2020 Lexus GX460 warning light

5157-2. Steps to take in an emergency
GX460_OM_OM60R27U_(U)
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When trouble arises
*1: This light illuminates on the multi-information display.
*2: Open door warning buzzer: The open door warning buzzer sounds to al ert hood or one or more of the doors or
glass hatch are not fully closed (with the vehicle having reached a speed of 3 mph [5
km/h]).
*3: Driver’s seat belt warning buzzer:
The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt
is not fastened. Once the engine switch is turned to ON, the buzzer sounds. If the seat
belt is still unfastened, the buzzer sounds intermittently for a certain period of time
after the vehicle reaches a certain speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front passenger
that his or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds
intermittently for a certain period of time after the vehicle reaches a certain speed.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors, side
and curtain shield airbag sensors, rear side and curtain shield airbag sensors, floor sen-
sor, driver’s seat belt buc kle switch, front passenger occupant classification system (ECU
and sensors), “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front pas-
senger’s seat belt buckle sw itch, seat belt pretensioner assemblies, airbags, intercon-
necting wiring and power sources. ( P. 36)
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sittin g in the seat.
●If a cushion is placed on the seat, the sens or may not detect a passenger, and the warn-
ing light may not operate properly.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fu el tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible.

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
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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.

5187-2. Steps to take in an emergency
GX460_OM_OM60R27U_(U)
WARNING
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold and
inflated to the inflation pressure recomm ended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure label (tire and load information label). (If your
vehicle has tires of a different size than the size indicated on the vehicle placard or tire
inflation pressure label [tire and load in formation label], you should determine the
proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle ha s been equipped with a tire pressure moni-
toring system (TPMS-tire pressure warning system) that illuminates a low tire pressure
telltale (tire pressure warning light) when on e or more of your tires is significantly
under-inflated. Accordingly, when the low ti re pressure telltale (tire pressure warning
light) illuminates, you should stop and check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a si gnificantly under-inflated tire causes the
tire to overheat and can lead to tire failure . Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure wa rning system) is not a substitute for proper
tire maintenance, and it is th e driver’s responsibility to ma intain correct tire pressure,
even if under-inflation has not reached the le vel to trigger illumination of the TPMS low
tire pressure telltale (tir e pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system) mal-
function indicator to indicate when the system is not operating properly. The TPMS
(tire pressure warning system) malfunction indi cator is combined with the low tire pres-
sure telltale (tire pressure warning light). When the system detects a malfunction, the
telltale will flash for approximately one mi nute and then remain continuously illumi-
nated. This sequence will cont inue upon subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction in dicator is illuminated, the system may not
be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfun ctions may occur for a variety of reasons,
including the installation of replacement or alternate tires or wheels on the vehicle that
prevent the TPMS (tire pressure warning system) from functioning properly. Always
check the TPMS (tire pressure warning system) malfunction telltale after replacing one
or more tires or wheels on your vehicle to ensure that the replacement or alternate
tires and wheels allow the TPMS (tire pressu re warning system) to continue to function
properly.

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GX460_OM_OM60R27U_(U)7-2. Steps to take in an emergency
If a warning message is displayed
Multi-information display
Handling method
Follow the instructions of the mes-
sage on the multi-information dis-
play.
If any of the warning lights comes on ag ain after the following actions have been
performed, contact your Lexus dealer.
The warning lights and warning buzzers operate as follows depending on the
content of the message. If a message indicates the need for inspection by a
dealer, have the vehicle inspected by your Lexus dealer immediately.
*: A buzzer sounds the first time a message is shown on the multi-information display.
The multi-information display shows warn ings of system malfunctions, incor-
rectly performed operations, and messag es that indicate a need for mainte-
nance. When a message is shown, perform the correction procedure
appropriate to the message.
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Messages and warnings
Warning lightWarning buzzer
*Warning
Sounds
• Indicates an important situation, such as when a sys- tem related to driving is malfunctioning or that dan-
ger may result if the correction procedure is not
performed
• Indicates a situation, such as when damage to the
vehicle or danger may result
Comes on or flashesSounds
Indicates an important situat ion, such as when the sys-
tems shown on the multi-information display may be
malfunctioning
Does not sound
• Indicates a condition, such as malfunction of electri-
cal components, their condition, or indicates the
need for maintenance
• Indicates a situation, such as when an operation has
been performed incorrectly, or indicates how to per-
form an operation correctly

5217-2. Steps to take in an emergency
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When trouble arises
■Warning messages
The warning messages explained below may di ffer 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. 165)
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

5457-2. Steps to take in an emergency
GX460_OM_OM60R27U_(U)
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When trouble arises
WARNING
■Avoiding battery fires or explosions
Observe the following precautions to preven t accidentally igniting the flammable gas
that may be emitted from the battery:
●Make sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any other than the intended terminal.
●Do not allow the + and - clamps of the jump er cables to come into contact with each
other.
●Do not smoke, use matches, cigarette lighters or allow open flame near the battery.
■Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while related parts
contain lead and lead compounds. Observ e the following precautions when handling
the battery:
●When working with the battery, always wear safety glasses and take care not to allow
any battery fluids (acid) to come into cont act with skin, clothing or the vehicle body.
●Do not lean over the battery.
●In the event that battery fluid comes into contact with the skin or eyes, immediately
wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be
received.
●Always wash your hands afte r handling the battery support, terminals, and other bat-
tery-related parts.
●Do not allow childre n near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entangled in the
cooling fans or belt.

GX460_OM_OM60R27U_(U)
5778-2. Customization
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Vehicle specifications
Some function settings are changed simultaneously with other functions being
customized. Contact your Lexus dealer for further details.
Settings that can be changed us ing the multi-information display
Settings that can be changed using the multimedia system or navigation sys-
tem
Settings that can be changed by your Lexus dealer
Definition of symbols: O = Available, – =Not available
■Multi-information display ( P. 91)
*1: The customized setting varies according to country.
*2: The default setting varies according to countries.
*3: Some status screens cannot be registered (indicated on the multi-information display)
■LDA (Lane Departure Alert) ( P. 246)
Customizable features
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FunctionDefault settingCustomized
setting
LanguageEnglishFrench*1
O—OSpanish
Units*2miles (MPG US)km (km/L)O—Okm (L/100km)
Eco Driving Indicator LightOnOffO—O
switch settingsDrive information 1Desired status screen
*3O——
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FunctionDefault
settingCustomized setting
Adjust alert type(Steering
vibration)(Buzzer)O——
Alert sensitivityStandardHighO——
Vehicle sway warning func-
tionOnOffO——
Vehicle sway warning sensi-
tivityStandardLowO——High
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