ignition Lexus GX460 2010 Operating Other Driving Systems / LEXUS 2010 GX460 (OM60E69U) Workshop Manual

650
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60E69U)
23HTR50 AAir conditioning system
24WIP WSH RR30 ARear window wipers and washer
25H-LP CLN30 AHeadlight cleaner
26400W INV80 AAC INVERTER
27ST30 ASteering lock system
28H-LP HI25 ADIM relay, headlights, daytime run-
ning light system
29ALT-S7. 5 AALT
30TURN & HAZ15 A
Front turn signal light, rear turn signal
light, side turn signal light, meter turn
signal light
31D/L NO.125 ADoor lock motor, glass hatch opener
32ETCS10 AEFI ECU
33FUEL PMP15 AFPC
34TOW I N G30 ATo w i n g
35ALT140 A
Air conditioning system, AIR SUS,
headlight cleaner, towing, folding seat,
STOP, rear window defogger, MIR
HTR, CDS FAN, RR FOG, DEICER,
ALT CON, MG-CLT, RR SEAT HTR,
STRG HTR, J/B
36P/ I - B80 AInjector, ignition, meter, EFI, A/F
heater, horn
FuseAmpereCircuit

652
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60E69U)
51ECU-B10 A
Body ECU, meter, heater, steering
sensor, wireless remote control, seat
position memory, tilt and telescopic
steering, multi display, Smart access
system with push button start, folding
seat, cool box, DSS#2 ECU, steering
switch, D-module switch, overhead
module
52WSH FR NO.27. 5 ADSS#1 ECU
53H-LP RH-LO15 AHeadlight low beam (right), headlight
leveling system
54H-LP LH-LO15 AHeadlight low beam (left), headlight
leveling system
55INJ10 ACoil, injector, ignition, noise filter
56EFI NO.210 A
O2 SSR, AFM, ACIS VSV, AI
COMB, KEY OFF PUMP, EYP VSV,
EGR VALVE, CANISTER VSV, AI
VSV RLY, AI PUMP HTR RLY
57WIP FR NO.27. 5 ADSS#1 ECU
58WSH RR15 ARear window washer
59SPARESpare fuse
60SPARESpare fuse
61SPARESpare fuse
FuseAmpereCircuit

5
When trouble arises
679
5-1. Essential information
GX460_U.S.A. (OM60E69U)
■Before emergency towingThe “ENGINE START STOP” switch must be in the ACCESSORY mode
(engine off) or IGNITION ON mode (engine running).
Put the four-wheel drive control switch in H4. (The center differential is
unlocked.)
Put the vehicle height in the N mode and press height control switch to
turn off the rear height control air suspension.
Shift the shift lever in N.
Release the parking brake.
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 eyelets and the cables or chains. Always use caution for
the surroundings and other vehicles while towing.
●Do not turn the “ENGINE START STOP” switch off. 
Doing so will lock the steering wheel and prevent operation, possibly causing an
accident and result ing in death or serious injury.
●If the engine is not running, the power assi st for the brakes and steering will not
function, making steering and braking more difficult.
STEP1
STEP2
STEP3
STEP4
STEP5

5
When trouble arises
691
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
*1: Open door warning buzzer:
The open door warning buzzer sounds to alert one or more of the doors is not
fully closed (with the vehicle having reached a speed of 3 mph [5 km/h]). 
( P. 7 0 3 )
*2: Driver’s and front passenger’s seat belt reminder buzzer:
The driver’s and front passenger’s seat belts reminder buzzer sounds to alert
the driver and front passenger that his/he r seat belt is not fastened. Once the
“ENGINE START STOP” switch is turned to IGNITION ON mode, the buzzer
sounds for 4 to 8 seconds. If the vehicl e reaches a speed of 12 mph (20 km/h),
the buzzer sounds intermittently for 10 se conds. Then, if the seat belt is still
unfastened, the buzzer w ill sound in a different tone for 20 more seconds.
Warning lightWarning light/DetailsCorrection procedure
Master warning light
A buzzer sounds and the
warning light comes on and
flashes to indicate that the
master warning system has
detected a malfunction.
 P. 6 9 8
Tire pressure warning light
When the light comes on:
Low tire inflation pressure.Adjust the tire inflation pres-
sure.
When the light comes on after
blinking for 1 minute:
Malfunction in the tire pres-
sure warning system.
Have the system checked by
your Lexus dealer.

742
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60E69U)
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Open and close any of the doors of your vehicle with the
“ENGINE START STOP” switch off.
Maintain the engine sp eed of the second vehicle and start the
engine of your vehicle by tu rning the “ENGINE START STOP”
switch to IGNITION ON mode.
Once your vehicle’s engine has started, remove the jumper
cables in the exact reverse ord er in which they were con-
nected.
Once the engine starts, have the ve hicle checked at your Lexus dealer
as soon as possible.STEP3
STEP4
STEP5
STEP6

755
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60E69U)
Cooling system
Ignition system
Capacity 
(reference)
With rear
heater16.3 qt. (15.4 L, 13.6 Imp.qt.)
Without rear
heater14.5 qt. (13.7 L, 12.1 Imp.qt.)
Coolant type
Use either of the following:• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology
Do not use plain water alone.
Spark plug
MakeDENSO SK20HR11
Gap0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

813
Alphabetical index
GX460_U.S.A. (OM60E69U)
EngineAccessory mode ................................. 179
Compartment .................................... 608
Engine switch ........................................ 179
Hood ....................................................... 607
How to start the engine.................... 179
Identification number......................... 751
If the engine will not start ................734
Ignition switch........................................ 179
Overheating..........................................744
Engine compartment cover............. 609
Engine coolant Capacity................................................. 755
Checking .................................................615
Preparing and checking 
before winter ...................................... 361
Engine coolant temperature 
gauge ....................................................... 195
Engine immobilizer system ..................114
Engine oil Capacity................................................. 753
Checking .................................................610
Preparing and checking 
before winter ...................................... 361
Engine oil maintenance data ............. 612
Engine switch ........................................... 179
Engine switch light .................................. 511
Event data recorder............................ 683
Floor mats................................................ 556
Fluid Brake .........................................................618
Power steering ................................... 620
Washer ................................................... 626 Fog lights
Replacing light bulbs ....................... 664
Switch....................................................... 233
Wattage ....................................................761
Footwell light .............................................511
Four-wheel drive system .....................317
Front passenger occupant 
classification system .......................... 140
Front passenger’s seat belt 
reminder light......................................690
Front seats Adjustment ............................................... 64
Driving position memory .................. 79
Front side marker light Replacing light bulbs ....................... 665
Wattage ....................................................761
Front turn signal lights Replacing light bulbs ....................... 666
Switch.........................................................192
Wattage ....................................................761
Fuel Capacity ................................................. 752
Fuel gauge.............................................. 195
Fuel pump shut off system............ 682
Gas station information ..................824
Information ............................................ 762
Refueling.................................................. 109
Fuel door ................................................... 109
Fuel filler door ......................................... 109
Fuel pump shut off system .................682
Fuses .......................................................... 645
F

814
Alphabetical index
GX460_U.S.A. (OM60E69U)
Garage door opener .......................... 567
Gas station information......................824
Gauges ...................................................... 195
Glove box ................................................. 516
Glove box light ....................................... 516
Hands-free system for cellular 
phones.................................................... 477
Hazard lights Switch ...................................................... 674
Head restraints Adjustment............................................... 83
Headlights cleaner ................................ 241
Headlights Adaptive front lighting 
system .................................................. 223
Discharge headlights 
precautions ....................................... 672
Replacing light bulbs..........................661
Switch ...................................................... 220
Wattage.................................................... 761
Heaters Seat heaters ........................................... 551
Side mirror ............................................404
Heated steering..................................549
Height control Rear height control air 
suspension.......................................... 310
Hill-start assist control ......................... 331
Hood .......................................................... 607
Hooks Cargo ...................................................... 557
Cargo hooks .......................................559
Coat ........................................................ 555
Horn ............................................................ 194 I/M test ...................................................... 601
Identification
Engine ....................................................... 751
Vehicle...................................................... 751
Ignition switch .......................................... 179
Ignition switch light Ignition switch light ...............................511
Illuminated entry system ......................514
Indicator lights ........................................ 198
Initialization Items to initialize...................................801
Inside door handle light ........................ 511
Inside rear view mirror .......................... 96
Instrument cluster light control.........196
Interior lights Interior lights ............................................ 511
Switch ........................................................ 513
Wattage ................................................... 761
Intuitive parking assist......................... 259
Jack Vehicle-equipped jack....................720
Jack handle ............................................. 720
Keyless entry ................................................. 48
Keys Electronic key ......................................... 26
Engine switch .......................................... 29
If you lose your keys ......................... 737
If the electronic key does not 
operate properly............................ 738
Key number plate.................................. 26
Keyless entry........................................... 48
Keys.............................................................. 26
Mechanical key ...................................... 26
Wireless remote control key.......... 48G
H
I
J
K

818
Alphabetical index
GX460_U.S.A. (OM60E69U)
Fog light switch ................................... 233
Hazard light Switch .......................... 674
Heated steering wheel switch.....549
Height control off switch................. 310
Ignition switch........................................ 179
Light switches ...................................... 220
Power door lock switch ...................... 51
Power window switch ........................ 101
“RSCA OFF” switch.......................... 138
Rear window defogger switch ................................................... 404
Transmission shift switch................. 189
Window lock switch ........................... 101
Wipers and washer switch ........... 235
Tachometer .............................................. 195
Tail lights Replacing light bulbs........................ 670
Switch ...................................................... 220
Talk switch
*............................................482
Telephones switch
*.............................482
Theft deterrent system Alarm .......................................................... 116
Engine immobilizer system ..............114
Tire inflation pressure ......................... 634
Tire information Glossary..................................................772
Size ........................................................... 768
Tire identification number ............. 767
Uniform Tire Quality Grading.... 770
Tires Chains .......................................................361
Checking ............................................... 627
If you have a flat tire .......................... 720
Inflation pressure................................ 760
Information............................................ 765 Pressure warning system ............... 627
Replacing ...............................................720
Rotating tires......................................... 627
Size ........................................................... 760
Snow tires................................................ 361
Spare tire ................................................720
Tire pressure warning

system................................................... 627
Tools........................................................... 720
Total load capacity ............................... 359
Towing Dinghy towing ....................................380
Emergency towing ........................... 675
Trailer towing ...................................... 365
TRAC ..........................................................331
Traction control.......................................331
Trailer towing ......................................... 365
Transmission shift switches................ 189
Trip information display ....................... 212
Trip meter ................................................. 195
Turn signal lights Replacing light bulbs ........... 666, 667
Switch ........................................................ 192
Wattage ................................................... 761
Vanity lights Vanity lights.......................................... 532
Wattage ................................................... 761
Vanity mirrors ........................................... 532
Vehicle identification number...........751
Vehicle load limits ................................ 359
Ventilators ................................................ 551
VSC (Vehicle Stability Control) ....330
T
V