change wheel Lexus GX460 2020 / LEXUS 2020 GX460 (OM60R27U) User Guide

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GX460_OM_OM60R27U_(U)6-3. Do-it-yourself maintenance
■When registering ID codes
●ID code registration is performed while driving at a vehicle speed of approximately 25
mph (40 km/h) or more.
●Before performing ID code registration, make
sure that no wheels with tire pressure
warning valve and transmitters installed are near the vehicle.
●Initialize the tire pressure warning system after ID code registration. Initialization is dis-
abled if the system was init ialized before registration.
●After ID code registration, the tires are hot by driving. Initialize the tire pressure warn-
ing system after the tires become cold.
●ID codes can be registered by yourself, bu t depending on the driving conditions and
driving environment, registration may take some time to complete.
■Canceling the change wheel set mode
●If turning the engine switch off when in th e change wheel set mode before driving, the
change wheel set mode is canceled.
●After driving when in the ch ange wheel set mode, the change wheel set mode cannot
be canceled. To cancel the mode, perform th e procedure for ID code registration again
and turn the engine switch off before driving.
●If the change wheel set mode is canceled, the ID codes that have already been regis-
tered are communicated. When communication is finished, the tire pressure warning
light will turn off.
■When ID code registration has failed
●Registration may take long time or the ID codes may not be registered in the following
situations.
• When the vehicle is moved ba ckward during registration.
Registration is started again from the beginning and it may take longer than usual.
• When another vehicle is running the side of the vehicle such as in heavy traffic. It may take longer to detect the vehicle’s tire pressure warning valves and transmit-
ters.
• If tire pressure warning valves an d transmitters are in the vehicle.
The ID codes may not be registered.
●When performing registration , drive on a paved road if possible. Depending on the
driving environment and conditio n of the tires, registration will be completed in approx-
imately 10 to 30 minutes.
• If registration is not comple te after driving approximately 30 minutes, continue driv-
ing for a while.
• If registration is not complete after driving approximately 1 hour, park the vehicle in a safe place for approximately 20 minutes. Then drive straight (with occasional left
and right turns) at approximat ely 25 mph (40 km/h) or more
* for approximately 10
to 30 minutes.
If registration is still not complete, have the vehicle inspected by your Lexus dealer.
*: Except when making a left/right turn
●When the tire pressure warning light does not blink slowly 3 times, the ID code will not
be registered and the system will not operate properly. Perform registration again.

5067-2. Steps to take in an emergency
GX460_OM_OM60R27U_(U)
Securely attach an elastic towing
rope to the towing hooks.
Take care not to damage the vehicle
body.
Enter the vehicle being towed and start the engine.
If the engine does not start, turn the engine switch to IGNITION ON mode.
Set the four-wheel drive control switch in H4 and push the center differential
lock/unlock switch to unlock the center differential. (P. 340)
For models with the rear height cont rol air suspension: Change the vehicle
height to N (normal) mode and end th e vehicle height control operation.
( P. 335)
Shift the shift lever to N and release the parking brake.
When the shift lever cannot be shifted: P. 205
■While towing
If the engine is not running, the power assist for the brakes and steering will not function,
making steering and br aking more difficult.
Emergency towing procedure
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5167-2. Steps to take in an emergency
GX460_OM_OM60R27U_(U)
■If the low speed four-wheel drive indicator light or the center differential lock indicator
light blinks
Take the specified steps. ( P. 342)
■When the tire pressure warning light comes on
Inspect the tires to check if a tire is punctured.
If a tire is punctured:  P. 524
If none of the tires are punctured:
Turn the engine switch off then turn it to IGNITION ON mode. Check if the tire pressure
warning light comes on or flashes.
If the tire pressure warning light comes on
After the temperature of the tires has lowere d sufficiently, check the inflation pressure
of each tire and adjust th em to the specified level.
If the warning light does not turn off even after several minutes have elapsed, check
that the inflation pressure of each tire is at the specified level and perform initialization.
(  P. 466)
If the warning light does not turn off even after several minutes have elapsed, have the
vehicle inspected by your Lexus dealer immediately.
If the tire pressure wa rning light flashes for 1 minute then stay on
There may be a malfunction in the tire pressure warning system. Have the vehicle
inspected by your Lexus dealer immediately.
■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 wi ll turn on if the tire inflation pressure of the spare tire is
low. If a tire goes flat, the tire pressure warn ing light will not turn off even though the flat
tire has been replaced with the spare tire.
■Conditions that the tire pressure wa rning system may not function properly
 P. 470
■If the tire pressure warning light freque ntly 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. 576)
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5177-2. Steps to take in an emergency
GX460_OM_OM60R27U_(U)
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When trouble arises
WARNING
■If both the ABS and the brake sy stem warning lights remain on
Stop your vehicle in a safe place immediat ely and contact your Lexus dealer. The vehi-
cle will become extremely unstable during br aking, and the ABS system may fail, which
could cause an accident resultin g in death or serious injury.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of vehi-
cle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If the tire is flat, change to
the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.