stop start Lexus GX460 2021 / Service Manual

5287-2. Steps to take in an emergency
GX460_OM_OM60T19U_(U)
■Warning messages
The warning messages explained below may differ from the actual messages according
to operation conditions an d vehicle specifications.
■Warning buzzer
In some cases, the buzzer ma y not be heard due to being in a noisy location or audio
sound.
■If “ENGINE OIL LOW”/“Engine Oil Level Low Add or Replace” is shown
The engine oil level is low. Check the level of the engine oil, and add if necessary.
This message may appear if the vehicle is stopped on a slope. Move the vehicle to a level
surface and check to see if the message disappears.
■If “AUTO POWER OFF TO CONSERVE BATTE RY”/“Auto power off to conserve bat-
tery” is shown
Power was turned off due to the automatic power off function. Next time when starting
the engine, increase the engine speed slightly and maintain that level for approximately 5
minutes to recharge the battery.
■If “ENGINE OIL PRES SURE LOW”/“Oil Pressure Low Stop in a Safe Place See
Owner’s Manual” is shown
Indicates abnormal engine oil pressure.
Immediately stop the vehicle in a safe place and contact your Lexus dealer. Continuing to
drive the vehicle may be dangerous.
■If “HIGH TRANSMISSION FLUID TEMPERAT URE”/“High Transmission Fluid Temp
See Owner’s Manual” is shown.
It indicates that the automatic transmission fluid temperature is too high.
Immediately stop the vehicle in a safe place, shift the shift lever to P and wait until the
warning message disappear. If the warning message disappears, you may start the vehi-
cle again. If the warning message does not disappear, contact your Lexus dealer.
■If “Check Transmissi on System” is shown.
The automatic transmission system is malfunctioning.
Have the vehicle inspected by your Lexus dealer.
■If “ACCELERATOR AND BRAKE PEDA LS DEPRESSED SIMULTANEOUSLY”/
“Accelerator and Brake Pedals Pressed Simultaneously” is shown on the multi-informa-
tion display
The accelerator and brake pedal are being depressed simultaneously. ( P. 169)
Release the accelerator pedal and depress the brake pedal.
■If “HEADLIGHT SYSTEM MALFUNCTION VISIT YOUR DEALER”/“Headlight Sys-
tem Malfunction Visit Your Dealer” is displayed
The following systems may be malfunctioning. Have the vehicle inspected by your Lexus
dealer immediately.
●The LED headlight system
●The automatic headlight leveling system
●Automatic High Beam

5337-2. Steps to take in an emergency
GX460_OM_OM60T19U_(U)
7
When trouble arises
WARNING
■Using the tire jack
Improper use of the tire jack may cause the ve hicle to suddenly fall off the jack, leading
to death or serious injury.
●Do not use the tire jack for any purpose ot her than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do no t use other tire jacks for replacing tires on
this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under the vehicle while it is supported by the jack.
●Do not start or run the engine while your vehicle is supported by the jack.
●Do not raise the vehicle while someone is inside.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greater than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
●Vehicles with rear height control air suspensi on: Be sure to turn off the height control
and stop the engine.
Take particular care when lowering the ve hicle to ensure that no one working on or
near the vehicle will be injured.
■Using the jack handle
Tighten all the jack handle bo lts securely using a Phillips-head screwdriver, to prevent
the extension parts from co ming apart unexpectedly.

5487-2. Steps to take in an emergency
GX460_OM_OM60T19U_(U)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the engine switch.
When the electronic key is detected, a
buzzer sounds and the engine switch
will turn to IGNITION ON mode.
When the smart access system with
push-button start is deactivated in cus-
tomization setting, the engine switch will
turn to ACCESSORY mode.
Firmly depress the brake pedal and check that is shown on the multi-
information display.
Press the engine switch shortly and firmly.
In the event that the engine still cannot be started, contact your Lexus dealer.
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stopping
the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( P. 492)
■Changing engine switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the engine
switch.
The engine does not start and modes will be changed each time the switch is pressed.
(  P. 201)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the customization setting. If it is off, turn the function on.
(Customizable features:  P. 584)
●Check if battery-saving mode is set. If it is set, cancel the function. (P. 127)
Starting the engine
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5547-2. Steps to take in an emergency
GX460_OM_OM60T19U_(U)
The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir.Reservoir
“F”
“L”
Radiator cap
Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
Start the engine and turn the air conditio ning system on to check that the radi-
ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are operating by checking the fan sound and air flow.
If it is difficult to check these, turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
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556
GX460_OM_OM60T19U_(U)7-2. Steps to take in an emergency
If the vehicle becomes stuck
Stop the engine. Set the parking br
ake and shift the shift lever to P.
Remove the mud, snow or sand from around the stuck tire.
Place wood, stones or some other mate rial under the tires to help provide
traction.
Restart the engine.
Lock the center differential. ( P. 345)
Shift the shift lever to the D or R positi on and release the parking brake. Then,
while exercising caution, depress the accelerator pedal.
■When it is difficult to free the vehicle
Turn off TRAC/Active TRAC/VSC/Trailer Sway Control if these functions are hamper-
ing your attempts to free the vehicle. ( P. 357)
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt, or snow:
Press to turn off TRAC/Active TRAC/VSC/
Trailer Sway Control.
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612What to do if... (Troubleshooting)
GX460_OM_OM60T19U_(U)
●It is locked automatically to prevent theft of the vehicle. ( P. 202)
●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. 160)
●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. 202)
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts?
( P. 520)
●The parking brake indicator is on
Is the parking brake released? ( P. 212)
Depending on the situation, other types of warning buzzer may also sound.
( P. 518, 527)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 79)
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

622Alphabetical index
GX460_OM_OM60T19U_(U)
Seat heaters ............................................ 398
Seat ventilators ...................................... 399
Seat position memory...........................145
Seats...................................................132, 134Adjustment ................................... 132, 134
Adjustment precautions ........ 133, 144
Child seats/child restraint system installation............................. 58
Cleaning .................................................445
Driving position memory ................ 145
Head restraint ....................................... 150
Properly sitting in the seat ................ 28
Seat position memory....................... 145
Ventilators ............................................ 399
Sensor Automatic headlight system ...........214
Automatic High Beam system ..... 216
Inside rear view mirror ..................... 156
Intuitive parking assist-sensor .....270
LDA (Lane Departure Alert) ...... 250
Radar sensor ........................................ 234
Rain-sensing windshield wipers ................................................... 224
Service reminder indicators ............... 84
Shift lever Automatic transmission ................. 206
If the shift lever cannot be shifted from P .................................. 209
Shift lock system....................................208
Side airbags ............................................... 36
Side mirrors .............................................. 157 Adjusting and folding........................ 157
Blind Spot Monitor............................. 361 Side turn signal lights ..............................211
Replacing light bulbs ...................... 505
Turn signal lever .....................................211
Smart access system with push-button start................................. 125 Antenna location.................................. 125
Starting the engine ............................200
Snow tires .................................................376
Spare tire ................................................... 531 Inflation pressure............................... 568
Storage location ................................. 532
Spark plug ............................................... 564
Specifications......................................... 560
Speedometer ............................................ 90
Steering lock Column lock release ....................... 203
Steering wheel ........................................ 153 Adjustment..............................................153
Audio switches
*
Heated steering wheel ................... 397
Steering wheel position memory.................................................145
Stop/tail lights Replacing light bulbs ...................... 505
Storage feature ..................................... 403
Stuck If the vehicle becomes stuck........556
Sunshade Roof ............................................................164
Sun visors................................................... 419
Switch Automatic High Beam switch ....... 216
AVS switch ........................................... 343
BSM (Blind Spot Monitor) switch ................................................... 362
Center differential lock/ unlock switch.................................... 345