engine Lexus GX470 2004 Engine / LEXUS 2004 GX470 THROUGH OCT. 2003 PROD. OWNER'S MANUAL (OM60A46U)

CHASSIS
530
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 500.)
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
540
Tire related terms
Cold tire inflation
pressureTire inflation pressure when the vehicle has been parked at least 3 hours or
more, or it has not been driven more than 1.5 km or 1 mile under that condition
Maximum inflation
pressureThe maximum cold inflation pressure to which a tire may be inflated and shown
on the sidewall of the tire
Recommended
inflation pressureCold tire inflation pressure recommended by a manufacturer
Accessory weightThe combined weight (in excess of those standard items which may be replaced)
of automatic transmission, power steering, power brakes, power windows, power
seats, radio, and heater, to the extent that these items are available as
factory-installed equipment (whether installed or not)
Curb weightThe weight of a motor vehicle with standard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so equipped, air conditioning and
additional weight optional engine
Maximum loaded
vehicle weightThe sum of Ð
(a) Curb weight;
(b) Accessory weight;
(c) Vehicle capacity weight; and
(d) Production options weight
Normal occupant
weight68 kg (150 lb.) times the number of occupants specified in the second column of
Table 1 that follows

CHASSIS
550
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 Ð 1.0 km (1/4 Ð 1/2 mile).
When installing chains on your tires, carefully follow the
instructions of the chain manufacturer.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.
When driving with chains installed, be sure to drive
carefully. Slow down before entering curves to avoid
losing control of the vehicle. Otherwise an accident
may occur.
NOTICE
When jacking up or installing tire chains, be sure to turn
off the rear height control air suspension with the
HEIGHT CONTROL OFFº switch and stop the engine.
Otherwise, the vehicle height may change because of
the automatic leveling function resulting in accident.

ELECTRICAL COMPONENTS
554
SPECIFICATIONS
Ð FUSE LOCATIONS
64PY003

1Engine compartment
2Driver's side instrument panel
Ð FUSES

Engine compartment

ELECTRICAL COMPONENTS
565
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.
If the battery is disconnected or run down
The power windows and moon roof may not operate
automatically and the jam protection function will not function
correctly after you reconnect, replace or recharge the battery.
In any of these cases, you should normalize the power
windows and moon roof. To normalize the power windows and
moon roof, see pages 45 and 104.
Checking battery condition
Check the battery condition by the indicator color.
1BLUE Ð Good condition.
2WHITE Ð Charging necessary. Have the battery
checked by your Lexus dealer.
3RED Ð Have the battery checked by your Lexus dealer.

ELECTRICAL COMPONENTS
567
BATTERY RECHARGING
PRECAUTIONS
During recharging, the battery is producing hydrogen
gas.
Therefore, before recharging:
1. If recharging with the battery installed on the vehicle, be
sure to disconnect the ground cable.
2. 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.
Only do a slow charge (5 A or less). Charging at a
quicker rate is dangerous. The battery may explode
causing personal injuries.
NOTICE
Never recharge the battery while the engine is running.
Also, make sure all accessories are turned off.

ELECTRICAL COMPONENTS
568
CHECKING AND REPLACING THE
BLADE TYPE FUSES
The engine compartment fuse box is located under the left
side engine compartment cover. Before checking the
engine compartment fuses, remove the cover. (For
details, see Removing the engine compartment coversº
on page 500.)

Engine compartment 1 Pull-out tool 2 Spare fuses

Driver's side instrument panel
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.

ELECTRICAL COMPONENTS
570It 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.
CHECKING THE CARTRIDGE TYPE
FUSES
The engine compartment fuse box is located under the left
side engine compartment cover. Before checking the
engine compartment fuses, remove the cover. (For
details, see Removing the engine compartment coversº
on page 500.)

Engine compartment

ELECTRICAL COMPONENTS
572
CAUTION
Always use a genuine Lexus fuse or equivalent for
replacement. Never install an ordinary wire Ð even for
a temporary fix. This may cause extensive damage and
possibly a fire.
ADDING WASHER FLUID
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.

BODY
582Fuel filler door: Do not apply water (high-pressure car wash,
for example) at or near the fuel tank inlet with the fuel filler door
opened. If the water enters the air vent, you may experience
trouble with refueling or rough engine idling.
Plastic wheel ornaments: The plastic wheel ornaments are
damaged easily by organic substances. If any organic
substance splashes an ornament, be sure to wash it off with
water and check if the ornament is damaged.
CAUTION
Do not attach the heavily damaged plastic wheel
ornament. It may fly off the wheel and cause accidents
while the vehicle is moving.
Aluminum wheels: Use only a mild soap or neutral detergent.
Urethane bumpers and side moldings: Wash 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 organic substances (gasoline, kerosene,
benzine or strong solvents), which may be toxic or
cause damage.