessarily which
could also result in injury.

Front airbags

The driver and front passenger front airbags are
designed to activate only in certain frontal impacts
exceeding a preset threshold.

The front passenger airbag deploys only if the front
passenger seat is occupied and the ü indicator lamp
in the instrument cluster is not illuminated.

Note:

Heavy objects on the front passenger seat can appear to
the “SRS” to indicate the presence of an occupant in
that seat which causes the passenger front airbag to
deploy in a crash exceeding the appropriate threshold.

Side impact airbags

The side impact airbags are designed to activate only in
certain side impacts exceeding a preset threshold. Only
the side impact airbags on the impacted side of the
vehicle deploy.

The side impact airbag for the front passenger deploys
only if the front passenger seat is occupied.

Side impact airbags operate best in conjunction with a
properly positioned and fastened seat belt.

Note:

Heavy objects on front passenger seat can cause the
side impact airbag to deploy in a crash.

Important!

Airbags are designed to activate only in certain
frontal (front airbags) impacts, or side (side impact
airbags) impacts which exceed preset thresholds.

Only during these types of impacts, if of sufficient
severity to meet the deployment thresholds, will
they provide their supplemental protection.

The driver and passenger should always wear their
seat belts, otherwise it is not possible for the airbags
to provide their intended supplemental protection.

In cases of other frontal impacts, angled impacts,
roll-overs, other side impacts, rear collisions, or
other accidents in which the airbags are not
designed to deploy, the airbags will not be activated.
The driver and passenger will then be protected by
the fastened seat belts.

We caution you not to rely on the presence of the
airbags in order to avoid wearing your seat belt.

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War ning!

Airbags are designed to reduce the potential of
injury in certain frontal (front airbags) impacts,
and side (side impact airbags) impacts which may
cause significant injuries, however, no system
available today can totally eliminate injuries and
fatalities.

The activation of the “SRS” temporarily releases a
small amount of dust from the airbags. This dust,
however, is neither injurious to your health, nor
does it indicate a fire in the vehicle. The dust might
cause some temporary breathing difficulty for
people with asthma or other breathing trouble. To
avoid this, you may wish to get out of the vehicle as
soon as it is safe to do so. If you have any breathing
difficulty but cannot get out of the vehicle after the
airbag inflates, then get fresh air by opening a
window or door.

Your vehicle was originally equipped with airbags
which are designed to activate in certain impacts
exceeding a preset threshold to reduce the potential
and severity of injury. It is important to your safety
and that of your passenger that you replace deployed
airbags and repair any malfunctioning airbags to
ensure the vehicle will continue to provide crash
protection for occupants.

Warn ing!

To reduce the risk of injury when the front airbags
inflate, it is very important for the driver and front
passenger to always be in a properly seated
position and to wear their seat belts.

For maximum protection in the event of a collision
always be in normal seated position with your back
against the backrest. Fasten your seat belt and
ensure that it is properly positioned on your body.

Since the airbag inflates with considerable speed
and force, a proper seating and hands on steering
wheel position will help to keep you at a safe
distance from the airbag. Occupants who are
unbelted, out of position or too close to the airbag
can be seriously injured by an airbag as it inflates
with great force in the blink of an eye:

• Sit properly belted in an upright position with
your back against the backrest.

• Adjust the driver’s seat as far as possible
rearward, still permitting proper operation of
vehicle controls. The distance from the center
of the driver’s breastbone to the center of the
airbag cover on the steering wheel must be at
least ten inches (25 cm) or more. You should be
able to accomplish this by a combination of
adjustments to the seat and steering wheel. If
you have any problems, please see your
authorized Mercedes-Benz Light Truck Center.

• Do not lean with your head or chest close to the
steering wheel or dashboard.

• Keep hands on the outside of steering wheel
rim. Placing hands and arms inside the rim
can increase the risk and potential severity of
hand/arm injury when the driver front airbag
inflates.

• Adjust the front passenger seat as far as
possible rearward from the dashboard when
the seat is occupied.

• Occupants, especially children, should never
lean their heads in the area of the door where
the side airbag inflates. This could result in
serious injuries or death should the airbag be
triggered. Always sit upright, properly use the
seatbelts and appropriate size infant or child
restraint system.

• Children 12 years old and under must never
ride in the front seat, except in a
Mercedes-Benz authorized BabySmart
compatible child seat, which operates with the
BabySmart

TM

system installed in the vehicle to

TM

deactivate the passenger side front airbag
when it is properly installed. Otherwise they
will be struck by the airbag when it inflates in
a crash. If this happens, serious or fatal injury
can result.

Failure to follow these instructions can result in
severe or fatal injuries to you or other occupants.

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War ning!

Accident research shows that the safest place for
children in an automobile is in the rear seat.
Should you choose to place a child 12 years old or
under in the front passenger seat of your vehicle,
you must properly use a BabySmart
restraint which will turn off the passenger side
front airbag. BabySmart

TM

will not, however, turn

TM

child

off the vehicle’s side impact airbag.

It should be noted that with respect to both front
and rear side impact airbags there is a possibility
for a side airbag related injury if occupants,
especially children, are not properly seated or
restrained when next to a side airbag which needs
to deploy rapidly in a side impact in order to do its
job.

To help avoid the possibility of injury, please follow
these guidelines: (1) occupants, especially
children, should never place their bodies or lean
their heads in the area of the door where the side
airbag inflates. This could result in serious
injuries or death should the side airbag be
activated; (2) always sit upright, properly use the
seat belts and use an appropriately sized infant or
child restraint system for all children 12 years old
or under; and (3) always wear seat belts properly.

If you believe that, even with the use of these
guidelines, it would be safer for your rear seat
occupants to have both rear door mounted side
airbags deactivated, then deactivation can be
accomplished upon your written election to do so at
your authorized Mercedes-Benz Center at an
additional cost. Please contact your local
authorized Mercedes-Benz Center or call our Client
Assistance Center at 1-800-FOR-MERCedes
(1-800-367-6372) for details.

Safety guidelines for the seat belt,
emergency tensioning retractor and airbag

War ning!

• Damaged seat belts or belts that were highly
stressed in an accident must be replaced and
their anchoring points must also be checked.
Use only belts installed or supplied by an
authorized Mercedes-Benz Light Truck Center.

• Do not pass belts over sharp edges.

• Do not make any modification that could
change the effectiveness of the belts.

• Airbags and ETR’s are designed to function on
a one-time-only basis. An airbag or emergency
tensioning retractor (ETR) that was activated
must be replaced.

• An airbag system component within the
steering wheel gets hot after the airbag has
inflated. Do not touch.

• Improper work on the system, including
incorrect installation and removal, can lead to
possible injury through an unintended
activation of the “SRS”.

• No modifications of any kind may be made to
any components or wiring of the “SRS”. This
includes changing or removing any component
or part of the “SRS”, the installation of
additional trim material, badges etc. over the
steering wheel hub, front passenger airbag
cover, or front door trim panels, and
installation of additional electrical/ electronic
equipment on or near “SRS” components and
wiring. Keep area between airbags and
occupants free of objects (e.g. packages,
purses, umbrellas, etc.).

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• In addition, through improper work there is
the risk of rendering the “SRS” inoperative or
causing unintended airbag deployment. Work
on the “SRS” must therefore only be performed
by an authorized Mercedes-Benz Light Truck
Center.

• For your protection and the protection of
others, when scrapping the airbag unit or
emergency tensioning retractor, our safety
instructions must be followed. These
instructions are available at your authorized
Mercedes-Benz Light Truck Center.

• Given the considerable deployment speed and
the textile structure of the airbags, there is the
possibility of abrasions or other injuries
resulting from airbag deployment.

When you sell the vehicle we strongly urge you to give
notice to the subsequent owner that it is equipped with
an “SRS” by alerting him to the applicable section in the
Operator’s Manual.

Infant and child restraint systems

We recommend tha t all infants and children be properly
restrained at all times while the vehicle is in motion. All
lap-shoulder belts except the driver’s seat belt have
special seat belt retractors for secure fastening of child
restraints.

To fasten a child restraint follow child restraint
instructions for routing. Then pull shoulder belt out
completely and let it retract. During the seat belt
retraction a ratcheting sound can be heard to indicate
that the special seat belt retractor is activated. The belt
is now locked. Push down on child restraint to take up
any slack.

To deactivate, release seat belt buckle and let seat belt
retract completely. The seat belt can again be used in
the usual manner.

Note:

For child seats with mounting fittings for tether
anchorages refer to page 67 (installation of infant and
child restraint systems).

Warn ing!

Never release the seat belt buckle while vehicle is
in motion, since the special seat belt retractor will
be deactivated.

Important!

The use of infant or child restraints is required by law in
all 50 states and all Canadian provinces.

Infants and small children should be seated in an
appropriate infant or child restraint system properly
secured by a lap-shoulder belt, and that complies with
U.S. Federal Motor Vehicle Safety Standard 213 and
Canadian Motor Vehicle Safety Standard 213.
A statement by the child restraint manufacturer of
compliance with this standard can be found on the
instruction label on the restraint and in the instruction
manual provided with the restraint.

When using any infant or child restraint system, be sure
to carefully read and follow all manufacturer’s
instructions for installation and use.

Please read and observe warning labels affixed to inside
of vehicle and to infant or child restraints.

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War ning!

Children 12 years old and under must never ride in
the front seat, except in a Mercedes-Benz
authorized BabySmart

TM

compatible child seat,
which operates with the BabySmartTM System
installed in the vehicle to deactivate the passenger
front airbag when it is properly installed.
Otherwise they will be struck by the airbag when it
inflates in a crash. If this happens, serious or fatal
injury can result.

According to accident statistics, children are safer
when properly restrained in the rear seating
positions than in the front seating positions.
Infants and small children must ride in back seats
and be seated in an infant or child restraint system,
which is properly secured with the vehicle’s seat
belt, fully in accordance with the child seat
manufacturer’s instructions.

Infants and small children should never share a
seat belt with another occupant. During an
accident, they could be crushed between the
occupant and seat belt.

Children too big for child restraint systems must
ride in back seats using regular seat belts. Position
shoulder belt across chest and shoulder, not face or
neck. A booster seat may be necessary to achieve
proper belt positioning for children from 41 lbs. to
the point where a lap/ shoulder belt fits properly
without one.

When the child restraint is not in use, remove it
from the vehicle or secure it with the seat belt to
prevent the child restraint from becoming a
projectile in the event of an accident.

Installation of infant and child restraint systems

Vehicle without third row seats

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To secure a tether strap to the anchorage, securely
fasten the hook (1), which is part of the tether strap, to
the anchorage ring (2). For safety, please make sure that
the hook has attached to the ring beyond the safety
catch, as illustrated.

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3 Tether anchorages for second row seats

4 Tether anchorages for third row seats (optional)

This vehicle is provided with three tether
anchorages (3) for a top tether strap behind the
second row seats.

Note:

Do not use the tether anchorages (4) for a top tether
strap on a second row seat.

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Vehicle with third row seats

3 Tether anchorages for second row seats

4 Tether anchorages for third row seats

This vehicle is provided with tether anchorages for a top
tether strap behind the second row seats (3) and the
third row seats (4).

We recommend to install infant and child restraints on
the third row seats.

When using the third row seats observe the following:

• Installation of infant and child restraint systems
with a top tether strap is allowed only on both third
row seats plus the center second row seat.

• When using the center second row seat for a top
tether strap, the left third row seat should only be
used for a child restraint system, since exiting the
vehicle may not be possible in an emergency due to
the routing of the top tether strap.

To store the left third row seat, see page 126.

Important!

An infant and child restraint system must not be
installed on the right second row seat while a passenger
rides in a third row seat. Use of the easy-entry/ exit
feature is not possible. See page 123 for easy-entry/ exit
feature.

Note:

When installing an infant or child restraint system with
a top tether strap on the left second row seat, the left
third row seat should not be occupied. For storage of the
left third row seat, see page 126.

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70Adjustable steering wheel

Adjustable steering wheel Unlocking:

Move lever (1) down. The indicator lamp, located in the
instrument cluster, comes on.

Adjusting:
Move steering wheel up or down to desired position.

Locking:
Move lever (1) up. The indicator lamp, located in the
instrument cluster, goes out.

Important!

With the key in steering lock position 2, the indicator
lamp in the instrument cluster comes on. It should go
out when the engine is running.

If the indicator lamp does not go out after starting the

War ning!

Do not adjust the steering wheel while driving. The
steering wheel must be locked while driving.
Adjusting the steering wheel while driving, or
driving without the steering wheel locked could

engine, the adjustable steering column is not locked
properly.

Do not drive the vehicle until you have properly locked
the steering column.

cause the driver to lose control of the vehicle.

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Inside rear view mirror Use your inside mirror to determine the size and

distance of objects seen in the passenger side convex
mirror.

Antiglare night position

Manual:

Tilt the mirror to the antiglare night position using the
lever (1) at its lower edge.

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Automatic (optional on ML 320):

With the key in steering lock position 2 and the
automatic antiglare function activated, the mirror
reflection brightness responds to changes in light
sensitivity.

To a ctivate:

Press button (1). The green indicator lamp in the rear
view mirror lights up.

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To deactivate:

Press button (1) again. The indicator lamp in the rear
view mirror goes out. The mirror brightness does not
respond to changes in light sensitivity.

Notes:

With gear selector lever in position “R”, or with the
interior lamps (except cargo compartment lamp)
switched on, the mirror brightness does not respond to
changes in light sensitivity.

The automatic antiglare function does not react, if
incoming light is not aimed directly at sensors in the
mirror.

Warn ing!

In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.

Electrolyte has an irritating effect. Do not allow the
liquid come into contact with eyes, skin, clothing,
or respiratory system. In cases it does, immediately
flush affected area with water, and seek medical
help if necessary.

Exterior rear view mirrors

P82.00-2044-26

First select the mirror to be adjusted – turn switch:

1 Left mirror

2 Right mirror

To adjust, toggle the switch forward, backward or to
either side.

Warn ing!

Exercise care when using the passenger-side
mirror. The passenger-side exterior mirror is
convex (outwardly curved surface for a wider field
of view). Objects in mirror are closer than they
appear. Check your inside rear view mirror or
glance over your shoulder before changing lanes.

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The switch is located on the center console.

Turn key in steering lock to position 1 or 2.

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Note:

After turning off the engine the exterior rear view
mirrors can be operated with a front door opened or
with key in steering lock position 1 for approximately
30 minutes.

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74Rear view mirrors

Vehicles with automatic antiglare function:

With the key in steering lock position 2, the driver’s
side mirror reflection brightness responds to changes in
light sensitivity.

With gear selector lever in position “R”, or with the
interior lamps (except cargo compartment lamp)
switched on, the driver’s side mirror brightness does
not respond to changes in light sensitivity.

War ning!

In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.

Electrolyte has an irritating effect. Do not allow the
liquid come into contact with eyes, skin, clothing,
or respiratory system. In cases it does, immediately
flush affected area with water, and seek medical
help if necessary.

Important!

Electrolyte drops coming into contact with the vehicle
paint finish can only be completely removed while in
their liquid state, by applying plenty of water.

Notes:

The exterior mirrors have electrically heated glass. The
heater switches on automatically, depending on outside
temperature.

If an exterior mirror housing is forcibly pivoted from its
normal position, it must be repositioned by applying
firm pressure until it snaps into place.

Exterior rear view mirror, electrically folding

(optional on ML 320 and ML 430)

1

2

P82.00-2016-26

The switch is located in the dashboard behind the
steering wheel.

1 Press switch to fold mirror out

2 Press switch to fold mirror in

If an exterior mirror housing is forcibly forced forward
or rearward (hit from the front or from the rear), press
lower half of the switch (2) until you hear a hitting
noise.

Press upper half of the switch (1) to fold mirror out.

You can adjust the exterior rear view mirrors again, see
page 73.

Notes:

The exterior rear view mirrors can vibrate if they are
not completely folded out.

Before running the vehicle through an automatic car
wash, fold the mirrors in, otherwise they might get
damaged.

After turning off the engine the exterior rear view
mirrors can be operated with a front door opened or
with key in steering lock position 1 for approximately
30 minutes.

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1 Coolant temperature gauge, see page 81

2 Outside temperature indicator (optional), see

page 82

3 Fuel gauge with reserve and fuel cap placement

warning lamp, see page 220

4 Left turn signal indicator lamp, see exterior lamp

switch, page 90

5 Knob for odometer/trip odometer readout/ reset,

FSS indicator, and intensity of instrument lamps,
see page 80

6 4-ETS+ and ESP warning lamp, see page 221

For 4-ETS+ (four wheel electronic traction system),
see page 203;
for ESP (electronic stability program), see page 205.

7 Speedometer

8 Selectable:

Trip odometer, see page 80
Main odometer, see page 80
FSS display, see page 87
Engine oil level indicator, see page 89

9 Right turn signal indicator lamp, see exterior lamp

switch, page 90

10 Knob for setting clock, see page 80

11 Tachometer, see page 82

12 Gear range indicator display, see selector lever

positions, page 168

13 Clock, see page 80

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78Instrument cluster

Indicator lamps in the instrument cluster

High beam

BAS
ESP

BAS malfunction, see page 221
ESP malfunction, see page 221

4-ETS+ malfunction, see page 221

ABS

ABS malfunction, see page 222

Brake pads worn down, see page 225

Engine oil level low, see page 224

Coolant level low, see page 224

LOW

RANGE

Transmission in LOW RANGE mode,
see page 221

BRAKE

SRS

ESP and 4-ETS+. Adjust driving to road
condition, see page 221

Brake fluid low, see page 219
EBP malfunction, see page 204
Parking brake engaged, see page 173

Front passenger airbag automatically
switched off, see page 53

Front fog lamp, see page 92

Steering wheel adjustment not locked,
see page 70

Fasten seat belts,
see page 223

Battery not being charged properly,
see page 223

SRS malfunction, see page 219

CHECK

ENGINE

If the “CHECK ENGINE” malfunction
indicator lamp comes on when the engine is
running, it indicates a malfunction of the
fuel management system, emission control
system, systems which impact emissions, or
the fuel cap is not closed tight. In all cases,
we recommend that you have the
malfunction checked as soon as possible, see
page 218.

Additional function indicator lamps
(in the odometer display)

FSS indicator (Service A), see page 87

FSS indicator (Service B), see page 87

The symbols appear in the main odometer display field
prior to the next suggested service. Depending on
operating conditions throughout the year, the next
service is calculated and displayed in days or distance
remaining. See page 87 for notes on the flexible service
system (FSS).

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80Instrument cluster

Activating instrument cluster display

The display for temperature, odometer, oil level
indicator and clock is activated by:

• Opening the driver’s door.

• Pressing button (1) in the instrument cluster (with

key removed or in steering lock position 0).

• Turning the key in steering lock to position 1 or 2.

Display illumination

Rotate knob (1) to vary intensity of instrument lamps:

• Clockwise - instrument lamp intensity increases.

• Counterclockwise - instrument lamp intensity

decreases.

Odometer/trip odometer

Activate the instrument cluster.

• Press knob (1) once to switch to or from odometer to
trip odometer readout.

• Press and hold knob (1) for more than 1 second to
reset trip odometer (with trip odometer displayed).

• Press knob (1) twice to display next scheduled
service.

Clock

Adjusting clock (instrument cluster activated):

Minute: Pull out knob (2) and turn it to the right.

Hour: Pull out knob (2) and turn it to the left.

Coolant temperature gauge

During severe operating conditions and stop-and-go city
traffic, the coolant temperature may rise close to the red
marking.

The engine should not be operated with the coolant
temperature in the red zone. Doing so may cause
serious engine damage which is not covered by the
Mercedes-Benz Limited Warranty.

Warn ing!

• Driving when your engine is badly overheated
can cause some fluids which may have leaked
into the engine compartment to catch fire. You
could be seriously burned.

• Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine if
you see or hear steam coming from it.

Turn off the engine, get out of the vehicle and do
not stand near the vehicle until it cools down.

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82Instrument cluster

Outside temperature indicator

The temperature sensor is located in the front bumper
area. Due to its location, the sensor can be affected by
road or engine heat during idling or slow driving. This
means that the accuracy of the displayed temperature
can only be verified by comparison to a thermometer
placed next to the sensor, not by comparison to external
displays (e.g. bank signs etc.).

Adaptation to ambient temperature takes place in steps
and depends on the prevailing driving conditions (stop­and-go or moderate, constant driving) and amount of
temperature change.

War ning!

The outside temperature indicator is not designed
to serve as an Ice-Warning Device and is therefore
unsuitable for that purpose. Indicated
temperatures just above the freezing point do not
guarantee that the road surface is free of ice.

Tachometer

The tachometer displays the present engine speed in
revolutions per minute (RPM).

To help protect the engine, the fuel supply is interrupted
if the engine is operated above its specified limit.

Trip computer (standard; optional on model ML 320)

To select a mode:

With key in steering lock position 1 or 2, press MODE
key repeatedly to illuminate the display and scroll
through menu for one of the following options:

Instruments
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MODE

The trip computer is located in the overhead console.

Function keys are:

• RESET

• MODE

Note:

With engine not running, the display switches off
automatically 30 seconds after the last entry.

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1. Date, see page 84.

2. Compass, see page 84.

3. Stop watch, see page 86.

4. Present fuel consumption – displays miles per
gallon or liters per 100 km.

5. Average fuel consumption – displays miles per
gallon or liters per 100 km, see page 86.

6. Distance remaining with fuel presently in tank.

Note:

The display flashes when fuel supply drops to the
reserve level. The distance remaining is no longer
shown.

7. Language – Press RESET key until the desired
language is displayed. Depending on language
selected, information is displayed in that country’s
customary system. See page 86.

8. Trip computer switched off.

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84Trip computer

To change an entry, select mode to be changed:

• Date –

Press RESET key, the month shown blinks. Now
press MODE key to advance to selected month.

Press RESET key again, the day shown blinks. Now
press MODE key to advance to selected day.

Press RESET key again, the year shown blinks. Now
press MODE key to advance to selected year.

Press RESET key again, the display stops blinking
and the date is set.

• Compass –

The compass displays the direction the vehicle is
traveling, such as N, NE, E, SE, S, SW, W or NW.

Note:

The presence of buildings, bridges, power lines and
large antenna masts can influence the displayed
values. Metallic or magnetic objects in or on the
vehicle can influence the accuracy of the compass.

To change the compass zones:

Determine the geographical point of the vehicle with the
aid of the zone maps below:

1. Turn key in steering lock to position 2.

2. Press MODE key repeatedly until the compass
display appears in the trip computer display.

3. Press RESET key to select the compass zone mode.
The zone selected last is shown in the display.

4. Press RESET key repeatedly until the correct
compass zone, as determined from the zone map, is
shown in the display.

5. Press MODE key twice to activate the new compass
zone and change back to compass display.

Zone map North America Zone map South America

85Trip computer

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86Trip computer

To calibrate the compass:

If the vehicle was exposed to a significant magnetic
zone, such as high voltage power lines, the compass
may have to be calibrated.

Calibration of the compass should be done in an area
free of steel superstructures and power lines. All
electrical consumers (e.g. exterior lamps, climate
control, etc.) should be switched off, doors and liftgate
closed. Do not open or close the roof. An open door or
liftgate triggers the display “–––”.

1. Start and run the engine.

2. Press MODE key repeatedly until the compass
display appears in the trip computer display.

3. Press RESET key to select the compass zone display.

4. Press RESET repeatedly until the correct zone, as
determined from the zone map (see page 85), is
shown in the display.

5. Press MODE key, “CAL–” appears in the display.

6. Press and hold RESET for a minimum of 2 seconds.

7. Without interruption drive two or more full circles
at a speed between 3 mph (5 km / h) and 7 mph
(10 km / h) during which the message “CAL” is
replaced with a compass bearing (e.g. N, SW etc.),
immediately followed by three full circles at the
same speed, with only the rear window defroster
switched on. The defroster can be switched off
again. The calibration of the compass is now
complete.

• Stop watch –

Press RESET key to start the count. Press again to
stop the count. Press and hold RESET key to reset
stop watch.

• Average fuel consumption –

Press RESET key to delete present reading.

• Language –

Press RESET key to set the language used in the
display.

Flexible service system (FSS)
(service indicator)

The FSS permits a flexible service schedule that is
directly related to the operating conditions of the
vehicle.

The symbol 9 or ´ appears in the main odometer
field prior to the next suggested service. Depending on
operating conditions throughout the year, the next
service is calculated and displayed in days or distance
remaining.

The display begins to appear either 30 days or
2000 miles/km prior to the next suggested service.

The symbols 9 or ´ indicate the type of service
to be performed:

9 Service A

´ Service B

The message is displayed for approximately 10 seconds
when turning the key in steering lock to position 2, or
while driving when reaching the service warning
threshold.

The message can be canceled manually by pressing
button (1).

The next service due date is displayed either in days or
in miles, depending on your driving style.

Once the suggested term has passed, the symbol 9
or ´ plus message, preceded by a – (minus symbol)
blinks every time when turning the key in steering lock
to position 2.

Calling up service indicator manually:

Activate the instrument cluster, see page 80.

Within 4 seconds press button (1) twice to call up the
FSS display for approximately 10 seconds.

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88Flexible service system

Important!

The FSS indicator is not an engine oil level indicator.
See page 89 for engine oil level indicator.

Notes:

When disconnecting vehicle battery for one or more
days at a time, such days will not be counted. Any such
days not counted by the FSS can be added by your
Mercedes-Benz Light Truck Center.

The interval between services is determined by the type
of driving for which the vehicle is used. For example,
driving at extreme speeds, and cold starts combined
with short distance driving in which the engine does not
reach normal operating temperature, reduce the interval
between services.

Following a completed A or B service the Mercedes­Benz Light Truck Center sets the counter mileage to
10 000 miles (Canada: 15 000 km) and 365 days.

The counter can also be set by any individual. To do so:

1. Turn the key in steering lock to position 2.

2. Immediately press button (1) twice within one
second.

3. The present status for days or distance is displayed.
Within 10 seconds turn key in steering lock to
position 0.

4. Press and hold button (1), while turning key in
steering lock to position 2 again. The present status
for days or distance is displayed once more.
Continue to hold button (1).

After approximately 10 seconds a signal sounds, and
the display shows 10 000 miles (Canada: 15 000 km)
for approximately 10 seconds.

5. Release button (1).

If the FSS counter was inadvertently reset, have it
corrected at a Mercedes-Benz Light Truck Center.

Notes:

The FSS allows for distances between 10 000 miles
(Canada: 15 000 km) and 20 000 miles (Canada:
30 000 km), or from 365 to 730 days between services.

However you choose to set your reference numbers, the
scheduled services as posted in the Service Booklet
must be followed to properly care for your vehicle.

Engine oil level indicator

To check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.

Check oil level approximately 5 minutes after stopping
the engine, allowing for the oil to return to the oil pan.

Turn the key in steering lock to position 2 and wait until
the display “––––––” appears in the odometer display
field.

Within 1 second press button (1) twice.

The following messages are available:

“OIL i.O”
No oil needs to be added.

“–1.0 L”

“–1.5 L”

“–2.0 L”

Add oil to upper (max) mark of the dipstick.

See page 233 for instructions on adding engine oil.

“OIL HI”

Do not overfill the engine.
Excessive oil must be siphoned or drained off. It could
cause damage to the engine and catalytic converter not
covered by the Mercedes-Benz Limited Warranty.

The display “––––––” flashes in the odometer display
field if a proper oil level check cannot be performed. The
engine oil level check can be repeated after a short time.

Perform the engine oil level check with the dipstick, if it
cannot be completed via the odometer display field.
See page 233.

In this case we recommend that you have the system
checked at a Mercedes-Benz Light Truck Center.

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90Exterior lamp switch

Exterior lamp switch

Rotate switch $ to positions:

D Off

C Parking lamps (also side marker lamps, taillamps,

license plate lamps, instrument panel lamps)
Canada only: When the engine is running, the low
beam is additionally switched on.

õ Parking lamps plus low beam or high beam

headlamps (switch pushed forward)

ƒ Standing lamps, left or right side (depending on

turn signal switch position). Turn key in steering
lock to position 0 or remove.

Standing lamps, left – move stalk to position (5).

Standing lamps, right – move stalk to position (4).

Move stalk to positions:

1 Low beam (exterior lamp switch position õ)

2 High beam (exterior lamp switch position õ)

3 High beam flasher (high beam available

independent of exterior lamp switch position)

4 Turn signals, right

5 Turn signals, left

To signal minor directional changes, such as changing
lanes on a h ighway, move exterior lamp switch briefly to
the point of resistance only and release. The turn
signals blink three times.

To operate the turn signals continuously, move the
exterior lamp switch past the point of resistance (up or
down). The switch is automatically canceled when the
steering wheel is turned to a large enough degree.

Turn signal failure

If one of the turn signals fails, the turn signal indicator
system flashes and sounds at a faster than normal rate.

Standing lamps

When the vehicle is parked on the street the standing
lamps (right or left side parking lamps) can be turned
on, making the vehicle more visible to passing vehicles.

The standing lamps cannot be operated with the key in
steering lock position 1 or 2.

Note:

With the key removed and a front door open, a warning
sounds if the vehicle’s exterior lamps (except standing
lamps) are not switched off.

Daytime running lamps (Canada only)

When the engine is running and the selector lever is in
a driving position, the low beam headlamps (includes
parking lamps, side marker lamps, taillamps and
license plate lamps) are automatically switched on.

When shifting from a driving position to position “N”
or “P”, the low beam switches off (2 seconds delay).

For nighttime driving the exterior lamp switch should
be turned to position õ to permit activation of the
high beam headlamps.

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92Fog lamp switch

Fog lamp switch (except Canada)

The switch is located in the center console.

Press down rocker switch symbols:

1 Auxiliary front fog lamps on (if so equipped). Green

indicator lamp ‡ in instrument cluster comes on.

Press upper half of the switch again to switch fog
lamps off. The green indicator lamp ‡ in
instrument cluster goes out.

2 Rear fog lamp (driver’s side) on. Yellow indicator

lamp in switch comes on in addition to green
indicator lamp ‡ in instrument cluster.
Press lower half of the switch again to switch rear
fog lamp off. The yellow indicator lamp in switch
goes out.

Note:

Front fog lamps operate with the low beam headlamps
on. Consult your state Motor Vehicle Regulations
regarding allowable lamp operation.

Fog lamp switch (Canada only)

2 Rear fog lamp (driver’s side) in addition to front fog

lamps on. Yellow indicator lamp in switch comes on
in addition to green indicator lamp ‡ in
instrument cluster.
Press lower half of the switch again to switch rear
fog lamp off. The yellow indicator lamp in switch
goes out.

When pressing upper half of the switch once with
front fog lamps and rear fog lamp on, first the rear
fog lamp is switched off. The yellow indicator lamp
in the switch goes out. Press upper half of the
switch again to switch off front fog lamps. The green
indicator lamp ‡ in instrument cluster also goes
out.

Instruments
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The switch is located in the center console.

Press down rocker switch symbols:

1 Front fog lamps on (if so equipped). Green indicator

lamp ‡ in instrument cluster comes on.

Press upper half of the switch again to switch fog
lamps off. The green indicator lamp ‡ in
instrument cluster goes out.

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Note:

Front fog lamps operate with the low beam headlamps
on. Consult your state Motor Vehicle Regulations
regarding allowable lamp operation.

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94Hazard warning flasher

Hazard warning flasher switch

The hazard warning flasher switch is located on top of
the steering column.

The hazard warning flasher can be activated either
manually via the switch located in the dashboard, or it
is activated automatically at the time an airbag is
deployed.

To activate hazard warning flasher, press switch once.
To deactivate, press switch again.

If hazard warning flasher was activated automatically,
press switch twice to deactivate.

Note:

To signal turns while being towed with hazard warning
flasher in use, turn key in steering lock to position 2
and activate combination switch for left or right turn
signal in usual manner. Now deactivate the hazard
warning flasher, only the selected turn signal will
operate. Upon canceling the turn signal, the hazard
warning flasher must be activated again.

Headlamp cleaning system

(with Xenon headlamps)

The switch is located in the instrument panel behind the
steering wheel.

The headlamp washer can be activated with the key in
steering lock position 2.

Briefly press symbol side of switch.

Windshield wiper/washer switch

Move stalk briefly up for single wipe without adding
washer fluid (use only when windshield is wet).

Pull stalk toward steering wheel and hold to activate
wiper and washer.

Wiper off

Move stalk down for:

Intermittent wiping
(Interval is vehicle speed dependent

1

.
Optional rain sensor: One initial wipe, pauses
between wipes are automatically controlled by a
rain sensor monitoring wetness of windshield.)

Notes:

With vehicle at a standstill, a front door open and
the key in steering lock position 2 there will be no
operation of windshield wipers in intermittent
setting.

Optional rain sensor:
Do not leave in intermittent setting when vehicle
is taken to an automatic car wash or when
cleaning the windshield. Wipers will operate in
presence of water spray at windshield, and wipers
may be damaged as a result.

Move stalk up for:

Normal wiper speed

Fast wiper speed

1 At speeds of approximately 105 mph (170 km/h) the wiper

switches automatically to continuous wiping.

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96Rear window wiper/washer

Rear window wiper/washer

1

2

The rear window wiper /washer switch is located in the
instrument panel.

With key in steering lock position 2:

1 Press for interval wiping,

2 Press to switch off,

or

press briefly for approx. 5 seconds wiper operation,
or

press and hold for simultaneous operation of wiper
and washer. After releasing the switch the wiper
operates for additional 5 seconds.

The rear window wiper will also automatically engage if
the windshield wiper is engaged and the gear selector
lever is placed in “R” Reverse.

Windshield wipers smear

If the windshield wipers smear the windshield, even
during rain, activate the washer system as often as
necessary. The fluid in the washer reservoir should be
mixed in the correct ratio.

Note:

For windshield and headlamp washer fluid mixing ratio
see page 237.

Blocked windshield wipers

If the windshield wipers become blocked (for example,
due to snow), switch off the wipers.

For safety reasons before removing ice or snow, remove
key from steering lock. Remove blockage.

Activate windshield wiper/washer switch again (key in
steering lock position 1).

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