steering Lexus GX470 2008 Repair Manual

362
4-3. Do-it-yourself maintenance
FuseAmpereCircuit
12IG1 NO.210
Rear air conditioning system, inside
rear view mirror, kinetic dynamic sus-
pension system
13RR WSH15Rear window washer
14ECU-IG10
Shift lock control system, power win-
dows, outside rear view mirror defog-
ger, anti-lock brake system, active
traction control system, vehicle stabil-
ity control system, air conditioning
system, navigation system, power
windows, moon roof, tilt and tele-
scopic steering, trip information dis-
play, driving position memory system,
rear view monitor system, tire pres-
sure warning system
15IG110
Air conditioning system, back-up
lights, rear window defogger, seat
heaters, vehicle stability control sys-
tem
16STA7. 5
Multiport fuel injection system/
sequential multiport fuel injection
system
17P FR P/W20Front passenger’s power window
18P RR P/W20Rear right side power window
19D RR P/W20Rear left side power window
20PA N E L10Instrument panel lights
21TA I L10Parking lights, tail lights, license plate
lights, front fog lights

363
4-3. Do-it-yourself maintenance
4
Maintenance and care
FuseAmpereCircuit
22ACC7. 5
Shift lock control system, power out-
let, outside rear view mirror, audio
system, navigation system, power
rear view mirrors, trip information
display, rear view monitor system
23CIG10Cigarette lighter
24POWER OR
TI&TE30Power windows, moon roof, tilt and
telescopic steering
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (→P. 3 6 5 )
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.

5
When trouble arises
373
5-1. Essential information
Towing eyelets
■Emergency towing procedureRelease the parking brake.
Put the shift lever in “N”.
The engine switch must be in the “ACC” position (engine off) or the “ON”
position (engine on).
CAUTION
■Caution while towing
●Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive stress on
the emergency towing eyelet and the cable or chain.
●If the engine is not running, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
●Put the vehicle height in the “N” (normal) mode and push the height control
“OFF” switch to turn off rear height control air suspension. Otherwise the auto-
matic leveling function may adjust the vehicle height unexpectedly, resulting in an
accident.
NOTICE
■To prevent causing serious damage to the transmission
Never tow this vehicle from the rear with four wheels on the ground.
STEP1
STEP2
STEP3

5
When trouble arises
375
5-1. Essential information
From rearUse a towing dolly under the front
wheels.
NOTICE
■To prevent damaging the vehicle
●Do not tow the vehicle with the engine switch in the “LOCK” position.
The steering lock mechanism is not strong enough to hold the front wheel
straight.
●When raising the vehicle, ensure adequate ground clearance for towing at the
opposite end of the raised vehicle. Without adequate clearance, the vehicle
could be damaged while being towed.

5
When trouble arises
379
5-1. Essential information
Event data recorder
In a crash or a near car crash eventThe EDR may record some or all of the following information.
● Engine speed
● Whether the brake pedal was applied or not
● Ve h i c l e s p e e d
● To what extent the accelerator pedal was depressed
● Position of the transmission shift lever
● Whether the driver and front passenger wore seat belts or not
● Driver’s seat position
● Front passenger’s occupant classification
● SRS airbag deployment data
● SRS airbag system diagnostic data
Your Lexus’ Electronic Control Unit (ECU) may contain another EDR.
There are a variety of driving situations which include activating the vehi-
cle stability control (VSC) under which the VSC EDR will record certain
information. The VSC EDR may record some or all of the following infor-
mation:
● Behavior of the vehicle
● Steering wheel angle
Your vehicle has computers that monitor and control certain aspects of
your vehicle. These computers assist in driving and maintaining optimal
vehicle performance.
Besides storing data useful for troubleshooting, there is a system to record
data in a crash or a near car crash event. This is called an Event Data
Recorder (EDR).

388
5-2. Steps to take in an emergency
The tire pressure warning system may become inoperative in the following condi-
tions:
(When the condition becomes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies are nearby.
●If a radio set at similar frequencies is in use in the vehicle.
●If a window tint that affects the radio wave signals is installed.
●If there is a lot of snow or ice on the vehicle, in particular around the wheels or
wheel housings.
●If non-genuine Lexus wheels are used. (Even if you use genuine Lexus wheels,
the tire pressure warning system may not work properly with some types of
tires.)
●If tire chains are used.
●If the spare tire is in a location subject to poor radio wave signal reception.
● If a large metallic object which can interfere with signal reception is put in the
luggage compartment.
■If the tire pressure warning light comes on after blinking for 1 minute frequently
If the tire pressure warning light comes on after blinking for 1 minute frequently
when the engine switch is turned to the “ON” position, have it checked by your
Lexus dealer.
■After changing the engine oil (U.S.A. only)
Make sure to reset the oil maintenance data. (→P. 3 2 6 )
CAUTION
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If the tire is flat,
change to the spare tire and have the flat tire repaired by the nearest Lexus
dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.

419
6-1. Specifications
6
Vehicle specifications
Chassis lubrication
Steering
Tires and wheels
Propeller shafts
Spiders
Slide yokeLithium base chassis grease, NLGI No.2
Molybdenum-disulfide lithium base chassis
grease, NLGI No.2 or
lithium base chassis grease, NLGI No.2
Free playLess than 1.2 in. (30 mm)
Power steering fluidAutomatic transmission fluid DEXRON® II
or III
Ti r e s i z eP265/65R17 110S
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Driving under normal conditions 32 psi (220 kPa, 2.2
kgf/cm2 or bar)
Driving at high speeds above 100 mph (160
km/h) (in countries where such speeds are per-
mitted by law) Add 9 psi (60 kPa, 0.6 kgf/cm
2 or bar) to the
front tires and rear tires. Never exceed the
maximum cold tire inflation pressure indicated
on the tire sidewall.
Wheel size17 × 7 1 /2 JJ
Wheel nut torque83 ft•lbf (112 N•m, 11.5 kgf•m)

429
6-1. Specifications
6
Vehicle specifications
Warning: The temperature grades for this tire are 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.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning and
additional weight optional engine
Maximum loaded
vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight

446
Alphabetical index
Alphabetical index
A/C ............................................................. 192
ABS.............................................................. 159
Active traction control......................... 159
Air conditioning systemAir conditioning filter ....................... 349
Automatic air conditioning system .................................................... 192
Airbags
Airbag operating conditions...........80
Airbag precautions for your child.......................................................... 85
Airbag warning light ........................ 382
Curtain shield airbag precautions .......................................... 87
General airbag precautions ........... 84
Locations of airbags............................. 77
Modification and disposal of airbags ....................................................88
Side airbag precautions .................... 86
Side and curtain shield airbags operating conditions .......................80
SRS airbags .............................................. 77
Alarm ............................................................ 72
Antenna ........................................208, 303
Armrest..................................................... 276
Ashtrays .................................................... 269
Audio system Antenna ..................................................208
CD player/changer .............................211
DVD information ............................... 240
DVD player ............................................ 231
DVD video/audio ............................. 236
MP3/WMA disc .................................218
Optimal use.......................................... 224
Radio ........................................................ 203
Rear sear entertainment
system .................................................... 231 Steering switches .............................. 228
Video CD ..............................................243
Automatic light control system........ 135
Automatic transmission ........................ 121
Back door .....................................................31
Back-up lights Wattage ................................................. 420
Battery Battery .................................................... 333
Checking............................................... 333
If the vehicle battery is
discharged ........................................ 405
Preparing and checking
before winter...................................... 176
Brake
Fluid .......................................................... 330
Parking brake........................................ 125
Brake Assist ............................................. 159
Care Exterior ................................................... 306
Interior.....................................................308
Seat belts ............................................... 309
Cargo capacity....................................... 168
Cargo hooks .......................................... 278
CD player ................................................... 211
Center differentia l lock ........................ 147
Chains ......................................................... 177
Child-protectors...................................... 28
Child restraint system
Definition .................................................. 95
Installation ................................................ 98
Installing CRS with lower anchorages ......................................... 102
Installing CRS with seatbelts ...........99A
B
C

448
Alphabetical index
If the vehicle battery is discharged .......................................405
If you have a flat tire ...........................391
If you lose your keys......................... 404
If you think something is wrong ....................................................377
If your vehicle becomes stuck...... 410
If your vehicle needs to be towed ................................................... 372
If your vehicle overheats ............... 408
Engine Compartment ....................................... 321
Engine switch.......................................... 118
Hood........................................................ 320
How to start the engine..................... 118
If the engine will not
start ........................................................ 402
Overheating........................................ 408
Engine compartment cover ............. 322
Engine coolant temperature gauge....................................................... 126
Engine coolant
Capacity...................................................416
Checking ............................................... 328
Preparing and checking before winter ...................................... 176
Engine immobilizer system.................. 70
Engine oil Capacity...................................................415
Checking ............................................... 323
Preparing and checking before winter ...................................... 176
Engine oil maintenance data............ 326
Event data recorder ............................ 379 First-aid kit storage belt ..................... 279
Flat key ......................................................... 22
Floor mats .................................................277
Fluid
Brake ....................................................... 330
Power steering ..................................... 331
Washer................................................... 335
Fog lights
Switch ........................................................ 137
Wattage ................................................. 420
Foot light .................................................. 256
Front passenger’s seat belt reminder light .....................................385
Front passenger occupant
classification system............................ 90
Front seats
Adjustment ............................................... 34
Driving position memory ..................45
Front turn signal lights Wattage ................................................. 420
Fuel Capacity .................................................. 414
Fuel gauge .............................................. 126
Gas station information ................. 456
Information ............................................. 421
Refueling .................................................... 67
Fuel door ......................................................67
Fuel filler door ............................................67
Fuses .......................................................... 355F