2004 Lexus GX470 Audio System / LEXUS 2004 GX470 FROM NOV. 2003 THROUGH DEC. 2003 PROD. OWNER'S MANUAL (OM60A74U)

CHASSIS
552
NOTICE
Using automatic transmission fluid other than Toyota
Genuine ATF WSº may cause deterioration in shift
quality, locking up of your transmission accompanied
by vibration, and ultimately damage the automatic
transmission 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, 44 lbf)

CHASSIS
553 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 WHEELS
Tire 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 wheels), see Checking tire inflation pressureº
through Aluminum wheel precautionsº on pages 557 through 578.

CHASSIS
554
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.

CHASSIS
555
CHECKING POWER STEERING
FLUID
The power steering fluid reservoir is located under the
right side engine compartment cover. Before checking
the power steering fluid, remove the cover. (For details,
see Removing the engine compart coversº on page 526.)
Check the fluid level, simply look at the see-through
reservoir. If necessary, add automatic transmission fluid
DEXRON
II or III.
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
(60C - 80C or 140F - 175F). You may also check the level
when the fluid is cold (about room temperature, 10C - 30C
or 50F - 85F) if the engine has not been run for about five
hours.

1If cold O.K.2If cold add3If hot O.K.
4If hot add
Clean all dirt off the reservoir and look at the fluid level. If the
fluid is cold, the level should be in the COLDº range. Similarly,
if it is hot, the fluid level should be in the HOTº range. If the
level is at the low side of the appropriate range, add automatic
transmission fluid DEXRON
II or III to bring the level within
the range.
To remove the reservoir cap, turn it counterclockwise and lift
up. To reinstall it, turn it clockwise. After replacing the reservoir
cap, visually check the steering box case, vane pump and hose
connections for leaks or damage.

CHASSIS
556
CAUTION
The reservoir may be hot so be careful not to burn
yourself.
NOTICE
Avoid overfilling, or the power steering could be
damaged.
When adding the power steering fluid, avoid spilling
it. The generator under the power steering reservoir
could be damaged if fluid is spilled on it.

CHASSIS
557
CHECKING TIRE INFLATION
PRESSURE
63PY020
The recommended cold tire inflation pressures,
tire sizes and the combined weight of occupants
and cargo (vehicle capacity weight) are described
on page 553 and 606. They are also described
on the tire and loading information label as
shown.
You should check the tire inflation pressure every two
weeks, or at least once a month. And do not forget
the spare!
The following instructions for checking tire
inflation pressure should be observed:
The pressure should be checked only when the
tires 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 inflation pressure reading.
If you cannot adjust the tire pressure when the
tires are cold, add 20 to 30 kPa more to the front
tires and rear tires than the cold tire pressure, but
never exceed the maximum cold tire pressure
molded on the tire sidewall.
Always use a tire pressure gauge. The
appearance of a tire can be misleading. Besides,
tire inflation pressures that are even just a few
pounds off can degrade handling and ride.

CHASSIS
558
Do not bleed or reduce tire inflation pressure
after driving. It is normal for the tire inflation
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.Inspection and adjustment procedure

1Tire valve
2Tire pressure gauge
1. Remove the tire valve cap.
2. Press the tip of the tire pressure gauge to the tire
valve.
3. Read the pressure using a graduation of the gauge.
4. In case that the tire inflation pressure is not within
the prescribed range, insert the compressed air from
the valve. In case of applying too much air, press
the center of the valve and release the air to adjust.
5. After completing the tire inflation pressure
measurement and adjustment, apply soap water to
the valve and check the leakage.
6. Install the tire valve cap.

CHASSIS
559
If the gauge and the air pump are not available, have
your vehicle checked by your Lexus dealer.
CAUTION
Be sure to reinstall the tire valve caps. Without
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.
NOTICE
Use only the original valve cap. If any other
valve cap is used, it may corrode or melt and
become difficult or impossible to remove.
Incorrect tire inflation pressure may waste fuel, reduce
the comfort of driving, reduce tire life and make your
vehicle less safe to drive.
If a tire frequently needs refilling, have it checked by
your Lexus dealer.