Lexus GS300 1998, GS350 1998, GS400 1998, GS430 1998, GS450H 1998 Owner Manual

SECTION 6 – 4

SERVICE PROCEDURES AND
SPECIFICATIONS

Electrical components

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

404

Checking battery condition . . . . . . . . . . . . . . . . . . . . . . . . . . .

413

Battery recharging precautions . . . . . . . . . . . . . . . . . . . . . . . .

419

Checking and replacing the blade type fuses . . . . . . . . . . . . .

420

Checking the cartridge type fuses . . . . . . . . . . . . . . . . . . . . . .

426

Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

428

Checking the headlight aim . . . . . . . . . . . . . . . . . . . . . . . . . .

428

Replacing light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

431

403

ELECTRICAL COMPONENTS

SPECIFICATIONS

– FUSE LOCATION

64G004–1

1



Engine compartment

2

Passenger’s side kick panel

3

Driver’s side kick panel

4

Engine compartment (Canada only)

– FUSES

404

64G015

Driver’s side kick panel

64G014

Passenger’s side kick panel

ELECTRICAL COMPONENTS

405

ELECTRICAL COMPONENTS

Engine compartment

64G013

406

64G026

Engine compartment (Canada only)

ELECTRICAL COMPONENTS

407

ELECTRICAL COMPONENTS

No.

10

11

12

13
14

FUSE

1

WASHER 20 Windshield washer

2

FR FOG 15 Fog lights

3

4

5

6

7

8

9

TAIL 10

SRS–ACC 15 SRS

GAUGE 10

FUEL OPN 10 Fuel filler door opener

D FR

DOOR

PANEL 7.5

HEATER 10 Air conditioning

SRS–B 5

D P/SEAT 30 Power seat system

RADIO

NO.2

WIPER 25 Windshield wipers

OBD 7.5 On–board diagnosis

AMPERE

20

15

Tail lights, Side marker lights,
License plate lights,
Parking lights

Back–up lights, Gauges and
meters, service reminder indicators
and buzzers

Power window system,
Door lock system,
Wireless remote control

Emergency flashers,
Headlight cleaner

Gauges and meters, service
reminder indicators and warning
buzzers

Audio, Shift lock system

CIRCUIT

408

ELECTRICAL COMPONENTS

No.

15

16

17

18

19

20

21
22
23

24

25

FUSE

STOP 15

CIG 15 Cigarette lighter, Power outlet

ECU–IG 15

STARTER 5 Starting system

IGN 5

D RR

DOOR

RR FOG 10 No circuit

M/R HTR 10 Outside rear view mirror

S/ROOF 25 Electronic moon roof

P FR

DOOR

P P/SEAT 30

AMPERE

20

20

Stop lights,
Anti–lock brake system, Traction
control system

Power window, Door lock system,
Wireless remote control, Theft
deterrent system

Multiport fuel injection
system/sequential multiport fuel
injection system, SRS, Anti–lock
brake system,
Vehicle skid control system, Cruise
control system

Power window system,
Door lock system,
Wireless remote control

Power window system,
Door lock system,
Wireless remote control

Power seat system,
Tilt and telescopic steering

CIRCUIT

409

ELECTRICAL COMPONENTS

26

DOME 10

27

SEAT HTR 20 Seat heater

No.

28
29
30

31

32

33

34
35

36

37

FUSE

4WS 25 No circuit

TV 15 No circuit

ECU–B2 5 Power seat system

P RR

DDOR

ECU–B1 20

MPX–B 10

HORN 10 Horn

ETCS 15 Electronic throttle control system

AM2 15

TEL 15 No circuit

AMPERE

20

Interior lights, Personal lights,
Vanity lights, Trunk light, Clock

CIRCUIT

Power window system,
Door lock system,
Wireless remote control

Power window system,
Door lock system,
Wireless remote control,
Theft deterrent system, Trunk lid
opener, Interior lights, Personal
lights, Clock, Headlight cleaner

Power window system,
Door lock system,
Wireless remote control,
Theft deterrent system,
Trunk lid opener

Starting system, Multiport fuel
injection system/sequential
multiport fuel injection system

410

ELECTRICAL COMPONENTS

44

TURN–HA

38

No.

39

40

41

42

43

Z

FUSE

EFI 25

ALT–S 5 Charging system

RADIO

NO.1

DRL NO.2 30

H–LP L

UPR

H–LP R

UPR

10

AMPERE

20

10

10

DRL NO.1 30

H–LP L

45

46

47

LWR

H–LP R

LWR

H–LP R

UPR

15

15

15

Turn signal lights

CIRCUIT

Multiport fuel injection
system/sequential multiport fuel
injection system, Emission control
system

Audio

Vehicles sold in Canada:

Daytime running light system

Vehicles sold in U.S.A.:

Left–hand headlight (high beam)

Vehicles sold in U.S.A.:

Right–hand headlight (high beam)

Vehicles sold in Canada:

Daytime running light system
Left–hand headlight (low beam)

Right–hand headlight (low beam)

Vehicles sold in Canada:

Right–hand headlight (high beam)

411

ELECTRICAL COMPONENTS

H–LP L

48



UPR

SPARE Spare fuse

15

Vehicles sold in Canada:

Right–hand headlight (high beam)

412

CHECKING BATTERY

CONDITION

Precautions

CAUTION

BATTERY PRECAUTIONS
The battery produces flammable and explosive hydrogen gas.
 Do not cause a spark by contacting the battery terminals

with tools.
 Do not smoke or light a match near the battery.
The electrolyte contains poisonous and corrosive sulfuric acid.

 Avoid contact with eyes, skin or clothes.
 Never inhale or swallow electrolyte.
 Wear protective safety glasses when working near the

battery.
 Keep children away from the battery.
EMERGENCY MEASURES
 If electrolyte gets in your eyes, flush your eyes with clean

water for at least 15 minutes and get immediate medical

attention. If possible, continue to apply water with a sponge

or cloth while traveling to the medical office.

ELECTRICAL COMPONENTS

413

ELECTRICAL COMPONENTS

 If electrolyte gets on your skin, thoroughly wash the

contacted area. If you feel a pain or burn, get
medical attention immediately.

 If electrolyte gets on your clothes, there is a

possibility of its soaking through to your skin, so
immediately take off the exposed clothing and follow
the procedure above, if necessary.

 If you happen to swallow electrolyte, drink a large

quantity of water or milk. Follow with milk of
magnesia, beaten raw egg or vegetable oil. Then go
immediately for emergency help.

64G001

Checking battery exterior

414

1



Terminals 2Hold–down clamp

Check the battery for corroded or loose connections,
cracks, or loose hold–down clamps.

1. If the battery is corroded, wash it off with a solution of
warm water and baking soda. Coat the terminals with grease
to prevent further corrosion.

2. If the connections are loose, tighten the clamp bolts – but
do not overtighten.

3. Tighten the hold–down clamp only enough to keep the
battery firmly in place. Overtightening may damage the
battery case.

ELECTRICAL COMPONENTS

NOTICE

 Make sure the engine and all accessories are turned

off before performing maintenance.

 When checking the battery, remove the ground cable

first and reinstall it last.

 Be careful not to cause a short circuit with tools.
 Take care no solution gets into the battery when

washing it.

Checking battery fluid

There are 2 types of batteries: maintenance type and
non–maintenance type.

A non–maintenance battery has ”MAINTENANCE FREE
BATTERY” on its top. A maintenance type battery does not
have such indication.

Maintenance type battery

Check the fluid condition by the fluid level lines on the side
of the battery. Or if the battery has a hydrometer on its top,
you can also check the hydrometer.

Non–maintenance battery

Check the battery condition by the hydrometer on the top of
the battery.

415

ELECTRICAL COMPONENTS

(a) Checking by the fluid level lines (Maintenance type
battery only)

64G002

1

Upper line 2Lower line



The fluid (electrolyte) level must be between the upper
and lower lines.

When checking the fluid level, look at all six cells, not just one
or two.

If the level is lower than the lower line, add distilled water.
(See ”Adding distilled water” on page 418.)

(b) Checking by the hydrometer

416

64G003

ELECTRICAL COMPONENTS

Check the battery condition by the hydrometer color.
Maintenance type battery

1

BLUE – Good condition.

2

WHITE – Charging necessary. Have the battery
checked by your Lexus dealer.

3

RED – Add distilled water. (See ”Adding distilled
water” on page 418.)

Non–maintenance type battery

1

BLUE – Good condition.

2

WHITE – Charging necessary. Have the battery
checked by your Lexus dealer.

3

RED – Have the battery checked by your Lexus dealer.

NOTICE

For non–maintenance battery:
Do not refill the battery with water.

417

ELECTRICAL COMPONENTS

Adding distilled water
(Maintenance type battery only)

64L062

1

Low 2O.K.



1. Remove the vent plugs.

2. Add distilled water to cells needing fluid.
If the side of your battery is covered, check the water level by

looking down directly above the cell as illustrated above.

3. Retighten the vent plugs securely.

NOTICE

 Do not overfill the cells. Excess electrolyte could

squirt out of the battery during heavy charging,
causing corrosion or damage.

 Use a cover on the battery for longer life.

418

BATTERY RECHARGING

PRECAUTIONS

During recharging, the battery is producing hydrogen
gas.

Therefore, before recharging:

1. Maintenance type batteries – Remove the vent plugs.

2. If recharging with the battery installed on the vehicle, be
sure to disconnect the ground cable.

3. Make sure the power switch on the recharger is off when
connecting the charger cables to the battery and when
disconnecting them.

CAUTION

 Always charge the battery in an unconfined area. Do not

charge the battery in a garage or closed room where there

is not sufficient ventilation.
 Non–maintenance batteries: Only do a slow charge (5 A or

less). Charging at a quicker rate is dangerous. The battery

may explode causing personal injuries.

Maintenance type batteries: Be sure to remove the vent

plugs before recharging.

ELECTRICAL COMPONENTS

419

ELECTRICAL COMPONENTS

NOTICE

Never recharge the battery while the engine is running.
Also, be sure all accessories are turned off.

CHECKING AND REPLACING

THE BLADE TYPE FUSES

420

64G006–1

Driver’s side kick panel

64G017

Passenger’s side kick panel

ELECTRICAL COMPONENTS

421

ELECTRICAL COMPONENTS

64G005–2

1

Engine compartment

Spare fuses 2Pull–out tool

64G027

Engine compartment (Canada only)

1. Turn the ignition switch off and open the fuse box lid.

Determine which fuse may be causing the problem. The lid
of the fuse box shows the name of the circuit for each fuse.

422

64L013

2. Make sure the inoperative component is turned off.
Pull the suspected fuse straight out with the pull–out tool
and check it. If it has blown, push a new fuse into the clips.

ELECTRICAL COMPONENTS

423

ELECTRICAL COMPONENTS

64G008

Good Blown

a. Look carefully at the fuse. If the thin wire is broken, the
fuse has blown. If you are not sure or if it is too dark to see,
try replacing the suspected fuse with one of the same value
that you know is good.

b. Install only a fuse with the amperage rating designated on
the fuse box lid.

If you do not have a spare fuse, in an emergency you can pull
out the ”CIG”, ”RAD NO.1” or ”OBD” fuse, which may be
dispensable for normal driving, and use it if its amperage
rating is the same.

If you cannot use one of the same amperage, use one lower
than, but as close as possible to, the amperage. If the
amperage is lower than that specified, the fuse might blow out
again but this does not indicate anything wrong. Be sure to
get the correct fuse as soon as possible and return the
substitute to its original clips.

424

It is a good idea to purchase a set of spare fuses and keep them
in your vehicle for emergencies.

If the new fuse immediately blows out, there is a problem with
the electrical system. Have your Lexus dealer correct it as
soon as possible.

CAUTION

Never use a fuse with a higher amperage rating, or any other
object, in place of a fuse. This may cause extensive damage
and possibly a fire.

ELECTRICAL COMPONENTS

425

ELECTRICAL COMPONENTS

CHECKING THE CARTRIDGE

TYPE FUSES

64G019–1

1

Good 2Melted



If the headlights or other electrical components do not
work and the blade type fuses are O.K., check the
cartridge type fuses. If any of the cartridge type fuses are
blown, they must be replaced.

If there is an overload in the circuits from the battery, the fuses
are designed to blow before the entire wiring harness is
damaged.

NOTICE

Before replacing the fuses, have the cause of electrical
overload determined and repaired by your Lexus dealer.

426

CAUTION

Always use a genuine Lexus fuse or equivalent for
replacement. Never install an ordinary wire – even for a
temporary fix. This may cause extensive damage and possibly
a fire.

ELECTRICAL COMPONENTS

427

ELECTRICAL COMPONENTS

ADDING WASHER FLUID

64G009

If the washer tank becomes nearly empty, add washer
fluid.

You may use plain water as washer fluid. However, in cold
areas where temperatures range below the freezing point, use
washer fluid containing antifreeze. This product is available
at your Lexus dealer and most auto parts stores. Follow the
manufacturer’s directions for how much to mix with water.

NOTICE

Do not use engine antifreeze or any other substitute
because it may damage your vehicle’s paint.

428

CHECKING THE HEADLIGHT

AIM

64G020–1

1

Beam angle gauge (vertical movement)



2

Beam angle gauge (horizontal movement)

Before checking the headlight aim:

1. Be sure that the body around the headlight is not deformed.

2. Park the vehicle on a level spot.

3. The driver gets into the driver’s seat and puts the vehicle
in a state readying for a driving (with a full tank).

4. Bounce the vehicle several times.

ELECTRICAL COMPONENTS

429

ELECTRICAL COMPONENTS

64G021–1

1

Bubble 2Acceptable range



Vertical movement gauge: The bubble of the gauge should
not deviate from the center of the gauge by more than 2 marks
to either side of the gauge.

430

64G022

1

Mark 2Acceptable range



Horizontal movement gauge: The mark should not deviate
by more than one mark to either side of the gauge.

If the error is over the value specified above, take the vehicle
to your Lexus dealer to adjust the headlight aim.

ELECTRICAL COMPONENTS

REPLACING LIGHT BULBS

The illustration on the following pages show the locations of
light bulbs. If it is necessary to replace a bulb, take your
vehicle to your Lexus dealer as soon as possible. Use bulbs
with the bulb numbers and wattage ratings given in the table.

431

ELECTRICAL COMPONENTS

CAUTION

 Do not disassemble, repair or take apart the low beam

headlight bulbs, connector, power supply circuits and
rotated components. Or you may be injured by electric
shocks. Call your dealer when the headlights fail to work
or have to be replaced or disposed of.

 Halogen bulbs have pressurized gas inside and require

special handling. They can burst or shatter if scratched or
dropped. Hold a bulb only by its plastic or metal case. Do
not touch the glass part of a bulb with bare hands.

Only use a bulb of the listed type.

432

NOTICE

LIGHT LOCATION

64G023–1

Light Bulbs Bulb No. W T

ype

1 Headlight (Low beam)

Discharge bulb D2R 35

B

Halogen bulb HB4 51

C

2 Front turn signal light 1156 21

D

3 Headlight (High beam) HB3 60

A

4 Parking light ––– 5

D

5 Fog light HB4 51

C

6 Front side marker light 194 3.8

D

ELECTRICAL COMPONENTS

433

ELECTRICAL COMPONENTS

64G024

434

Light Bulbs Bulb No. W T

ype

1 High mounted stoplight 921 5

D

2 Trunk light 194 3.8

D

3 License plate light ––– 5

D

4 Tail/stop light ––– 5/21

D

5 Back–up light ––– 21

D

6 Tail light ––– 5

D

7 Rear turn signal light ––– 21

D

8 Tail/stop light ––– 5/21

D

64G012

ELECTRICAL COMPONENTS

435

ELECTRICAL COMPONENTS

Light Bulbs Bulb No. W T

ype

1 Front personal lights ––– 8

F

2 Vanity lights ––– 3

E

3 Front interior lights ––– 8

E

4 Rear personal lights ––– 5

F

5 Door courtesy lights 194 3.8

D

6 Foot lights ––– 1.4

D

7 Glovebox light ––– 1.2

D

A: HB3 halogen bulbs
B: D2R discharge bulbs
C: HB4 halogen bulbs
D: Wedge base bulbs
E: Double end bulbs
F: Single end bulbs

436

SECTION 6 – 5

SERVICE PROCEDURES AND
SPECIFICATIONS

Body

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

438

Protecting your vehicle from corrosion . . . . . . . . . . . . . . . . .

439

Washing and waxing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

440

Cleaning the interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

442

437

BODY

SPECIFICATIONS

– DIMENSIONS AND WEIGHT

Overall length
Overall width
Overall height
Wheelbase
Tread – Front

Vehicle capacity weight (occupants + luggage)

*: Unladen vehicle

– FUEL TANK

Capacity

438

– Rear

4805 mm (189.2 in.)
1800 mm (70.9 in.)
1440 mm (56.7 in.)*
2800 mm (110.2 in.)
1535 mm (60.4 in.)
1510 mm (59.4 in.)
400 kg (885 lb.)

75 L (19.8 gal., 16.5 lmp.gal.)

BODY

PROTECTING YOUR VEHICLE

FROM CORROSION

Proper care of your Lexus can help ensure long–term
corrosion prevention.

The most common causes of corrosion to your vehicle are:

 The accumulation of road salt, dirt and moisture in

hard–to–reach areas under the vehicle.

 Chipping of paint or undercoating caused by minor

accidents or by stones and gravel.

The following conditions will cause or accelerate
corrosion of your vehicle, so it is important to keep your
vehicle, particularly the underside, as clean as possible
and to repair any damage to paint or protective coatings
as soon as possible.

 The presence of road salt or dust control chemicals, salt in

the air near the sea coast, industrial air pollution.

 High humidity, especially at temperatures just above

freezing point.

 Certain parts of your vehicle are wet or damp for an

extended period of time, even though other parts of the
vehicle are dry.

 Components of the vehicle which are prevented from

quick–drying due to lack of proper ventilation are exposed
to high temperature.

To help prevent corrosion on your Lexus, follow these
guidelines:

Keep your vehicle clean by regular washing. In addition,

observe the following points.
 If you drive on salted roads in the winter or if you live near

the ocean, you should hose off the undercarriage at least
once a month to minimize corrosion.

 High pressure water or steam is effective for cleaning the

vehicle’s underside and wheel housings. Pay particular
attention to these areas as it is difficult to see all the mud
and dirt. It will do more harm than good to simply wet the
mud and debris without removing them. The lower edge
of doors, rocker panels and frame members have drain
holes which should not be allowed to clog with dirt as
trapped water in these areas can cause corrosion.

 W ash the underside of the vehicle thoroughly when winter

is over.

See ”Washing and waxing” for more tips.
Check the condition of your vehicle’s paint and trim. If

you find any chips or scratches in the paint, touch them up
immediately to prevent corrosion from starting. If the chips
or scratches have gone through the bare metal, have a
qualified body shop make the repair.

439

BODY

Check the interior of your vehicle. Water and dirt can

accumulate under the floor mats and could cause corrosion.
Occasionally check under the mats to make sure the area is
dry. Be particularly careful when transporting chemicals,
cleansers, fertilizers, salt, etc. These should be transported in
proper containers. If a spill or leak should occur, immediately
clean and dry the area.

Keep your vehicle in a well ventilated garage or a roofed
place. Do not park your vehicle in a damp, poorly
ventilated garage. If you wash your vehicle in the garage,

or if you drive it in covered with water or snow, your garage
may be so damp it will cause corrosion. Even if your garage
is heated, a wet vehicle can corrode if the ventilation is poor.

WASHING AND WAXING

Washing your Lexus

Keep your vehicle clean by regular washing.

The following cases may cause weakness to the paint or
corrosion to the body and parts. Wash your vehicle as soon
as possible.

 When driving in a coastal area
 When driving on a road sprinkled with antifreeze
 When having stuck of coal tar, tree sap, bird droppings and

carcass of an insect.

 When driving in the areas where there are a lot of smoke,

soot, dust, iron dust and chemical substance

 When the vehicle becomes remarkably dirty with dust and

mud

Hand–washing your Lexus

Work in the shade and wait until the vehicle body is not hot
to the touch.

1. Rinse off loose dirt with a hose. Remove any mud or road
salt from the underside of the vehicle or in the wheel wells.

2. Wash with a mild car–wash soap, mixed according to the
manufacturer’s instructions. Use a soft cotton mitt and keep
it wet by dipping it frequently into the wash water. Do not rub
hard – let the soap and water remove the dirt.

440

BODY

Aluminum wheels: Use only a mild soap or neutral

detergent.
Urethane bumpers and side moldings: W ash carefully. Do

not scrub with abrasive cleaners. The bumper and side
molding faces are soft.

Road tar: Remove with turpentine or cleaners that are
marked safe for painted surfaces.

NOTICE

Do not use gasoline or strong solvents, which may be
toxic or cause damage.

3. Rinse thoroughly – dried soap can cause streaking. In hot
weather you may need to rinse each section right after you
wash it.

4. To prevent water spots, dry the vehicle using a clean soft
cotton towel. Do not rub or press hard – you might scratch the
paint.

Automatic car wash

Your vehicle may be washed in an automatic car wash, but
remember that the paint can be scratched by some type of
brushes, unfiltered washing water, or the washing process
itself. Scratching reduces paint durability and gloss,
especially on darker colors. The manager of the car wash
should be able to advise you whether the process is safe for
the paint on your vehicle.

Waxing your Lexus

Polishing and waxing is recommended to maintain the
original beauty of your Lexus’ finish.

Once a month or if the vehicle does not repel water well, apply
wax.

1. Always wash and dry the vehicle before you begin waxing,
even if you are using a combined cleaner and wax.

2. Use a good quality polish and wax. If the finish has
become extremely weathered, use a car–cleaning polish,
followed by a separate wax. Carefully follow the
manufacturer’s instructions and precautions. Be sure to
polish and wax the chrome trim as well as the paint.

3. Wax the vehicle again when water does not bead but
remains on the surface in large patches.

441

BODY

CLEANING THE INTERIOR

CAUTION

 Be careful not to splash water or spill liquid on the floor.

This may prevent the side airbags from activating
correctly, resulting in serious injury.

 Do not wash the vehicle floor with water, or allow water to

get onto the floor when cleaning the vehicle interior or
exterior. Water may get into audio components or other
electrical components above or under the floor carpet (or
mat) and cause a malfunction; and it may cause body
corrosion.

442

BODY

Leather Interior

The selected leather is used in your Lexus. Due to a leather
product, some parts of leather may be rough, uneven or
scratched originally.

To keep good appearance, we recommend you to clean it
periodically twice a year.

Remove dirt on the leather in the following ways:

1. Wipe it off lightly using a soft cloth (e.g. gauze) dampened
with 5% solution of neutral detergent for wool.

2. Wring water from a clean cloth and thoroughly wipe o ff all
traces of detergent with it.

3. Wipe off the surface of the leather with a dry soft cloth.
Allow the leather to dry in a ventilated shaded area. Excess
of wet may cause the hardening or shrinking of the leather.

NOTICE

443

BODY

 Dirt or sand adhered to the leather may damage the

treated surface and cause it to wear earlier. Remove
dirt or sand using a vacuum cleaner.

 If a stain should fail to come out with a neutral

detergent, apply a cleaner that does not contain an
organic solvent.

 Never use organic substances such as benzine, alcohol

or gasoline, or alkaline or acid solutions for cleaning
the leather as these could cause discoloring.

 Use of a nylon brush or synthetic fiber cloth, etc. may

scratch the fine grained surface of the leather.

 Mildew may develop on soiled leather upholstery. Be

especially careful to avoid oil spots. Try to keep your
upholstery always clean.

 Long exposure to direct sunlight may cause the leather

surface to harden and shrink. Keep your vehicle in a
shaded area, especially in the summer.

 The interior of your vehicle is apt to heat up on hot

summer days, so avoid placing on the upholstery items
made of vinyl or plastic or containing wax as these
tend to stick to leather when warm.

 Improper cleaning of the leather upholstery could

result in discoloration or staining.

Synthetic Leather Areas
(Dash and sun visors)

The synthetic leather areas may be easily cleaned with a
mild soap or detergent and water.

First vacuum over the upholstery to remove loose dirt. Then,
using a sponge or soft cloth, apply the soap solution to the
synthetic leather. After allowing it to soak in for a few
minutes to loosen the dirt, remove the dirt and wipe off the
soap with a clean damp cloth. If all the dirt does not come off,
repeat the procedure. Commercial foaming–type cleaners are
also available which work well. Follow the manufacturer’s
instructions.

NOTICE

Do not use solvent, thinner, gasoline or window cleaner
on the interior.

444

BODY

Carpets, Windows and Seat Belts

Begin by vacuuming thoroughly to remove as much dirt as
possible. Several types of foam cleaners are available; some
are in aerosol cans and others are powders or liquids which
you mix with water to produce a foam. To shampoo the
carpets, use a sponge or brush to apply the foam. Rub in
overlapping circles. Do not apply water – the best results are
obtained by keeping the carpet as dry as possible. Read the
shampoo instructions and follow them closely.

The seat belts may be cleaned with mild soap and water or
with lukewarm water.

Use a cloth or sponge. As you are cleaning, check the belts
for excessive wear, fraying or cuts.

NOTICE

 Use a good foam–type shampoo to clean the carpets.
 Do not use dye or bleach on the belts – it may weaken

them.
 The windows may be cleaned with any household

window cleaner.
 When cleaning the inside of the rear window, be

careful not to scratch or damage the heater wires.

Air Conditioning Control Panel, Car Audio,
Instrument Panel, Console Panel, and
Switches

Use a soft damp cloth for cleaning.
Soak a clean soft cloth in water or lukewarm water then

lightly wipe off any dirt.

NOTICE

 Do not use organic substances (solvents, kerosene,

alcohol, gasoline, etc.) or alkaline or acidic solutions.
These chemicals can cause discoloring, staining or
peeling of the surface.

 If you use cleaners or polishing agents, make sure

their ingredients do not include the substances
mentioned above.

 If you use a liquid car freshener, do not spill the liquid

onto the vehicle’ s interior surfaces. It may contain the
ingredients mentioned above. Immediately clean any
spill using the method mentioned above.

If you have any questions about the cleaning of your
Lexus, your local Lexus dealer will be pleased to answer
them.

445

SECTION 7

REPORTING SAFETY DEFECTS
FOR U.S. OWNERS

Reporting safety defects for U.S. owners . . . . . . . . . . . . . . . .

447

446

REPORTING SAFETY DEFECTS

FOR U.S. OWNERS

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 Toyota Motor Sales,
U.S.A., Inc. (Toll–free: 1–800–25–LEXUS).

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 dealer, or Toyota Motor Sales,
U.S.A., Inc.

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.

KEYS AND DOORS

447

378

SECTION 6 – 3

SERVICE PROCEDURES AND
SPECIFICATIONS

Chassis

Specifications (GS400) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

380

Specifications (GS300) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

382

Checking brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

384

Checking power steering fluid (GS400) . . . . . . . . . . . . . . . . .

386

Checking power steering fluid (GS300) . . . . . . . . . . . . . . . . .

388

Checking tire pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

392

Rotating tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

394

Checking and replacing tires . . . . . . . . . . . . . . . . . . . . . . . . . .

394

Installing snow tires and chains . . . . . . . . . . . . . . . . . . . . . . .

397

Replacing wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

400

Aluminum wheel precautions . . . . . . . . . . . . . . . . . . . . . . . . .

400

Suspension and chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

401

CHASSIS

379

CHASSIS

SPECIFICATIONS (GS400)

– AUTOMATIC TRANSMISSION

Fluid capacity

Drain and refill

Fluid type

– DIFFERENTIAL

1.9 L (2.0 qt., 1.7 lmp.qt.)
Automatic transmission fluid Type T – IV or equivalent

Oil capacity
Oil type
Oil viscosity

– BRAKES

Pedal clearance *
Pedal freeplay
Brake pad wear limit
Parking brake lining wear limit
Parking brake adjustment *
Fluid type

*1: Minimum pedal clearance when depressed with the pressure of 196 N (20 kgf, 44 lbf.) with the engine running
*2: Parking brake adjustment when depressed with the pressure of 294 N (30 kgf, 66.1 lbf.)

380

1

2

1.35 L (1.42 qt., 1.19 lmp.qt.)
Hypoid gear oil API GL–5
Above –18C (0F): SAE 90

Below –18C (0F): SAE 80W or SAE 80W–90

93 mm (3.7 in.) Min.

0.2 – 2 mm (0.008 – 0.08 in.)

1.0 mm (0.04 in.)

1.0 mm (0.04 in.)
7 – 9 clicks
SAE J1703 or FMVSS No. 116 DOT 3

– STEERING

CHASSIS

Freeplay
Power steering fluid

– TIRES AND WHEELS

Tire size

Tire inflation pressure

Recommended cold tire inflation pressure

225/55R16 94V
235/45ZR17

Wheel size

Wheel nut torque

Less than 30 mm (1.2 in.)
Automatic transmission fluid DEXRON



II or III

Type A: 225/55R16 94V
Type B: 235/45ZR17

2

or bar, 32 psi)

Front 220 kPa (2.2 kgf/cm
Rear 220 kPa (2.2 kgf/cm
Front 230 kPa (2.3 kgf/cm
Rear 230 kPa (2.3 kgf/cm

2

or bar, 32 psi)

2

or bar, 33 psi)

2

or bar, 33 psi)

For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add 70
kPa (0.8 kgf/cm

2

, 0.7 bar, 10 psi) to the front tires and rear
tires, but never exceed the maximum cold tire pressure
molded on the tire sidewall.

Type A: 16 x 7

1/2 JJ

Type B: 17 x 8 JJ
103 N·m (10.5 kgf·m, 76 ft·lbf.)

381

CHASSIS

SPECIFICATIONS (GS300)

– AUTOMATIC TRANSMISSION

Fluid capacity

Drain and refill

Fluid type

– DIFFERENTIAL

1.9 L (2.0 qt., 1.7 lmp.qt.)
Automatic transmission fluid Type T – IV or equivalent

Oil capacity
Oil type
Oil viscosity

1.35 L (1.42 qt., 1.19 lmp.qt.)
Hypoid gear oil API GL–5
Above –18C (0F): SAE 90

Below –18C (0F): SAE 80W or SAE 80W–90

– BRAKES

Pedal clearance *

1

Pedal freeplay
Brake pad wear limit
Parking brake lining wear limit
Parking brake adjustment *

2

Fluid type

93 mm (3.7 in.) Min.

0.2 – 2 mm (0.008 – 0.08 in.)

1.0 mm (0.04 in.)

1.0 mm (0.04 in.)
7 – 9 clicks
SAE J1703 or FMVSS No. 116 DOT 3

*1: Minimum pedal clearance when depressed with the pressure of 196 N (20 kgf, 44 lbf.) with the engine running

2

: Parking brake adjustment when depressed with the pressure of 294 N (30 kgf, 66.1 lbf.)

*

– STEERING

382

CHASSIS

Freeplay
Power steering fluid

– TIRES AND WHEELS (Type A)

Tire size
Tire inflation pressure

Recommended cold tire inflation pressure

Wheel size
Wheel nut torque

– TIRES AND WHEELS (Type B)

Less than 30 mm (1.2 in.)
Automatic transmission fluid DEXRON



II or III

P215/60R16 94V

2

or bar, 30 psi)

Front 210 kPa (2.1 kgf/cm
Rear 210 kPa (2.1 kgf/cm

2

or bar, 30 psi)

For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add 90
kPa (1.0 kgf/cm

2

, 0.9 bar, 13 psi) to the front tires and rear
tires, but never exceed the maximum cold tire pressure
molded on the tire sidewall.

1/2 JJ

16 x 7
103 N·m (10.5 kgf·m, 76 ft·lbf.)

383

CHASSIS

Tire size
Tire inflation pressure

Recommended cold tire inflation pressure

Wheel size
Wheel nut torque

CHECKING BRAKE FLUID

63G002–1

225/55R16 94V

2

or bar, 32 psi)

Front 220 kPa (2.2 kgf/cm
Rear 220 kPa (2.2 kgf/cm

For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add 80
kPa (0.9 kgf/cm
tires, but never exceed the maximum cold tire pressure
molded on the tire sidewall.

1/2 JJ

16 x 7
103 N·m (10.5 kgf·m, 76 ft·lbf.)

2

, 0.8 bar, 12 psi) to the front tires and rear

2

or bar, 32 psi)

384

CHASSIS

To check the fluid level, simply look at the see–through
reservoir. The level should be between the ”MAX” and
”MIN” lines on the tank.

It is normal for the brake fluid level to go down slightly as the
brake pads wear or when the fluid level in the accumulator is
high.

If the reservoir needs frequent refilling, it may indicate a
serious mechanical problem.

If the level is low, add FMVSS No.116 DOT 3 or SAE
J1703 brake fluid to the brake reservoir.

Refilling brake fluid:

1. Turn the ignition switch off.

2. Depress the brake pedal more than 40 times.

3. Remove the reservoir cover by hand. Add brake fluid up
to the ”MAX” line.

CAUTION

Take care when filling the reservoir because brake fluid can
harm your eyes and damage painted surfaces. If fluid gets in
your eyes, flush your eyes with clean water.

If you do not follow the procedure above, the reservoir may
overflow.

Use only newly opened brake fluid. Once opened, brake fluid
absorbs moisture from the air, and excess moisture can cause
a dangerous loss of braking efficiency.

385

CHASSIS

CHECKING POWER STEERING

FLUID (GS400)

63G003–1

Check the fluid level through the reservoir. If necessary,
add automatic transmission fluid DEXRON

If the vehicle has been driven around 80 km/h (50 mph) for
20 minutes (a little more in frigid temperatures), the fluid is
hot (60C – 80C or 140F – 175F). You may also check
the level when the fluid is cold (about room temperature,
10C – 30C or 50F – 85F) if the engine has not been run
for about five hours.

386



II or III.

63G006–1

1

If hot O.K. 2If hot add 3If cold O.K.



4

If cold add

Clean all dirt off the reservoir and look at the fluid level. If
the fluid is cold, the level should be in the ”COLD” range.
Similarly, if it is hot, the fluid level should be in the ”HOT”
range. If the level is at the low side of the appropriate range,
add automatic transmission fluid DEXRON
the level within the range.

To remove the filler cap, turn it counterclockwise and lift up.
To reinstall it, turn it clockwise. After replacing the filler cap,
visually check the steering box case, vane pump and hose
connections for leaks or damage.

CAUTION



II or III to bring

CHASSIS

The reservoir may be hot so be careful not to burn yourself.

387

CHASSIS

NOTICE

Avoid overfilling, or the power steering could be
damaged.

CHECKING POWER STEERING

FLUID (GS300)

388

63G004–1

CHASSIS

Check the fluid level on the dipstick. If necessary, add
automatic transmission fluid DEXRON

If the vehicle has been driven around 80 km/h (50 mph) for
20 minutes (a little more in frigid temperatures), the fluid is
hot (60C – 80C or 140F – 175F). You may also check
the level when the fluid is cold (about room temperature,
10C – 30C or 50F – 85F) if the engine has not been run
for about five hours.



II or III.

389

CHASSIS

63L003–1

1

If cold O.K. 2If hot O.K. 3Add fluid



1. Clean all dirt off the reservoir.

2. Remove the filler cap by turning it counterclockwise and
wipe the dipstick clean.

3. Reinstall the filler cap.

4. Remove the filler cap again and look at the fluid level. If
the fluid is cold, the level should be in the ”COLD” range on
the dipstick. Similarly, if it is hot, the fluid level should be in
the ”HOT” range. If the level is at the low side of either range,
add automatic transmission fluid DEXRON
the level within the range.

5. After replacing the filler cap, visually check the steering
box case, vane pump and hose connections for leaks or
damage.



II or III to bring

390

CAUTION

The reservoir may be hot so be careful not to burn yourself.

NOTICE

Avoid overfilling, or the power steering could be
damaged.

CHASSIS

391

CHASSIS

CHECKING TIRE PRESSURE

63G005

The recommended cold tire pressures, tire size and the
vehicle capacity weight are given on the label.

You should check the tire pressures every two weeks, or at
least once a month. And don’t forget the spare! The pressure
for the spare tire should be the same with that for the standard
tire. (See page 381 or 383.) Incorrect tire pressure can reduce
tire life and make your vehicle less safe to drive.

Low tire pressure results in excessive wear, poor handling,
reduced fuel economy, and the possibility of blowouts from
overheated tires. Also, low tire pressure can cause poor
sealing of the tire bead. If the tire pressure is excessively low ,
there is the possibility of wheel deformation and/or tire
separation. So keep your tire pressures at the proper level. If
a tire needs frequent refilling, have it checked by your Lexus
dealer.

392

High tire pressure produces a harsh ride, handling problems,
excessive wear at the center of the tire tread, and a greater
possibility of tire damage from road hazards.

The following instructions for checking tire pressure should
be observed:

 The pressur e should be checked only when the tir es are

cold. If your vehicle has been parked for at least 3 hours

and has not been driven for more than 1.5 km or 1 mile
since, you will get an accurate cold tire pressure reading.

 Always use a tire pressure gauge. The appearance of the

tire can be misleading. Besides, tire pressures that are even
just a few pounds off can degrade handling and ride.

 Do not bleed or reduce tire pressure after driving. It is

normal for the tire pressure to be higher after driving.

 Never exceed the vehicle capacity weight. The

passengers and luggage weight should be located so that
the vehicle is balanced.

 Be sure to r einstall the tire valve caps. W ithout the valve

caps, dirt or moisture could get into the valve core and
cause air leakage. If the caps have been lost, have new
ones put on as soon as possible.

CHASSIS

393

CHASSIS

ROTATING TIRES

63L008-1

To equalize tire wear and help extend tire life, Lexus
recommends that you rotate your tires approximately
every 12000 km (7500 miles). However, the most
appropriate timing for tire rotation may vary according
to your driving habits and road surface conditions.

The wheel assemblies must be rotated as illustrated above.
When rotating tires, check for uneven wear and damage.

Abnormal wear is usually caused by incorrect tire pressure,
improper wheel alignment, out–of balance wheels, or severe
braking.

Before storing radial, snow or studded tires, mark the
direction of rotation and be sure to install them in the same
direction when using them again. Tires should be stored in a
cool dry place.

394

CHECKING AND REPLACING

TIRES

When to replace your tires

63G001

1

New tread 2Tread wear indicator



3

Worn tread

Replace the tires when the tread wear indicators show.
The location of the tread wear indicators is shown by the
”TWI” or ”

The tires on your Lexus have built–in tread wear indicators to
help you know when the tires need replacement. When the
tread depth wears to 1.6 mm (0.06 in.) or less, the indicators
will appear. If you can see the indicators in two or more
adjacent grooves, the tire should be replaced.

∆” marks molded on the sidewall of each tire.

CHASSIS

395

CHASSIS

Vehicles equipped with 235/45ZR17 tires: Y our Lexus has

been fitted with specially developed tires which provide
exceptional dynamic performance under general road
conditions. However your riding comfort may worsen a little
and road noise may increase during driving. You may also
notice that your tires will wear more rapidly and tire grip
performance will be reduced on the snowy and/or icy roads
when compared to standard tires. Be sure to have snow tires
or tire chains on the snowy and/or icy roads and drive
carefully with the speed appropriate for road conditions.

The effectiveness of snow tires is lost if the tread wears
down below 4 mm (0.16 in.).

If you have tire damage such as cuts, splits, cracks deep
enough to expose the fabric, or bulges indicating internal
damage, the tire should be replaced.

If a tire often goes flat or cannot be properly repaired due to
the size or location of a cut or other damage, it should be
replaced. If you are not sure, consult with your Lexus dealer.

If an air loss occurs while driving, do not continue driving
with a deflated tire. Driving even a short distance can damage
a tire beyond repair.

Any tires which are over 6 years old must be checked by
a qualified technician even if damage is not obvious.

Tires deteriorate with age even if they have never or seldom
been used.

This also applies to the spare tire and tires stored for future
use.

Uniform tire quality grading

This information has been prepared in accordance with
regulations issued by the National Highway Traffic Safety
Administration of the U.S. Department of
Transportation. It provides the purchasers and/or
prospective purchasers of Lexus vehicles with
information on uniform tire quality grading.

Your Lexus dealer will help answer any questions you may
have as you read this information.

DOT quality grades – All passenger vehicle tires must
conform to Federal Safety Requirements in addition to
these grades. These quality grades are molded on the
sidewall.

Treadwear – The treadwear grade is a comparative rating

based on the wear rate of the tire when tested under controlled
conditions on a specified government test course. For
example, a tire graded 150 would wear one and a half (1 – 1/2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual
conditions of their u s e , however, and may depart significantly
from the norm due to variations in driving habits, service
practices and differences in road characteristics and climate.

Traction A, B, C – The traction grades, from highest to
lowest, are A, B and C, and they represent the tire’ s ability to
stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt
and concrete. A tire marked C may have poor traction
performance.

396

CHASSIS

Warning: The traction grade assigned to this tire is based on
braking (straight ahead) traction tests and does not include
cornering (turning) traction.

Temperature A, B, C – The temperature grades are A (the
highest), B, and C, representing the tire’s resistance to the
generation of heat and its ability to dissipate heat when tested
under controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the material
of the tire to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure. The grade C
corresponds to a level of performance which all passenger car
tires must meet under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum
required by law.

W arning: The temperature grade of this tire established for a
tire that is properly inflated and not overloaded. Excessive
speed, underinflation, or excessive loading, either separately
or in combination, can cause heat buildup and possible tire
failure.

Tire selection

When replacing a tire, use only the same size and
construction as originally installed and with the same or
greater load capacity.

Using any other size or type of tire may seriously affect
handling, ride, speedometer/odometer calibration, ground
clearance, and clearance between the body and tires or snow
chains.

Do not mix radial, belted, or conventional tires on your
vehicle.

Do not use tires or wheels other than the manufacturer’s
recommended size.

It can cause dangerous handling characteristics, resulting in
loss of control. If you need to change from conventional tires
to radial tires or vice versa, replace them as a set.

INSTALLING SNOW TIRES AND

CHAINS

When to use snow tires or chains

Snow tires or chains are recommended when driving on
snow or ice.

On wet or dry roads, conventional or radial tires provide
better traction than snow or studded tires.

Snow tire selection

If you need snow tires, select the same size, construction
and load capacity as the original tires on your Lexus.

Do not use tires other than stated above. Since your vehicle
has radial tires as original equipment, make sure your snow
tires also have radial construction. Do not install studded tires
without first checking local regulations for possible
restrictions.

397

CHASSIS

Snow tire installation

Snow tires should be installed on all wheels.

Installing snow tires on the rear wheels only can lead to an
excessive difference in road grip capability between the front
and rear tires which could cause loss of vehicle control.

CAUTION

 Do not drive with the snow tires incorrectly inflated.
 Never drive over 120 km/h (75 mph) with any type of snow

tires.

Tire chain selection

Regulations regarding the use of tire chains vary
according to location or type of road. Always check the
local regulations before installing chains.

Use SAE Class ”S” type radial tire chains, with the exception
of radial cable chains or V–bar type chains.

Chain installation

Install the chains on the rear tires as tightly as possible.
Do not use tire chains on the front tires. Retighten chains
after driving 0.5 – 1.0 km (1/4 – 1/2 mile).

When installing chains on your tires, carefully follow the
instructions of the chain manufacturer.

398

CAUTION

 Do not exceed 50 km/h (30 mph) or the chain

manufacturer’s recommended speed limit, whichever is
lower.

 Drive carefully avoiding bumps, holes, and sharp turns,

which may cause the vehicle to bounce.

 Avoid sharp turns or locked–wheel braking, as use of

chains may adversely affect vehicle handling.

CHASSIS

399

CHASSIS

REPLACING WHEELS

When to replace your wheels

If you have wheel damage such as bends, cracks or heavy
corrosion, the wheel should be replaced.

If you fail to replace damaged wheels, a tire may slip off a
wheel or they may cause loss of handling control.

Replacement with used wheels is not recommended as they
may have been subjected to rough treatment or high mileage
and could fail without warning. Also, bent wheels which have
been straightened may have hidden structural damage and
therefore should not be used. Never use an inner tube in a
leaking wheel which is designed for a tubeless tire.

Wheel selection

When replacing wheels, care should be taken to ensure
that they are equivalent to those removed in load capacity,
diameter, rim width, and offset.

Correct replacement wheels are available at your Lexus
dealer.

A wheel of a different size or type may adversely affect
handling, wheel and bearing life, brake cooling,
speedometer/odometer calibration, stopping ability,
headlight aim, bumper height, vehicle ground clearance, and
tire or snow chain clearance to the body and chassis.

ALUMINUM WHEEL

PRECAUTIONS

 After driving your vehicle the first 1600 km (1000 miles),

check that the wheel nuts are tight.

 If you have rotated, repaired, or changed your tires, check

that the wheel nuts are still tight after driving 1600 km
(1000 miles).

 When using tire chains, be careful not to damage the

aluminum wheels.

 Use only the Lexus wheel nuts and wrench designed for

your aluminum wheels.

 When balancing your wheels, use only Lexus balance

weights or equivalent and a plastic or rubber hammer.

 As with any wheel, periodically check your aluminum

wheels for damage. If damaged, replace immediately.

400

SUSPENSION AND CHASSIS

CAUTION

Do not modify the suspension/chassis with lift kits, spacers,
springs, etc. It can cause dangerous handling characteristics,
resulting in loss of control.

CHASSIS

401

CHASSIS

402

SECTION 6 – 2

SERVICE PROCEDURES AND
SPECIFICATIONS

Engine

Specifications (GS400) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

361

Specifications (GS300) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

364

Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

367

Facts about engine oil consumption . . . . . . . . . . . . . . . . . . . .

369

Used engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

370

Checking the engine oil level . . . . . . . . . . . . . . . . . . . . . . . . .

371

Checking the engine coolant level . . . . . . . . . . . . . . . . . . . . .

376

Spark plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

377

360

SPECIFICATIONS (GS400)

– GENERAL

ENGINE

Model
Type
Bore and stroke
Displacement
Valve clearance (engine cold)

Intake
Exhaust

Drive belt tension

– LUBRICATION SYSTEM

1UZ–FE
8 cylinder V type, 4 cycle, gasoline

87.5 X 82.5 mm (3.44 X 3.25 in.)
3969 cm

0.15 – 0.25 mm (0.006 – 0.010 in.)

0.25 – 0.35 mm (0.010 – 0.014 in.)
Automatic adjustment

3

(242.1 cu.in.)

361

ENGINE

Oil capacity

Drain and refill

with filter
without filter

Oil grade

Recommended oil viscosity (SAE):

– COOLING SYSTEM

5.2 L (5.5 qt., 4.6 lmp.qt.)

4.9 L (5.2 qt., 4.3 lmp.qt.)
API SH, ”Energy–Conserving II” or SJ,
”Energy–Conserving” multigrade engine oil or ILSAC
multigrade engine oil

Capacity
Coolant type

– FUEL

Fuel type
Octane rating

– IGNITION SYSTEM

362

9.3 L (9.8 qt., 8.2 lmp.qt.)
Ethylene – glycol coolant (Do not use alcohol type.)

62L005–1

Only UNLEADED
91 (Research octane number 96) or higher

Temperature range anticipated before next oil change

ENGINE

Spark plug – Make DENSO

NGK

– Gap

– ELECTRICAL SYSTEM

Battery – Maintenance type battery

Specific gravity reading at 20C (68F):

Charging rates Quick charge

– Non–maintenance battery

Open voltage at 20C (68F):

Charging rates

Slow charge

SK20R11
IFR6A11

1.1 mm (0.043 in.)

1.260 Fully charged

1.160 Half charged

1.060 Discharged
15A max.

5A max.

12.7V Fully charged

12.3V Half charged

11.9V Discharged
[Voltage that is checked 20 minutes after the key is
removed with all the lights turned off]

5A max.

363

ENGINE

SPECIFICATIONS (GS300)

– GENERAL

Model
Type
Bore and stroke
Displacement
Valve clearance (engine cold)

Intake
Exhaust

Drive belt tension

– LUBRICATION SYSTEM

364

2JZ–GE
6 cylinder in line, 4 cycle, gasoline

86.0 X 86.0 mm (3.39 X 3.39 in.)
2997 cm

0.15 – 0.25 mm (0.006 – 0.010 in.)

0.25 – 0.35 mm (0.010 – 0.014 in.)
Automatic adjustment

3

(182.9 cu.in.)

Oil capacity

Drain and refill

with filter
without filter

Oil grade

Recommended oil viscosity (SAE):

– COOLING SYSTEM

ENGINE

5.4 L (5.7 qt., 4.8 lmp.qt.)

5.1 L (5.4 qt., 4.5 lmp.qt.)
API SH, ”Energy–Conserving II” or SJ,
”Energy–Conserving” multigrade engine oil or ILSAC
multigrade engine oil

Capacity
Coolant type

– FUEL

Fuel type
Octane rating

– IGNITION SYSTEM

7.7 L (8.1 qt., 6.8 lmp.qt.)
Ethylene – glycol coolant (Do not use alcohol type.)

62L005–1

Only UNLEADED
91 (Research octane number 96) or higher

Temperature range anticipated before next oil change

365

ENGINE

Spark plug – Make DENSO

NGK

– Gap

– ELECTRICAL SYSTEM

Battery – Maintenance type battery

Specific gravity reading at 20C (68F):

Charging rates Quick charge

– Non–maintenance battery

Open voltage at 20C (68F):

Charging rates

Slow charge

PK16TR11
BKR5EKPB11

1.1 mm (0.043 in.)

1.260 Fully charged

1.160 Half charged

1.060 Discharged
15A max.

5A max.

12.7V Fully charged

12.3V Half charged

11.9V Discharged
[Voltage that is checked 20 minutes after the key is
removed with all the lights turned off]

5A max.

366

ENGINE

FUEL

Fuel type

Your vehicle must use only unleaded gasoline.

To help prevent gas station mixups, your Lexus has a smaller
fuel tank opening. The special nozzle on pumps with
unleaded fuel will fit it, but the larger nozzle on pumps with
leaded gas will not.

At a minimum, the gasoline you use should meet the
specifications of ASTM D4814 in the U.S.A. and CGSB

3.5–M93 in Canada.

NOTICE

Do not use leaded gasoline. Use of leaded gasoline will
cause the three–way catalytic converter to lose its
effectiveness and the emission control system to function
improperly. Also, this can increase maintenance costs.

Octane rating

Select premium unleaded gasoline with an Octane Rating
of 91 (Research Octane Number 96) or higher for
optimum engine performance. However, if such premium
type cannot be obtained, you may temporarily use
unleaded gasoline with an Octane Rating as low as 87
(Research Octane Number 91).

Use of unleaded fuel with an octane number or rating lower
than stated above will cause persistent heavy knocking. If
severe, this will lead to engine damage.

If your engine knocks ...

If you detect heavy knocking even when using the
recommended fuel, or if you hear steady knocking while
holding a steady speed on level roads, consult your Lexus
dealer.

However, now and then, you may notice light knocking for a
short time while accelerating or driving up hills. This is no
cause for concern.

Gasolines containing detergent additives

Lexus recommends use of gasolines that contain detergent
additives to avoid build–up of engine deposits.

For further details, ask your Lexus dealer or a local gasoline
retailer.

367

ENGINE

Improved gasolines

The American Automobile Manufacturers Association
(AAMA) has developed a specification of improved
gasolines. The AAMA specification offers optimal fuel
information for better vehicle performance and better
protection of your engine.

Lexus recommends the use of gasolines that meet the AAMA
specification, if available, for improved drivability and
emission control system.

Gasolines containing MTBE

Gasolines that contain MTBE (Methyl Tertiary–Butyl
Ether) are available in the market. If you use a gasoline
mixed with MTBE, make certain that it does not contain
more than 15% of MTBE.

If the use of gasolines containing MTBE causes poor
drivability and/or poor fuel economy, you should stop using
them.

Gasolines containing MMT

Some gasolines contain an octane–enhancing additive
called MMT (methylcyclopentadienyl manganese
tricarbonyl).

Lexus does not recommend the use of gasolines that contain
MMT. If fuels containing MMT are used, your emission
control system may be adversely affected. The Malfunction
Indicator Lamp on the instrument cluster may come on. If this

happens, contact your Lexus dealer for service.

Gasolines containing alcohol

Gasohol is a mixture of gasoline and ethanol. If you use
gasohol in your Lexus, be sure that it is unleaded, has an
octane rating no lower than 87 and does not contain more
than 10% ethanol. Lexus does not recommend the use of
gasolines containing methanol.

If you use gasoline containing methanol, use only gasoline
meeting the requirements above and also containing less than
5% methanol with cosolvents and corrosion inhibitors for
methanol.

NOTICE

 Do not use gasohol other than stated above. It will

cause fuel system damage or vehicle performance
problems.

 If drivability problems are encountered (poor hot

starting, vaporizing, engine knock, etc.), discontinue
its use.

 Take care not to spill gasohol during refueling.

Gasohol may cause paint damage.

Fuel tank capacity

75 L (19.8 gal., 16.5 lmp.gal.)

368

ENGINE

FACTS ABOUT ENGINE OIL

CONSUMPTION

Functions of engine oil

Engine oil has the primary function of lubricating and cooling
the inside of the engine, and plays a major role in maintaining
the engine in proper working order.

Engine oil consumption

It is normal that an engine should consume some engine
oil during normal engine operation. The causes of oil
consumption in a normal engine are as follows.

 Oil is used to lubricate pistons, piston rings and cylinders.

A thin film of oil is left on the cylinder wall when a piston
moves downwards in the cylinder. High negative pressure
generated when the vehicle is decelerating sucks some of
this oil into the combustion chamber. This oil as well as
some part of the oil film left on the cylinder wall is burned
by the high temperature combustion gases during the
combustion process.

 Oil is also used to lubricate the stems of the intake valves.

Some of this oil is sucked into the combustion chamber
together with the intake air and is burned along with the
fuel. High temperature exhaust gases also burn the oil
used to lubricate the exhaust valve stems.

The amount of engine oil consumed depends on the
viscosity of the oil, the quality of the oil and the way the
vehicle is driven.

More oil is consumed under driving conditions such as high
speeds and frequent acceleration and deceleration.

A new engine consumes more oil, since its pistons, piston
rings and cylinder walls have not become conditioned.

When judging the amount of oil consumption, keep in
mind that the oil may have become diluted, making it
difficult to judge the true level accurately.

For example, if a vehicle is used for repeated short trips and
consumes a normal amount of oil, the dipstick may not show
any drop in the oil level at all, even after 1000 km (600 miles)
or more. This is because the oil is gradually becoming diluted
with fuel or moisture, making it appear that the oil level has
not changed.

The diluting ingredients evaporate out when the vehicle is
then driven at high speeds, as on an expressway, making it
appear that oil is excessively consumed after driving at high
speeds.

369

ENGINE

Importance of engine oil level check

One of the most important points in proper vehicle
maintenance is to keep the engine oil at the optimum level so
that oil fun ction will not be impaired. Therefore, it is essential
that the oil level be checked regularly. Lexus recommends
that the oil level be checked every time you refuel the vehicle.

NOTICE

Failure to check the oil level regularly could lead to
serious engine trouble due to insufficient oil.

For detailed information on oil level check, see ”Checking the
engine oil level” on page 371.

CAUTION

 Used engine oil contains potentially harmful contaminants

which may cause skin disorders such as inflammation or
skin cancer , s o c a re should be taken to avoid prolonged and
repeated contact with it. To remove used engine oil from
your skin, wash thoroughly with soap and water.

 Do not leave used oil within the reach of children.
 Dispose of used oil and used oil filters only in a safe and

acceptable manner. Do not dispose of used oil and used oil
filters in household trash, in sewers or onto the ground.
Call your Lexus dealer or a service station for information
concerning recycling or disposal.

USED ENGINE OIL

370

CHECKING THE ENGINE OIL

LEVEL

62G005–1

GS400 GS300

With the engine at operating temperature and turned off,
check the oil level on the dipstick.

1. To get a true reading, the vehicle should be on a level spot.
After turning off the engine, wait a few minutes for the oil to
drain back into the bottom of the engine.

2. Pull out the dipstick, and wipe it clean with a rag.

3. Reinsert the dipstick and push it in as far as it will go, or
the reading will not be correct.

ENGINE

371

ENGINE

62G006–1

1

Add oil 2O.K. 3Too full

4. Pull the dipstick out and look at the oil level on the end.
If it is between the full level mark (

4

mark (

), it is O.K.

5

) and the low level

372

62G007–1

GS400 GS300

If the oil level is below or only slightly above the low level
mark, add engine oil of the same type as already in the
engine.

Remove the oil filler cap and add engine oil a little at a time,
checking the dipstick. The approximate quantity of oil
needed to fill between the low level mark and the full level
mark on the dipstick is indicated below for reference.

When the level reaches within the correct range, return the
filler cap and turn the cap clockwise until you hear a click.

Oil quantity. L (qt., lmp. qt.) 1.8 (1.9, 1.6)

ENGINE

NOTICE

Avoid overfilling, or the engine could be damaged. Check
the oil level on the dipstick once again after adding the oil.

373

ENGINE

Engine oil selection

Use API SH, ”Energy–Conserving II” or SJ,
”Energy–Conserving” multigrade engine oil or ILSAC
multigrade engine oil.

Recommended viscosity (SAE):

62L005–1

Temperature range anticipated before next oil change

SAE 5W–30 is the best choice for your vehicle, for good
fuel economy, and good starting in cold weather.

If you use SAE 10W–30 engine oil in extremely low
temperatures, the engine may become difficult to start, so
SAE 5W–30 engine oil is recommended.

374

Oil identification marks

62L006–1

API Service Symbol  ILSAC Certification
Mark

Either or both API registered marks are added to some oil
containers to help you select the oil you should use.

 The API Service Symbol is located anywhere on the

outside of the container.
The top portion of the label shows the oil quality by API

(American Petroleum Institute) designation such as SJ.
The center portion of the label shows the SAE viscosity
grade such as SAE 5W–30. ”Ener gy–Conserving”, shown
in the lower portion, indicates that the oil has fuel–saving
capabilities.

 The ILSAC (International Lubricant Standardization and

Approval Committee) Certification Mark is displayed on
the front of the container.

ENGINE

375

ENGINE

CHECKING THE ENGINE

COOLANT LEVEL

62G004–1

1

Reservoir cap 2Upper line 3Lower line



Park the vehicle at a level spot and look at the see–through
coolant reservoir when the engine is cool. The coolant
level is satisfactory if it is between the upper and lower
lines on the tank. If the level is low, add ethylene–glycol
type coolant.

The coolant level in the reservoir will vary with engine
coolant temperature. However, if the level is on or below the
lower line, add coolant to bring the level up to the upper line.

Use only ethylene–glycol type coolant. It will prevent
freezing and corrosion. Neither supplemental inhibitors nor
additives are needed nor recommended. (For information on
ethylene–glycol coolant, see also ”Engine coolant selection”
described below.)

If the coolant level drops within a short time after
replenishing, there may be a leak in the system. Visually
check the radiator, hoses, radiator cap, drain cock and water
pump.

If you can find no leak, have your Lexus dealer test the cap
pressure and check for leaks in the cooling system.

376

CAUTION

To prevent burning yourself, do not remove the radiator cap
when the engine is hot.

ENGINE

Engine coolant selection

Your coolant must contain ethylene–glycol antifreeze. In
addition to preventing freezing and subsequent damage to the
engine, this will also prevent corrosion. Further supplemental
inhibitors or additives are neither needed nor recommended.

Read the antifreeze container for information on freeze
protection. Follow the manufacturer’s directions for how
much to mix with water. The total capacity of the cooling
system is given on page 362. We recommend 50% solution
be used for your Lexus, or a sufficient quantity to provide
protection to about –35C (–31F).

NOTICE

Do not use alcohol type antifreeze or plain water alone.

62G008

Your engine is fitted with twin ground electrode spark

SPARK PLUGS

GS400

Your engine is fitted with iridium–tipped spark plugs.

NOTICE

Use only iridium–tipped spark plugs for your engine
performance and smooth drivability.

GS300

377

plugs.

NOTICE

Use only twin ground electrode spark plugs for your
engine performance.

SECTION 6 – 1

SERVICE PROCEDURES AND
SPECIFICATIONS

Introduction

Vehicle identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

351

Engine compartment overview (GS400) . . . . . . . . . . . . . . . .

353

Engine compartment overview (GS300) . . . . . . . . . . . . . . . .

354

Do–it–yourself service precautions . . . . . . . . . . . . . . . . . . . . .

355

Parts and tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

357

350

VEHICLE IDENTIFICATION

61G005

The vehicle identification number (VIN) is the legal
identifier for your vehicle. This number is on the left top
of the instrument panel and can be seen through the
windshield from outside.

This is the primary identification number for your Lexus. It
is used in registering the ownership of your vehicle.

INTRODUCTION

351

INTRODUCTION

61G006

The vehicle identification number (VIN) is also on the
Certification Label.

61G007–2

GS400 GS300

The engine number is stamped on the engine block as
shown.

352

ENGINE COMPARTMENT OVERVIEW (GS400)

61G008–2

INTRODUCTION

1 Engine oil

filler cap

2 Engine oil

level dipstick

3 Brake fluid

reservoir

4 Fuse box
5 Washer fluid

tank

6 Engine

coolant
reservoir

7 Power

steering fluid
reservoir

8 Fuse box
9 Battery

353

INTRODUCTION

ENGINE COMPARTMENT OVERVIEW (GS300)

61G004–3

1 Engine oil

filler cap

2 Engine oil

level dipstick

3 Brake fluid

reservoir

4 Fuse box
5 Washer fluid

tank

6 Power

steering fluid
reservoir

7 Engine

coolant
reservoir

8 Fuse box
9 Battery

354

DO–IT–YOURSELF SERVICE

PRECAUTIONS

If you perform maintenance yourself, be sure to follow the
correct procedure given in this Section.

You should be aware that improper or incomplete servicing
may result in operating problems.

Performing do–it–yourself maintenance during the warranty
period may affect your warranty coverage. Read the separate
Lexus Warranty statement for details and suggestions.

This Section gives instructions only for those items that are
relatively easy for an owner to perform. As explained in
Section 5, there are still a number of items that must be
performed by a qualified technician with special tools.

For information on tools and parts for do–it–yourself
maintenance, see ”Parts and tools”.

Utmost care should be taken when working on your vehicle
to prevent accidental injury. Here are a few precautions that
you should be especially careful to observe:

INTRODUCTION

355

INTRODUCTION

CAUTION

 When the engine is running, keep hands, clothing, and tools

away from the moving fan and engine drive belt.
(Removing rings, watches, and ties is advisable.)

 Right after driving, the engine compartment – the engine,

radiator, exhaust manifold and power steering fluid
reservoir, etc. – will be hot. So be careful not to touch them.
Oil and other fluids may also be hot.

 Do not smoke, cause sparks or allow open flames around

fuel or the battery. Their fumes are flammable.

 Be extremely cautious when working on the battery. It

contains poisonous and corrosive sulfuric acid.

 Do not get under your vehicle with just the body jack

supporting it. Always use automotive jack stands or other
solid supports.

 Be sure the ignition is off if you work near the electric

cooling fan or radiator grille. With the ignition on, the
electric cooling fan may automatically start to run if the air
conditioning is on and/or if the coolant temperature is high.

 Use eye protection whenever you work on or under your

vehicle where you may be exposed to flying or falling
material, fluid spray, etc.

356

INTRODUCTION

NOTICE

 Remember that battery and ignition cables carry high

currents or voltages. Be careful of accidentally
causing a short circuit.

 Before closing the engine hood, check to see that you

have not forgotten any tools, rags, etc.

 Do not drive with the air cleaner removed, or excessive

engine wear could result. Also backfiring could cause
a fire in the engine compartment.

 Do not overfill automatic transmission fluid, or the

transmission could be damaged.

 Be careful not to scratch the glass surface with the

wiper frame.

PARTS AND TOOLS

Here is a list of parts and tools you will need to perform
do–it–yourself maintenance. Remember all Lexus parts are
designed in metric sizes, so your tools must be metric.

Checking the engine oil level

Parts (if level is low):

 Use API grade SH, ”Energy–Conserving II” or SJ,

”Energy–Conserving” multigrade engine oil or ILSAC
multigrade engine oil. For recommended oil viscosity, see
page 374.

Tools:

 Rag or paper towel
 Funnel (only for adding oil)

Checking the engine coolant level

Parts (if level is low):

 Ethylene–glycol coolant
 Demineralized or distilled water

Tools:

 Funnel (only for adding coolant)

357

INTRODUCTION

Checking brake fluid

Parts (if level is low):

 FMVSS No. 116 DOT 3 or SAE J1703 brake fluid

Tools:

 Funnel (only for adding fluid)

Checking power steering fluid

Parts (if level is low):



 Automatic transmission fluid DEXRON

Tools:

 Rag or paper towel
 Funnel (only for adding fluid)

II or III

Checking battery condition

Non–maintenance batteries
Tools:

 Warm water
 Baking soda
 Grease
 Conventional wrench (for terminal clamp bolts)

Maintenance type batteries
Parts (if level is low):

 Distilled water

Tools:

 Warm water
 Baking soda
 Grease
 Conventional wrench (for terminal clamp bolts)
 Coin (for vent plugs)
 Funnel (only for adding distilled water)

Checking and replacing the blade type fuses

Parts (if replacement is necessary):

 Fuse with same amperage rating as original

Checking the cartridge type fuses

Parts (if replacement is necessary):

 Genuine Lexus fuse or equivalent with same amperage

rating as original

358

Adding washer fluid

Parts:

 Water
 Washer fluid containing antifreeze (for winter use)

Tools:

 Funnel

INTRODUCTION

359

SECTION 5

MAINTENANCE

Maintenance requirements . . . . . . . . . . . . . . . . . . . . . . . . . . .

343

General maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

345

Does your vehicle need repairing? . . . . . . . . . . . . . . . . . . . . .

348

For scheduled maintenance information, please
refer to the separate ”Owner’s Manual
Supplement/ Maintenance Schedule”.

342

MAINTENANCE

MAINTENANCE

REQUIREMENTS

Your Lexus vehicle has been designed to have fewer
maintenance requirements with longer service intervals to
save both your time and money. However, each regular
maintenance as well as day–to–day care is more important
than ever before to ensure smooth, trouble–free, safe, and
economical driving.

It is the owner’s responsibility to make sure the specified
maintenance, including general maintenance services, is
performed. Note that both the new vehicle and emission
control system warranties specify that proper maintenance
and care must be performed. See the Owner’s Guide,
Owner’s Manual Supplement or Warranty Booklet for
complete warranty information.

General maintenance

General maintenance items are those day–to–day care
practices that are important to your vehicle for proper
operation. It is the owner’s responsibility to ensure that the
general maintenance items are performed regularly.

These checks or inspections can be done either by yourself or
your Lexus dealer.

Scheduled maintenance

The scheduled maintenance items listed in the ”Owner’s
Manual Supplement/Maintenance Schedule” are those
required to be serviced at regular intervals.

343