differential lock Lexus GX460 2021 Owner's Manual /

18Pictorial index
GX460_OM_OM60T19U_(U)
■Switches
Outside rear view mirror switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 157
Instrument cluster light control switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 91
VIEW switch
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 296
Odometer/trip meter and trip meter reset button . . . . . . . . . . . . . . . . . . . P. 91
Heated steering wheel switch
*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 397
Automatic High Beam switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 216
VSC OFF switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 357
Headlight cleaner switch
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 228
Second start mode switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 207
Center differential lock/u nlock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 345
Window lock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 160
Door lock switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 110
Power window switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 160
Driving position memory buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 145
1
2
3
4
5
6
7
8
9
10
11
12
13
14

GX460_OM_OM60T19U_(U)
852. Instrument cluster
2
Instrument cluster
Warning lights inform the driver of malfunctions in any of the vehicle’s systems.
Warning lights
*1
(U.S.A.)
Brake system warning light
( P. 518)
*1
(flashes or
illuminates)
PCS warning light
(  P. 519)
*1
(Canada)
Brake system warning light
( P. 518)*1Slip indicator light
( P. 519)
*1Charging system warning
light ( P. 518)*1Kinetic dynamic suspension
system warning light
( P. 519)
*2High coolant temperature
warning light ( P. 518)
(flashes)
Low speed four-wheel
drive indicator light
( P. 520)
*2Low engine oil pressure
warning light ( P. 518)
(flashes)
Center differential lock
indicator light ( P. 520)
*1
(U.S.A.)
Malfunction indicator lamp
( P. 518) Open door warning light
(
 P. 520)
*1
(Canada)
Malfunction indicator lamp
( P. 518) Low fuel level warning light
(
 P. 520)
*1SRS warning light
( P. 518) Seat belt reminder light
(
 P. 520)
*1
(U.S.A.)
ABS warning light
( P. 519)*1Tire pressure warning light
( P. 520)
*1
(Canada)
ABS warning light
( P. 519)*2
LDA indicator ( P. 521)

88
GX460_OM_OM60T19U_(U)2. Instrument cluster
Low speed four-wheel
drive indicator light
( P. 344)
*2TRAC OFF indicator
( P. 357)
Center differential lock
indicator ( P. 345)
*1
(if equipped)
MUD & SAND mode
indicator ( P. 289)
(if equipped)
Intuitive parking assist
indicator ( P. 270)*1
(if equipped)
MOGUL mode indicator
( P. 289)
*2, 4PCS warning light
( P. 242)*1
(if equipped)
ROCK mode indicator
( P. 289)
*1Smart access system with
push-button start indicator
( P. 200)*1
(if equipped)
LOOSE & ROCK mode
indicator ( P. 289)
(if equipped)
BSM indicator (P. 361)
*1
(if equipped)
ROCK & DIRT mode
indicator ( P. 289)
*5, 6
(if equipped)
BSM (Blind Spot Monitor)
outside rear view mirror
indicators ( P. 361)*1
(if equipped)
MTS AUTO indicator
( P. 289)
*1, 7Low outside temperature
indicator ( P. 90)
*2, 8
(U.S.A.)
“AIR BAG ON/
OFF” indicator
( P. 47)
*2, 8
(Canada)
“AIR BAG ON/
OFF” indicator
( P. 47)

170
GX460_OM_OM60T19U_(U)4-1. Before driving
■Restraining sudden start
(Drive-Start Control)
●When the following unusual operation is performed, the engine output may be
restrained.
• When the shift lever is shifted from R to D, D to R, N to R, P to D, or P to R (D
includes S) with the acce lerator pedal depressed, a warning message appears on
the multi-information display. If a warning message is shown on the multi-informa-
tion display, read the message and follo w the instructions.
• When the accelerator pedal is depressed t oo much while the vehicle is in reverse.
●While Drive-Start Control is being activated, your vehicle may have trouble escaping
from the mud or fresh snow. In such case, pe rform the following actions to cancel Drive
Start Control so that the vehicle may beco me able to escape from the mud or fresh
snow.
• Deactivate Active TRAC ( P. 357)
• Put the four-wheel drive control switch in L4. ( P. 344)
• Push the center differential lock/unlock switch to lock the center differential.
(  P. 345)
■Breaking in your new Lexus
To extend the life of the vehicle, observin g the following precautions is recommended:
●For the first 200 miles (300 km):
Avoid sudden stops.
●For the first 500 miles (800 km):
Do not tow a trailer.
●For the first 600 miles (1000 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in the low gears.
• Do not drive at a constant speed for extended periods.
■Drum-in-disc type parking brake system
Your vehicle has a drum-in-disc type parking brake system.
This type of brake system needs bedding-down of the brake shoes periodically or when-
ever the parking brake shoes and/or drum are replaced.
Have your Lexus dealer, perform the bedding-down operation.
■Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability of the cor-
rect fuel. ( P. 562)
■When turning off the engine
Emission system operating sounds may cont inue for a short time after the engine is
turned off. This is not a malfunction, and helps to ensure optimal performance of the
emission system.

GX460_OM_OM60T19U_(U)
2674-5. Using the driving support systems
4
Driving
■Dynamic radar cruise control can be set when
●The shift lever is in D.
●Vehicle speed is at or above approximately 30 mph (50 km/h).
■Accelerating after setting the vehicle speed
The vehicle can accelerate by operating the accelerator pedal. After accelerating, the
set speed resumes. However, during vehicle-to-vehicle distance control mode, the vehi-
cle speed may decrease below the set speed in order to maintain the distance to the pre-
ceding vehicle.
■Automatic cancelation of vehicle- to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the following situ-
ations:
●Actual vehicle speed falls at or below approximately 25 mph (40 km/h).
●VSC is activated.
●Active TRAC is activated for a period of time.
●When the VSC or Active TR AC system is turned off.
●When second start mode is set.
●The sensor cannot detect correctly because it is covered in some way.
●Pre-collision braking is activated.
●The switching operation continues for 5 seco nds or more after the center differential
lock switch has been operated.
If vehicle-to-vehicle distance control mode is automatically canceled for any other rea-
son, there may be a malfunction in th e system. Contact your Lexus dealer.
■Automatic cancelation of constant speed control mode
Constant speed control mode is automatica lly canceled in the following situations:
●Actual vehicle speed is more than approxim ately 10 mph (16 km/h) below the set vehi-
cle speed.
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●Active TRAC is activated for a period of time.
●When the VSC or Active TRAC system is turned off.
●Pre-collision braking is activated.
●The switching operation continues for 5 seco nds or more after the center differential
lock switch has been operated.
If constant speed control mode is automati cally canceled for any other reason, there may
be a malfunction in the system . Contact your Lexus dealer.
■Brake system operation sound
If the brakes are applied automatically while the vehicle is in vehicle-to-vehicle distance
control mode, a brake system operation sound may be heard. This does not indicate a
malfunction.

290
GX460_OM_OM60T19U_(U)4-5. Using the driving support systems
When all of the following conditions are
satisfied, the Multi-terrain Select indica-
tor will come on, the mode select screen will be displayed on the multi-informa-
tion display, and Multi-terr ain Select control will begin.
●The four-wheel drive control switch is in “L4”.
●Both Active TRAC and VSC are not off.
Operate the Multi-terrain Select mode
selector switch du ring Multi-terrain
Select control to select a mode.
Once the mode is confirmed, the mode
name will be displayed and the control
will switch.
■Automatic system cancelation
In the following situations, the Multi-terrain Select indicator will go off, and Multi-terrain
Select will be canceled automatically.
●When the four-wheel drive control switch is in H4.
●When Active TRAC and VSC are off.
■When it is difficult to generate traction
MUD & SAND mode provides the largest amou nt of tire slippage, followed by LOOSE
ROCK, MOGUL, ROCK & DIRT and ROCK mode.
Drivability can be improved by selecting a mo de which provides a smaller amount of tire
slippage than the current mode when the amount of tire slippage is large, or conversely
selecting a mode which provides a larger amou nt of tire slippage than the current mode
when the amount of tire slippage is small.
■When the vehicle is stuck
Switching the transfer and differential
For the operation of the following func tions, refer to the following pages.
●Four-wheel drive system (P. 344)
●Center differential lock ( P. 345)
■When the brake system operates continuously
The brake system may overheat. In this case, a buzzer will sound, the TRAC OFF indica-
tor will flash, and Multi-terrain Select will be temporarily inoperable. In this event, stop
the vehicle immediately in a safe place, and allow the brake system to cool down suffi-
ciently. (There is no problem wi th continuing normal driving.)
After a short time, the TRAC OFF indicator will go off, and you will be able to use Multi-
terrain Select.
Multi-terrain Select control starting conditions
Switching modes

344
GX460_OM_OM60T19U_(U)4-5. Using the driving support systems
Four-wheel drive system
H4 (high speed position)
Normal driving on all types of roads.
L4 (low speed position)
Driving requiring maximum power and
traction such as climbing or descending
steep hills, off-road driving, and hard
pulling in sand or mud, etc.
The low speed four-wheel drive indica-
tor will come on.
Use the four-wheel drive control switch
and center differential lock/unlock
switch to select the following transfer and center differential modes.
Four-wheel drive control switch
1
2

GX460_OM_OM60T19U_(U)
3454-5. Using the driving support systems
4
Driving
Lock the center differential when your
vehicle’s wheels get stuck in a ditch or
when driving on a slippery or bumpy
surface.
The center differential lock indicator will
come on.
Unlock the center differential after the
wheels have been freed, or after moving
to a flat, non-slippery surface.
To unlock the center differential, push the switch again.
■Shifting from H4 to L4Stop the vehicle completely with brake pedal held down.
Shift the shift lever to N.
Push and shift the four-wheel drive control switch to L4.
Maintain this condition until the low sp eed four-wheel drive indicator turns on.
■Shifting from L4 to H4
Stop the vehicle completely with brake pedal held down.
Shift the shift lever to N.
Push and shift the four-wheel drive control switch to H4.
Maintain this condition until the low sp eed four-wheel drive indicator turns off.
Center differential lock/unlock switch
Shifting between H4 and L4
1
2
3
1
2
3

346
GX460_OM_OM60T19U_(U)4-5. Using the driving support systems
■When the four-wheel drive control switch can be operated
●The engine switch is in IGNITION ON mode.
●The shift lever is in the N position.
●The vehicle is stopped completely.
■The low speed four-wheel drive indicator
●The indicator blinks while sw
itching between H4 and L4.
●If the low speed four-wheel drive indicator continues to blink when you operate the
four-wheel drive control switch to the H4 or L4 position, stop the vehicle completely,
shift the shift lever securely into N and then operate the switch again.
●If the shift lever is moved before the low speed four-wheel drive indicator turns on/off,
the transfer mode may not be shifted completely. The transfer mode disengages both
the front and rear drive shafts from the powertrain and allows the vehicle to move
regardless of the shift position. (At this time , the indicator blinks and the buzzer sounds.)
Therefore, the vehicle is free to roll even if the shift lever is in P. You or someone else
could be seriously injured. You must comple te the shifting of the transfer mode and
confirm that the indicator has turned off (H4) or turned on (L4).
●If the engine coolant temperature is too low, the four-wheel drive control system may
not be able to shift. When the engine is warmer operate the switch again.
If the indicator continue to blink even if doing so, have the vehicle inspected by your
Lexus dealer as soon as possible. There may be a trouble in the four-wheel drive system.
■When the transfer mode is switched to L4
VSC is automatically turned off. (T he VSC OFF indicator will come on.)
■When the center differential lock/unlock switch can be operated
The engine switch is in IGNITION ON mode.
■The center differential lock indicator
●The indicator blinks while locking/unlocking the center differential.
●If the center differential lock indicator b links and the buzzer sounds when the center
differential is locked, stop the slipping or spinning and push the switch again.
If the indicator continue to blink even if doing so, have the vehicle inspected by your
Lexus dealer as soon as possible. There may be a trouble in the four-wheel drive system.

GX460_OM_OM60T19U_(U)
3474-5. Using the driving support systems
4
Driving
■Locking/unlocking the center differential
●If the operation is not completed, the center di fferential lock indicator blinks. If the indi-
cator does not turn off when unlocking the center differential, drive straight ahead
while accelerating or decelera ting, or drive in reverse.
●Avoid turning suddenly while the center differ ential is locked. If you do turn suddenly,
the difference in turning speeds between the front and rear wheels may have a similar
effect to braking, thus making driving difficult.
WARNING
■While driving
Observe the following precautions. Failure to do so may cause an accident resulting in
death or serious injury.
●Never move the four-wheel drive control switch if the wheels have lost traction.
●Do not operate the center differential lock/unlock when the vehicle is turning or
when its wheels are spinning freely off the ground.
NOTICE
■To prevent damage to the center differential
●For normal driving on dry and hard surface roads, unlock the center differential.
●Unlock the center differential after the wheels are out of the ditch or off the slippery
or bumpy surface.