2015 Lexus GX460 ignition

5157-2. Steps to take in an emergency
GX460_OM_OM60L72U_(U)
7
When trouble arises
■If the low speed four-wheel drive indicator light or the center differential lock indicator
light blinks
Take the specified steps. ( P. 3 3 8 )
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on du e to natural causes such as natural air leaks
or tire inflation pressure changes caused by temperature. In this case, adjusting the tire
inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The tire pressure warning light will turn on if the tire inflation pressure of the spare tire is
low. If a tire goes flat, the tire pressure warning light will not turn off even though the flat
tire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
 P. 4 7 2
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
engine switch is turned to IGNITION ON mo de, have it checked by your Lexus dealer.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
■Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features: P. 5 8 6 )

5537-2. Steps to take in an emergency
GX460_OM_OM60L72U_(U)
7
When trouble arises
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 switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once your vehicle’s engine has started, remove the jumper cables in the exact
reverse order in which they were connected.
Once the engine starts, have the vehicle checked at your Lexus dealer as soon
as possible.
■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.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle is not
in use, due to natural discharg e and the draining effects of certain electrical appliances. If
the vehicle is left for a long time, the battery may discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.)
■When recharging or replacing the battery
●Make sure that the key is not inside the vehicle when recharging or replacing the bat-
tery. The key may be locked in the vehicle if the alarm is activated. ( P. 7 1 )
●In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
●The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction.
●The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off. If you are unsure what
mode the engine switch was in before the battery discharged, be especially careful
when reconnecting the battery.
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566
GX460_OM_OM60L72U_(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.

614What to do if... (Troubleshooting)
GX460_OM_OM60L72U_(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. 9 1 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 9 3 )
●Is the electronic key battery weak or depleted? ( P. 4 8 3 )
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 1 8 6 )
●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. 1 1 3 )
●Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( P. 9 7 )
If you have a problem, check the following 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

615What to do if... (Troubleshooting)
GX460_OM_OM60L72U_(U)
●Did you press the engine switch while firmly depressing the brake pedal?
(P. 1 8 5 )
●Is the shift lever in P? ( P. 1 8 5 )
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 1 2 )
●Is the steering wheel unlocked? ( P. 188)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 5 5 0 )
●Is the battery discharged? ( P. 5 5 2 )
●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. 5 4 8 )
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

616What to do if... (Troubleshooting)
GX460_OM_OM60L72U_(U)
●It is locked automatically to prevent theft of the vehicle. ( P. 1 8 7 )
●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. 1 4 6 )
●The auto power off function will be oper ated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( P. 1 8 7 )
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts?
( P. 5 1 3 )
●The parking brake indicator is on
Is the parking brake released? ( P. 1 9 5 )
Depending on the situation, other type s of warning buzzer may also sound.
( P. 511, 519)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 7 0 )
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

621Alphabetical index
GX460_OM_OM60L72U_(U)
Emergency flashers ............................. 502
EngineAccessory mode................................. 186
Compartment..................................... 455
Hood ........................................................454
How to start the engine ................... 185
Identification number ...................... 564
If the engine will not start............... 546
Ignition switch (engine switch)..... 185
Overheating ........................................ 555
Engine compartment cover ............. 456
Engine coolant....................................... 459 Capacity ................................................ 566
Checking............................................... 459
Preparing and checking before winter ......................................371
Engine immobilizer system ................. 68
Engine oil ................................................. 457 Capacity ................................................ 564
Checking................................................457
Preparing and checking before winter ......................................371
Engine switch .......................................... 185
Engine switch light ............................... 396
Event data recorder (EDR) ...................10 Flat tire ...................................................... 533
Floor mats.................................................... 24
Fluid
Automatic transmission ................. 568
Brake........................................................569
Steering .................................................. 570
Washer ................................................... 467
Fog lights.................................................. 204 Switch ................................................. 204
Four-wheel drive system................... 336
Front passenger occupant classification system ............................46
Front passenger’s seat belt reminder light ....................................... 513
Front seats .................................................. 118 Adjustment............................................... 118
Cleaning................................................... 441
Correct driving posture .................... 26
Driving position memory...................131
Head restraints .....................................136
Seat heaters .......................................... 394
Seat position memory .........................131
Front turn signal lights .......................... 194 Replacing light bulbs ....................... 494
Turn signal lever ...................................194
Wattage ................................................... 571F

622Alphabetical index
GX460_OM_OM60L72U_(U)
Fuel ............................................................. 564Capacity ................................................ 564
Fuel gauge ................................................ 79
Fuel pump shut off system.............. 510
Information ............................................ 572
Refueling...................................................214
Type ............................................... 214, 564
Warning light ........................................ 513
Fuel consumption information ........... 88
Fuel filler door .......................................... 214 Refueling...................................................214
Fuel gauge ...................................................79
Fuel pump shut off system.................. 510
Fuses .......................................................... 485
Garage door opener ...........................427
Gauges .........................................................79
Glass hatch .............................................. 106
Glove box ................................................400
Hands-free system (for cellular phone)
*
Head restraints ........................................136
Headlights .................................................196 Light switch ............................................ 196
Replacing light bulbs ........................492
Wattage ................................................... 571
Headlights cleaner.................................213
Heaters Automatic air conditioning system .................................... 380, 390
Seat heaters ..........................................394
Outside rear view mirrors ............ 385 Height control ......................................... 331
Hill-start assist control ....................... 346
Hood ......................................................... 454
Hooks
Cargo hooks .......................... 406, 407
Coat hooks ............................................. 421
Retaining hooks (floor mat)..............24
Horn............................................................. 139
I/M test ..................................................... 450
Identification Engine ..................................................... 564
Vehicle ....................................................563
Ignition switch (engine switch) .........185
Ignition switch light .............................. 396
Illuminated entry system ................... 398
Immobilizer system ................................ 68
Indicators ..................................................... 74
Initialization Moon roof .............................................. 150
Power windows.................................... 147
Inside rear view mirror...........................141
Instrument panel light control ............ 80
Interior lights .......................................... 396 Switch ...................................................... 397
Wattage ................................................... 571
Jack Vehicle-equipped jack ................... 534
Jack handle ..............................................537
Jam protection function Moon roof .............................................. 150
Power windows.................................... 147
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