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

ENGINE
539
FUEL PUMP SHUT OFF SYSTEM
The fuel pump shut off system stops supplying fuel to the
engine to minimize the risk of fuel leakage when the engine
stalls or an airbag inflates upon collision. To restart the engine
after the fuel pump shut off system activates, turn the ignition
switch to ACCº or LOCKº once and start it.
CAUTION
Inspect the ground under the vehicle before restarting
the engine. If you find that liquid has leaked onto the
ground, it is the fuel system that has been damaged and
it is in need of repair. In this case, do not restart the
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.

ENGINE
543
If the oil level is below or only slightly above the low line,
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. We recommend that you use a funnel
when adding oil. The approximate quantity of oil needed to fill
between the low line and the full line 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.) 1.5 (1.6, 1.3)
NOTICE
Be careful not to spill the engine oil on the vehicle
components.
Avoid overfilling, or the engine could be damaged.
Check the oil level on the dipstick once again after
adding the oil.

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
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
576
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
584
13MIR
HEATER10Outside rear view mirror
defogger
14STOP10
Stop lights, high mounted
stoplight, shift lock control
system, vehicle stability control
system, electronic modulated
suspension, rear height control
air suspension, multiport fuel
injection system/sequential
multiport fuel injection system
15AC115V
INV15Power outlet (115 VAC)
16FR FOG15Front fog lights
17OBD7.5On- board diagnosis system
18HEAD
(LO RH)10Right-hand headlight (low beam)
19HEAD
(LO LH)10Left-hand headlight (low beam)
20HEAD
(HI RH)10Right-hand headlight (high
beam)
21HEAD
(HI LH)10Left-hand headlight (high beam)
22EFI NO.210Multiport fuel injection
system/sequential multiport fuel
injection system
23HEATER
NO.27.5Air conditioning system
24DEFOG30Rear window defogger
No.FUSEAMPERECIRCUIT

ELECTRICAL COMPONENTS
585
25AIRSUS
NO.210Rear height control air
suspension
26SEAT
HEATER20Seat heaters
27DOME10
Ignition switch light, interior
lights, personal lights, foot
lights, running board lights,
door courtesy lights, inside
door handle lights,
multi- information display
28RADIO
NO.120Car audio system, navigation
system
29ECU-B10
Multiplex communication
system, vehicle stability control
system, wireless remote
control system, inside rear
view mirror, air conditioning
system, electronic modulated
suspension, driving position
memory system, power
windows, moon roof, rear view
monitor system
30ECU-B
NO.210Theft deterrent system
31ABS
MTR40
Anti- lock brake system,
vehicle stability control system,
active traction control system,
brake assist system
32AM230Starting system, all components
in IGNº, SRSº, GAUGEº and
ST2º fuses
No.FUSEAMPERECIRCUIT

ELECTRICAL COMPONENTS
586
33ABS
SOL50
Anti- lock brake system,
vehicle stability control system,
active traction control system,
brake assist system
34ALT-S7.5Charging system
35MAYDAY7.5Lexus link system
36HORN10Horns
37TRN-HAZ15Turn signal lights
38ETCS10Electronic throttle control system
39EFI20Multiport fuel injection
system/sequential multiport fuel
injection system
40D FR P/W20Power window
41DR/LCK25Power door lock
42TOWING30Towing converter
43RADIO
NO.230Car audio system, navigation
system
44IGN10
Multiport fuel injection
system/sequential multiport fuel
injection system, vehicle
stability control system
45SRS10SRS airbag system
46GAUGE7.5Gauges and meters
47ST27.5Multiport fuel injection
system/sequential multiport fuel
injection system
No.FUSEAMPERECIRCUIT

ELECTRICAL COMPONENTS
587
48FR
WIP-WSH30Windshield wipers, windshield
washer
49TEMS20Electronic modulated
suspension
50DIFF20Four-wheel drive system
51RR WIP15Rear window wiper
52D P/SEAT30Driver's power seat
53P P/SEAT30Front passenger's power seat
54PWR
OUTLET15Power outlet (12 VDC)
55IG1 NO.210Rear air conditioning system,
inside rear view mirror, kinetic
dynamic suspension system
56RR WSH15Rear window washer
57ECU-IG10
Shift lock control system, power
windows, outside rear view
mirror defogger, anti-lock brake
system, active traction control
system, vehicle stability control
system, air conditioning system,
navigation system, power
windows, moon roof, Lexus link
system, tilt and telescopic
steering, multi- information
display, driving position
memory system, rear view
monitor system, tire pressure
warning system
No.FUSEAMPERECIRCUIT

ELECTRICAL COMPONENTS
588
58IG110
Air conditioning system, back-up
lights, rear window defogger,
seat heaters, vehicle stability
control system
59STA7.5Multiport fuel injection
system/sequential multiport fuel
injection system
60P FR P/W20Front passenger's power window
61P RR P/W20Rear right side power window
62D RR P/W20Rear left side power window
63PANEL10Instrument panel lights
64TAIL10Parking lights, tail lights, license
plate lights, front fog lights
65ACC7.5
Shift lock control system, power
outlets, outside rear view
mirrors, car audio system,
navigation system, power rear
view mirrors, multi- information
display, rear view monitor
system
66CIG10Cigarette lighter
67POWER
OR TI&TE30Power windows, moon roof, tilt
and telescopic steering