Engine mode Lexus GX460 2021 / Repair Manual

GX460_OM_OM60T19U_(U)
3514-5. Using the driving support systems
4
Driving
■When the Crawl Control system is operated continuously
This may cause the brake actuator to overheat . In this case, the Crawl Control system will
stop operating, a buzzer will sound, the Crawl Control indicator will turn off after flashing
and the “TRAC OFF” indicator will come on. In this case, quickly stop the vehicle in a safe
place and give the actuator adequate time to cool off. Refrain from using the system until
the “TRAC OFF” indicator turns off. (The ve hicle can be driven normally during this
time.)
■When depressing the accelerator pedal while the Crawl Control is operating
Multi-terrain Select operates in AUTO mode. ( P. 288)
■If the automatic transmission system overheats
The system will cease operation, a buzzer w ill sound and a warning message will be dis-
played to alert the driver. Stop the vehicle in a safe place until the warning message turns
off. ( P. 528)
■Sounds and vibrations caused by the Crawl Control system
●A sound may be heard from the engine compartment when the engine is started or just
after the vehicle begins to move. This soun d does not indicate that a malfunction has
occurred in Crawl Control system.
●Either of the following conditions may occu r when the Crawl Control system is operat-
ing. None of these are indicators that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard afte r the vehicle comes to a stop.
■If the slip indicator comes on...
It may indicate a malfunction in the system. Cons ult your Lexus dealer.
WARNING
■When using Crawl Control
Do not rely solely on the Crawl Control. This function does not extend the vehicle’s
performance limitations. Always thoroughly check the road conditions, and drive
safely.
■These conditions may cause the system not to operate properly
When driving on the following surfaces, the sy stem may not be able to maintain a fixed
low speed, which may re sult in an accident:
●Extremely steep inclines.
●Extremely uneven surfaces.
●Snow-covered roads, or other slippery surfaces.

GX460_OM_OM60T19U_(U)
3534-5. Using the driving support systems
4
Driving
■Operating tips
The system will operate when the shift lever is in a position other than P, however to make
effective use of the system it is recommended to select a lower shift range.
■The system will not operate when
The transfer mode is in H4.
■If the downhill assist control system indicator flashes
●In the following situations, the indicator flashes and the system will not operate:
• The transfer mode is not in L4.
• The shift lever is in P.
• The accelerator or brake pedal is depressed.
• The vehicle speed exceeds approximately 15 mph (25 km/h).
• The brake system overheats.
●In the following situations, the indicator flas hes to alert the driver, but the system will
operate:
• The shift lever is in N.
• The “DAC” switch is turned of f while the system is operating.
The system will gradually ceas es operation. The indicator will flash during operation,
and then go off when the system is fully off.
■When the downhill assist control system is operated continuously
This may cause the brake actuator to overheat. In this case, the downhill assist control
system will stop operating, a buzzer will sound and the downhill assist control system
indicator will start flashing, and the “TRAC OFF” indicator light will come on. Refrain
from using the system until the downhill assi st control system indicator stays on and
“TRAC OFF” indicator light turns off. (The vehicle can be driven normally during this
time.)
■Sounds and vibrations caused by the downhill assist control system
●A sound may be heard from the engine compartment when the engine is started or just
after the vehicle begins to move. This soun d does not indicate that a malfunction has
occurred in downhill assist control system.
●Either of the following conditions may occur when the do wnhill assist control system is
operating. None of these are indicators that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard afte r the vehicle comes to a stop.
■System malfunction
In the following cases, have your vehicle checked by your Lexus dealer.
●The downhill assist control system indicator does not come on when the engine switch
is turned to IGNITION ON mode.
●The downhill assist control system indicator does not come on when the “DAC” switch
is shifted to ON.
●The slip indicator comes on.

GX460_OM_OM60T19U_(U)
3895-1. Using the air conditioning system and defogger
5
Interior features
■Defogging the rear window and outside rear view mirrors
Defoggers are used to defog the rear window, and to remove raindrops, dew
and frost from the outside rear view mirrors.
Press .
The defoggers will automatically turn off after a period of time.
■Micro dust and pollen filter mode
Pollen is removed from the air and the air flows to the upper part of the body.
Touch on the option control screen.
When the micro dust and pollen filter mo de is on, is displayed on the air
conditioning control screen.
In order to prevent the windshield from fo gging up when the outside air is cold, the
dehumidification function may operate.
The pollens are filtered out even if the mi cro dust and pollen filter mode is turned
off.
■Windshield wiper de-icer (if equipped)
This feature is used to prevent ice fr om building up on the windshield and
wiper blades.
Touch on the option control screen.
When the windshield wiper de-icer is on , is displayed on the air condition-
ing control screen.
The windshield wiper de-icer will automati cally turn off after a period of time.
■The windshield wiper de-icer can be operat ed when (vehicles with windshield wiper
de-icer)
The engine switch is in IGNITION ON mode.
■When the windshield wiper de-icer is on (vehicles with windshield wiper de-icer)
The windshield wiper de-icer will automatically turn off after approximately 15 minutes.
WARNING
■When the windshield wiper de-icer is on (vehicles with windshield wiper de-icer)
Do not touch the glass at the lower part of th e windshield or the side of the front pillars
as the surfaces can become very hot and burn you.

GX460_OM_OM60T19U_(U)
3915-1. Using the air conditioning system and defogger
5
Interior features
■Registering air conditioning settings to electronic keys
●Unlocking the vehicle using an electronic key and turning the engine switch to
IGNITION ON mode will recall that key’s registered air conditioning settings.
●When the engine switch is turned off, the current air conditioning settings will automat-
ically be registered to the electronic key that was used to unlock the vehicle.
The system may not operate correctly if more than one electronic key is in the vicinity or
if the smart access system with push-button start is used to unlock a passenger door.
Settings for the electronic key and th e corresponding door can be changed.
Contact your Lexus dealer.
■Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the ambi-
ent conditions.
Therefore, the fan may stop for a while until wa rm or cool air is ready to flow immediately
after the “AUTO” button is pressed.
■When the outside temperature exceeds 75 F (24 C) and the air conditioning system
is on
●In order to reduce the air co nditioning power consumption, the air conditioning system
may switch to recirculated air mode automatically.
This may also reduce fuel consumption.
●Recirculated air mode is selected as a defaul t mode when the engine switch is turned to
IGNITION ON mode.
●It is possible to switch to outside air mode at any time by pressing or
.
■Fogging up of the windows
●The windows will easily fog up when the humidi ty in the vehicle is high. Touching “A/C”
on will dehumidify the air from the outl ets and defog the windshield effectively.
●If you turn “A/C” off, the windows may fog up more easily.
●The windows may fog up if the recirculated air mode is used.
■When driving on dusty roads
Close all windows. If dust thrown up by the ve hicle is still drawn into the vehicle after clos-
ing the windows, it is recommended that the air intake mode be set to outside air mode
and the fan speed to any setting except off.
■Outside/recirculated air mode
●Setting to the recirculated air mode temporarily is recommended in preventing dirty air
from entering the vehicle interior and helping to cool the vehicle when the outside air
temperature is high.
●Outside/recirculated air mode may automa tically switch depending on the tempera-
ture setting or the inside temperature.

GX460_OM_OM60T19U_(U)
3935-1. Using the air conditioning system and defogger
5
Interior features
■Customization
Settings (e.g. A/C automatic mode sw itch operation) can be changed.
(Customizable features: P. 584)
WARNING
■To prevent the windshield from fogging up
●Do not use during cool air operation in extremely humid weather. The differ-
ence between the temperature of the outside air and that of the windshield can cause
the outer surface of the windshield to fog up, blocking your vision.
■To prevent burns
●Do not touch the rear view mirror surfaces when the outside rear view mirror defog-
gers are on.
●Do not touch the glass at lower part of the windshield or to the side of the front pillars
when the windshield wiper de-icer is on. (vehicles with windshield wiper de-icer)
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the engine is
off.
■When repairing/replacing parts of the air conditioning system
Have repair/replacement performed by your Lexus dealer. When a part of the air con-
ditioning system, such as the evaporator, is to be replaced, it must be replaced with a
new one.
●Do not place anything on the instrument
panel which may cover th e air outlets. Other-
wise, air flow may be obstructed, preventing
the windshield defoggers from defogging.

3965-1. Using the air conditioning system and defogger
GX460_OM_OM60T19U_(U)
■Registering air conditioning settings to electronic keys
●Unlocking the vehicle using an electronic key and turning the engine switch to
IGNITION ON mode will recall that key’s registered air conditioning settings.
●When the engine switch is turned off, the current air conditioning settings will automat-
ically be registered to the electronic key that was used to unlock the vehicle.
The system may not operate correctly if more than one electronic key is in the vicinity or
if the smart access system with push-button start is used to unlock a passenger door.
Settings for the electronic key and th e corresponding door can be changed.
Contact your Lexus dealer.
NOTICE
■To prevent battery discharge
Do not leave the air conditioni ng system on longer than necessary when the engine is
off.

3985-1. Using the air conditioning system and defogger
GX460_OM_OM60T19U_(U)
●The heated steering wheel can be used when the engine switch is in IGNITION ON
mode.
●The heated steering wheel will automati cally turn off after about 30 minutes.
●If the indicator light flashes, press the switch to turn the heated steering wheel off and
then press the switch again. If the indica tor light still flashes, a malfunction may be
occurring. Turn the heated steering wheel off and have the vehicle inspected by your
Lexus dealer.
■Front seat
Turns the seat heater on
The indicator light comes on.
The higher the number of dots, the
warmer the seat becomes.
■Rear seat (if equipped)
For left second seat
For right second seat
High heating temperature
Low heating temperature
To turn on the seat heater, press “HI”
or “LO”.
The indicator light on “HI” or “LO”
switch indicates that the seat heater
is on.
Off
To turn off, press “OFF”.
The seat heaters can be used when the engine switch is in IGNITION ON mode.
Seat heaters (if equipped)
1
2
3
4
5

GX460_OM_OM60T19U_(U)
3995-1. Using the air conditioning system and defogger
5
Interior features
Heats the seat
The indicator light comes on.
The higher the number of dots, the
warmer the airflow becomes.
Blows air from the seat
The indicator light comes on.
The higher the number of dots, the
stronger the airflow becomes.
The seat heaters and ventilators can be used when the engine switch is in IGNITION
ON mode.
Seat heaters and ventilators (if equipped)
1
2

402
GX460_OM_OM60T19U_(U)5-2. Using the interior lights
■Illuminated entry system
The lights automatically turn on/off according
to engine switch mode, the presence of the
electronic key, whether the doors are locked/unlocked, and whether the doors are
open/closed.
■To prevent battery discharge
If the following lights remain on when the engine switch is turned off the lights will go off
automatically after 20 minutes:
●Personal/interior light
●Inside door handle lights
●Footwell lights
●Running board lights
■Customization
Settings (e.g. adjust the time elapsed before th e interior lights automatically turn off) can
be changed. (Customizable features:  P. 584)
NOTICE
To prevent battery discharge, do not leave th e lights on longer than necessary when the
engine is not running.

417
GX460_OM_OM60T19U_(U)5-4. Using the other interior features
5
Interior features
Other interior features
Lift the lid while pulling up the lower
lever to release the lock.
Turns the cool box on/off
When on, the indicator light comes on.
■The cool box can be operated when
The engine switch is in IGNITION ON mode.
■If the front air conditioning system is not in use when the cool box is turned on
The front air conditioning system is automatically turned on.
Cool box (if equipped)
1
2