2012 Lexus GX460 heater

654
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60J00U)
50ECU-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
51WSH FR NO.27. 5 ADSS#1 ECU
52H-LP RH-LO15 AHeadlight low beam (right), headlight
leveling system
53H-LP LH-LO15 AHeadlight low beam (left), headlight
leveling system
54INJ10 ACoil, injector, ignition, noise filter
55EFI 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
56WIP FR NO.27. 5 ADSS#1 ECU
57WSH RR15 ARear window washer
58SPARESpare fuse
59SPARESpare fuse
60SPARESpare fuse
FuseAmpereCircuit

657
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60J00U)
19ECU-IG NO.210 A
Rear window defogger, outside rear
view mirror memory, seat heater/ven-
tilator switch, inverter relay, air condi-
tioning system, EC mirror, BODY
ECU, exhaust gas sensor, parking
assist sensor, navigation system,
DSS#2 ECU, meter switch, accessory
meter, folding seat ECU, O/H IG,
head light cleaner, rear air condition-
ing system, deicer, D-module, rain
sensor, air suspension, RR VLV ECU,
steering heater, LKA, P/SEAT IND
20S/HTR FR20 ASeat heater and ventilator
21P/ S E AT F R30 AFront power seat (right)
22DOOR P30 A
Front power window (passenger’s
side), outside rear view mirror mem-
ory
23DOOR10 APo w e r w i n d o w
24DOOR D25 AFront power window (driver’s side)
25DOOR RR25 ARear power window (right)
26S/ROOF25 AMoon roof
27WIP30 AWindshield wipers and washer
28WA S H E R20 AWindshield wipers and washer, rear
window wipers and washer
29COOLING10 ACool box
FuseAmpereCircuit

757
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60J00U)
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.

774
6-1. Specifications
GX460_U.S.A. (OM60J00U)
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

821
Alphabetical index
GX460_U.S.A. (OM60J00U)
Back doorBack door ................................................ 53
Wireless remote control.................... 47
Back-up lights
Replacing light bulbs ......................... 671
Wattage ................................................. 763
Battery Battery..................................................... 623
Checking ............................................... 623
If the vehicle has discharged
battery.................................................... 741
Preparing and checking
before winter.................................... 366
Bluetooth
®*...............................464, 485
Bottle holders/door pockets........... 529
Brake Fluid ............................................................ 619
Parking brake ........................................ 193
Brake assist ............................................. 335
Brake in tips .............................................. 169
Brightness control Multi-information display light
control ................................................... 215
Instrument cluster light control.....196
Care Exterior .................................................. 588
Interior..................................................... 593
Seat belts ............................................... 594
Cargo capacity ..................................... 359
Cargo hooks .......................................... 558
Cargo net hooks .................................. 559 CD player/changer
*.......................... 423
Center differential lock/unlock ...... 323
Chains ....................................................... 366
Child restraint system
Booster seats, definition .................. 146
Booster seats, installation ............... 154
Convertible seats, definition.......... 146
Convertible seats, installation ....... 154
Front passenger occupant classification system ....................... 139
Infant seats, definition ........................ 146
Infant seats, installation ..................... 154
Installing CRS with lower anchorages......................................... 152
Installing CRS with seatbelts ......... 154
Installing CRS with top straps....... 160
Child safety Airbag precautions .............................132
Battery precautions ..............623, 743
Child restraint system ....................... 146
Child-protectors .....................................51
How your child should wear
the seatbelt........................................... 88
Installing child restraints..................... 151
Moon roof precautions....................108
Power window lock switch .............. 101
Power window precautions .......... 103
Removed electronic key
battery precautions ...................... 646
Seat belt extender precautions...... 92
Seat belt precautions ..........................89
Seat heater precautions................. 553B
C
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

824
Alphabetical index
GX460_U.S.A. (OM60J00U)
Floor mats ................................................556
FluidBrake..........................................................619
Power steering...................................... 621
Washer ................................................... 627
Fog lights
Replacing light bulbs........................666
Switch ...................................................... 233
Wattage.................................................. 763
Footwell light............................................ 519
Four-wheel drive system ................... 322
Front passenger occupant
classification system .......................... 139
Front passenger’s seat belt
reminder light...................................... 692
Front seats
Adjustment............................................... 63
Driving position memory.................. 78
Front side marker light Replacing light bulbs........................ 667
Wattage.................................................. 763
Front turn signal lights
Replacing light bulbs....................... 668
Switch ........................................................ 192
Wattage.................................................. 763
Fuel
Capacity................................................. 754
Fuel gauge ............................................. 195
Fuel pump shut off system ............684
Gas station information..................836
Information............................................ 764
Refueling ................................................. 109 Fuel door ................................................... 109
Fuel filler door ......................................... 109
Fuel pump shut off system................. 684
Fuses .......................................................... 647
Garage door opener .......................... 567
Gas station information .....................836
Gauges ...................................................... 195
Glove box ................................................ 525
Glove box light ...................................... 525
Hands-free system for cellular
phones
*................................................485
Hazard lights
Switch ...................................................... 676
Head restraints
Adjustment ...............................................82
Headlights cleaner............................... 245
Headlights Adaptive front lighting
system...................................................223
Discharge headlights
precautions ........................................674
Replacing light bulbs ....................... 663
Switch ........................................................ 219
Wattage ..................................................763
Heaters Seat heaters ........................................... 551
Side mirror................................................ 411
Heated steering ................................. 549
Height control Rear height control air
suspension .......................................... 316
F
G
H

826
Alphabetical index
GX460_U.S.A. (OM60J00U)
LightsDoor courtesy lights.......................... 519
Emergency flasher switch ............. 676
Engine switch light ............................. 519
Fog light switch................................... 233
Hazard light switch ........................... 676
Headlights switch ................................ 219
Inside door handle light................... 519
Interior lights list................................... 519
Personal/interior lights .....................521
Replacing light bulbs........................ 662
Running board lights......................... 519
Scuff lights............................................... 519
Shift lever light ...................................... 519
Turn signal lever ................................... 192
Vanity lights ..........................................539
Wattage.................................................. 763
Load capacity .........................................364
Luggage cover...................................... 560
Maintenance Do-it-yourself ma intenance .........603
General maintenance .................... 598
Maintenance data.............................. 752
Maintenance requirements ..........596
Meter
Instrument cluster light control....................................................196
Meters ...................................................... 195
Micro dust and pollen filter................ 401
Mirrors Inside rear view mirror....................... 95
Side mirror heater .................................411
Side mirrors ............................................. 97
Vanity mirrors......................................539 Moon roof................................................. 104
MP3 disc....................................................431
Multi-information display
Brightness control .............................. 215
Multi-information display ........ 204, 212
Multi Terrain ABS ................................ 335
Multi-terrain Monitor ......................... 304
Multi-terrain Select.............................. 296
Navigation system
*
Noise from under vehicle .................... 20
Odometer ................................................ 195
Off-road precautions ......................... 353
Oil Engine oil................................................... 611
Opener Fuel filler door .......................................109
Hood .......................................................608
Outside rear view mirrors
Adjusting and folding .......................... 97
Driving position memory ..................78
Outside temperature display .......................................... 205, 212
Overhead console ............................... 533
Overheating, Engine .......................... 744
Parking assist sensors......................... 266
Parking brake...........................................193
Parking lights Replacing light bulbs ....................... 667
Switch ........................................................ 219
Wattage ..................................................763
PCS ............................................................ 343
M
N
O
P

827
Alphabetical index
GX460_U.S.A. (OM60J00U)
Personal lightsPersonal lights.......................................519
Switch ........................................................ 521
Wattage ................................................. 763
Power steering Fluid ............................................................ 621
Power outlet ................................ 542, 544
Power windows........................................ 101
Pre-Collision System.......................... 343
Radar cruise control ........................... 250
Radiator......................................................618
Radio ........................................................... 415
RDS (Radio Date System).................. 417
Rear height control air suspension ....................................... 316
Rear seat Adjustment ...............................................67
Folding down the second seatbacks ..................................... 69, 70
Folding down the third seats ........... 72
Rear side marker lights
Replacing light bulbs ....................... 669
Wattage ................................................. 763
Rear step bumper ....................................54
Rear turn signal lights Replacing light bulbs ....................... 669
Wattage ................................................. 763
Rear view mirror Compass ............................................... 575
Rear view monitor system ..................281
Rear window defogger
*.......................411
Rear window wiper and washer .....242 Replacing
Electronic key battery ......................644
Fuses......................................................... 647
Light bulbs .............................................662
Tires ............................................................ 721
Reporting safety defects for
U.S. owners ......................................... 804
Scuff lighting ............................................ 519
Seat belts Adjusting the seat belt ........................86
Automatic Locking Retractor......... 87
Child restraint system installation.............................................. 151
Cleaning and maintaining the seat belts .................................... 594
Emergency Locking Retractor ................................................ 87
How to wear your seat belt ............ 85
How your child should wear the seat belt ......................................... 88
Pre-collision seat belts ....................... 87
Pregnant women, proper seat belt use ........................ 88
Reminder light .....................................692
Seat belt extenders ..............................89
Seat belt pretensioners ......................90
Seat heaters ............................................. 551
Seat position memory ............................ 78
Seat ventilator ......................................... 551
Seating capacity .................................... 364
R
S
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.