2004 Lexus GX470 Engine / LEXUS 2004 GX470 FROM JAN. 2004 THROUGH JUL. 2004 PROD. OWNER'S MANUAL (OM60A87U)

ENGINE
549
NOTICE
Do not use plain water alone.
Lexus recommends Toyota Super Long Life Coolantº, which
has been tested to ensure that it will not cause corrosion nor
result in malfunction of your engine coolant system with proper
usage. Toyota Super Long Life Coolantº is formulated with
long- life hybrid organic acid technology and has been
specifically designed to avoid engine cooling system
malfunction on Lexus vehicles.
Please contact your Lexus dealer for further details.CHECKING THE RADIATOR AND CONDENSER
If either of the above parts are extremely dirty or you are not
sure of their condition, take your vehicle to a Lexus dealer.
CAUTION
To prevent burning yourself, be careful not to touch the
radiator or condenser when the engine is hot.
NOTICE
To prevent damage to the radiator and condenser, do
not perform the work by yourself.

ENGINE
550
SPARK PLUGSYour engine is fitted with iridium-tipped spark plugs.
NOTICE
Use only iridium-tipped spark plugs and do not adjustgaps for your engine performance and smoothdrivability.

SECTION 6 ± 3
551
SERVICE PROCEDURES AND
SPECIFICATIONS
Chassis
Specifications552
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Checking brake fluid 556
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Checking power steering fluid 557
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Checking tire inflation pressure 559
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Tire information 563
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Types of tires 572
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Rotating tires 573
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Checking and replacing tires 574
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Installing snow tires and chains 576
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Replacing wheels 581
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Aluminum wheel precautions 582
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Suspension and chassis 582
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CHASSIS
552
SPECIFICATIONS
Ð DIFFERENTIALOil capacity Front
Rear
1.4 L (1.5 qt., 1.2 lmp. qt.)
3.1 L (3.3 qt., 2.7 lmp. qt.)
Oil typeHypoid gear oil API GL-5
Oil viscosityAbove -18C (0F): SAE 90 or SAE 85W-90
Below -18C (0F): SAE 80W or SAE 80W-90
Ð TRANSFER
Oil capacity
1.4 L (1.5 qt., 1.2 lmp. qt.)
Oil typeHypoid gear oil API GL-5
Recommended oil viscositySAE 75W-90

CHASSIS
553
Ð AUTOMATIC TRANSMISSION
Fluid capacity Drain and refill
Up to 3.0 L (3.2 qt., 2.6 lmp. qt.)
Fluid typeToyota Genuine ATF WS*
*: Change automatic transmission fluid only as necessary.
Generally, it is necessary to change automatic transmission
fluid only if your vehicle is driven under one of the Special
Operating Conditions listed in your Owner's Manual
Supplement/Scheduled Maintenanceº. When changing the
automatic transmission fluid, use only Toyota Genuine ATF
WSº (ATF JWS3324 or NWS9638) to aid in assuring optimum
transmission performance.

CHASSIS
554
NOTICE
Using automatic transmission fluid other than ToyotaGenuine ATF WSº may cause deterioration in shiftquality, locking up of your transmission accompaniedby vibration, and ultimately damage the automatictransmission of your vehicle.
Please contact your Lexus dealer for further details.
Ð BRAKES
Pedal clearance
55 mm (2.2 in.) Min. *1
Pedal free play1 Ð 6 mm (0.04 Ð 0.24 in.)
Brake pad wear limit1.0 mm (0.04 in.)
Parking brake lining wear limit1.0 mm (0.04 in.)
Parking brake adjustment5 Ð 7 clicks *2
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
*1: Minimum pedal clearance when depressed with the force of 490 N (50 kgf,\
110 lbf) with the engine running
*
2: Parking brake adjustment when pulled with the force of 196 N (20 kgf, 4\
4 lbf)

CHASSIS
555
Ð CHASSIS LUBRICATION
Propeller shafts Spiders
Slide yoke
Lithium base chassis grease, NLGI No.2
Molybdenum-disulfide lithium base chassis grease, NLGI No.2 or
lithium base chassis grease, NLGI No.2
Ð STEERING
Free play
Less than 30 mm (1.2 in.)
Power steering fluidAutomatic transmission fluid DEXRONII or III
Ð TIRES AND WHEELSTire size
P265/65R17 110S
Tire inflation pressure Recommended cold tire inflation
pressure
220 kPa (2.2 kgf/cm2 or bar, 32 psi)
Wheel size17 x 7 1/2 JJ
Wheel nut torque112 N´m (11.5 kgf´m, 83 ft´lbf)
NOTE:
For complete information on tires (e.g. replacing tires or replacing wh\
eels), see Checking tire inflation pressureº
through Aluminum wheel precautionsº on pages 559 through 582.

CHASSIS
556
CHECKING BRAKE FLUID
To check the fluid level, simply look at the see-through
reservoir. The level should be between the MAXº and
MINº 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 cap by hand. Add brake fluid up to the
MAXº line.
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.CAUTION
Take care when filling the reservoir because brake fluid
can harm your hands or eyes and damage painted
surfaces. If fluid gets in your eyes, flush them with clean
water immediately. If you still feel uncomfortable with
your eyes, go to the doctor.
NOTICE
If you spill some of the fluid, be sure to wipe it off to
prevent it from damaging the parts or paintwork.