2020 Lexus GX460 ignition

556
GX460_OM_OM60R27U_(U)8-1. Specifications
Cooling 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 typeUse either of the following:
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-basednon-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system (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.

602What to do if... (Troubleshooting)
GX460_OM_OM60R27U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. ( P. 101)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 103)
●Is the electronic key battery weak or depleted? ( P. 484)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (P. 197)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 123)
●Is the child-protector lock set?
The rear door cannot be opened from in side the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( P. 107)
If you have a problem, check the foll owing before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

603What to do if... (Troubleshooting)
GX460_OM_OM60R27U_(U)
●Did you press the engine switch while firmly depressing the brake pedal?
( P. 196)
●Is the shift lever in P? ( P. 196)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 122)
●Is the steering wheel unlocked? ( P. 199)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 541)
●Is the battery discharged? ( P. 543)
●Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in IGNITION ON mode ( P. 205)
If you think something is wrong
The engine does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal

604What to do if... (Troubleshooting)
GX460_OM_OM60R27U_(U)
●It is locked automatically to prevent theft of the vehicle. ( P. 198)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 156)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( P. 198)
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts?
( P. 513)
●The parking brake indicator is on
Is the parking brake released? ( P. 208)
Depending on the situation, other types of warning buzzer may also sound.
( P. 511, 520)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 78)
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine. The steering wheel cannot be turned after the engine is stopped
The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and the horn sounds

609Alphabetical index
GX460_OM_OM60R27U_(U)
Emergency flashers .............................500
EngineAccessory mode..................................197
Brake Override System .................. 165
Compartment....................................... 451
Drive-Start Control............................ 166
Hood ....................................................... 450
How to start the engine ................... 196
Identification number ...................... 554
If the engine will not start............... 538
Ignition switch (engine switch)..... 196
Overheating ........................................ 546
Engine compartment cover ............. 452
Engine coolant....................................... 455 Capacity ................................................ 556
Checking............................................... 455
Preparing and checking before winter ....................................367
Engine immobilizer system ..................76
Engine oil ................................................. 453 Capacity ................................................ 554
Checking................................................453
Preparing and checking before winter ....................................367
Warning message ............................. 522
Engine oil maintenance data ........... 454
Engine switch ...........................................196
Engine switch light ............................... 392
Event data recorder (EDR) ...................10 Flat tire .......................................................524
Floor mats....................................................26
Fluid
Automatic transmission ................. 558
Brake........................................................559
Steering ................................................. 560
Washer ................................................... 463
Fog lights.................................................... 217 Replacing light bulbs ....................... 497
Switch ........................................................ 217
Four-wheel drive system................... 340
Front passenger occupant classification system ............................ 47
Front passenger’s seat belt reminder light ....................................... 513
Front seats ................................................. 128 Adjustment..............................................128
Cleaning................................................. 437
Correct driving posture .................... 28
Driving position memory...................141
Head restraints .....................................146
Seat heaters ..........................................390
Seat position memory .........................141
Front turn signal lights .........................207 Replacing light bulbs ....................... 493
Turn signal lever ................................. 207
Wattage ...................................................561F

610Alphabetical index
GX460_OM_OM60R27U_(U)
Fuel ............................................................. 554Capacity ................................................ 554
Fuel gauge ............................................... 88
Fuel pump shut off system.............. 510
Information ............................................562
Refueling................................................. 225
Type ............................................. 554, 562
Warning light ........................................ 513
Fuel consumption information ........... 98
Fuel filler door ........................................ 225 Refueling................................................. 225
Fuel gauge .................................................. 88
Fuel pump shut off system.................. 510
Fuses .......................................................... 486
Garage door opener .......................... 425
Gauges ........................................................ 88
Glass hatch ................................................ 116
Glove box ................................................ 396
Hands-free system (for cellular phone)
*
Head restraints ........................................146
Headlights ............................................... 209 Light switch .......................................... 209
Replacing light bulbs ........................ 497
Headlights cleaner............................... 224
Heaters Automatic air conditioning system ..................................... 376, 386
Seat heaters ......................................... 390
Outside rear view mirrors .............. 381
Height control........................................ 335
Hill-start assist control ........................ 352 Hood ......................................................... 450
Hooks
Cargo hooks ...........................402, 403
Coat hooks ........................................... 420
Retaining hooks (floor mat)............. 26
Horn............................................................. 149
I/M test ......................................................446
Identification Engine .....................................................554
Vehicle ....................................................553
Ignition switch (engine switch) ......... 196
Ignition switch light .............................. 392
Illuminated entry system ................... 394
Immobilizer system ................................. 76
Indicators .................................................... 82
Initialization Items to initialize ................................ 585
Maintenance data....................441, 454
Moon roof .............................................. 160
Power windows.................................... 157
Tire pressure warning system ..... 466
Inside rear view mirror.......................... 151
Instrument panel light control ............ 89
Interior lights .......................................... 392 Switch ...................................................... 393
Wattage ...................................................561
Jack Vehicle-equipped jack ................... 525
Jack handle ............................................. 528
Jam protection function Moon roof .............................................. 160
Power windows.................................... 157
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