wheel LEXUS LX570 2019 Repair Manual

312
LX570_OM_OM60R07U_(U) 4-5. Using the driving support systems
WARNING ■
While driving
Never move the four-wheel drive control switch if the wheels have lost traction. Doing
so may cause an accident result ing in death or serious injury.■
When the vehicle is parked
If the shift lever is moved be fore 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 driveshafts from the po wertrain 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 automatic transmission is in P. You or
someone else could be seriously injured. You must complete the shifting of the transfer
mode.
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. ●
Do not push the center differential lock/u nlock switch when the vehicle is turning or
when its wheels are spinning freely off the ground.

314
LX570_OM_OM60R07U_(U) 4-5. Using the driving support systems
The following table shows some typical
terrains and the recommended speed
modes.
This function assists cornering perfor mance in accordance with steering opera-
tion when driving through a tight corner. It maintains vehicle speed while driving
and reduces the number of turns needed to navigate a corner that requires turn-
ing the wheel in the opposite direction.
Press the Turn Assist switch while
Crawl Control is operating. Turn Assist indicator will come on.
To turn the system off, press the switch
again.Speed modes
Mode Road condition
Lo Rock, mogul (downhill) and gravel (down-
hill)
Lo-Med
Mogul (uphill)
Med
Snow, mud, gravel (uphill), sand, dirt,
mogul (uphill) and grassMed-Hi
Hi
Turn Assist function 1
2
3
4
5

LX570_OM_OM60R07U_(U) 3154-5. Using the driving support systems
4
Driving 
Crawl Control
Press the ON/OFF switch while Crawl Cont rol is operating. If the switch is
turned off, the slip indicator and the Turn Assist indicator will go off (if the Turn
Assist function is in use), the Crawl Co ntrol indicator will flash until the system
has turned off completely, and a messag e stating that Crawl Control has been
turned off will be displayed on the multi- information display fo r several seconds.
When turning off Crawl Control while driv ing, stop the vehicle before the Crawl
Control indicator turns off, or drive extremely carefully.
Turn Assist function
Press the Turn Assist switch while the Turn Assist function is operating. When the
switch is pressed, the Turn Assist indicat or will go off, and a message stating that
the Turn Assist function ha s been turned off will be di splayed on the multi-infor-
mation display for several seconds. ■
The Crawl Control and Turn Assist function can be operated when
Crawl Control ●
The engine is running. ●
The shift lever is in any gear other than P or N.●
The four-wheel drive control switch is in L4. ●
The driver’s door is closed. 
Turn Assist function ●
Crawl Control is operating. ●
The center differential is not locked. ●
The accelerator and brake are not being operated. ●
The shift lever is in any ge ar other than P, R or N.●
The steering wheel is turned very far.When the system is turned off

316
LX570_OM_OM60R07U_(U) 4-5. Using the driving support systems■
Automatic system cancelation 
Crawl Control
In the following situations, the buzzer will sound intermittently an d Crawl Control will be
canceled automatically. In this event, the Crawl Control indicator will flash and then go
off, the Turn Assist indicator will go off (if th e Turn Assist function is in use), and a message
stating that Crawl Cont rol has been turned off will be di splayed on the multi-information
display for several seconds. ●
When the shift lever is moved to P or N. ●
When the four-wheel drive control switch is in H4. ●
When the driver’s door is opened. 
Turn Assist function
When the center differential is locked, the buzzer will sound inte rmittently and the Turn
Assist function will be canceled automatically. In this event, the Turn Assist indicator will
go off, and a message stating that the Turn Assi st function has been turned off will be dis-
played on the multi-informatio n display for several seconds.■
Function limitations 
Crawl Control ●
In the following situations, brake control can be used to drive downhill at a constant
speed. However, engine control is not available when drivin g uphill at a co nstant speed.
•When switched to second start mode.●
In the following situation, engine control an d brake control will stop temporarily. In this
event, the Crawl Control indicator will flash.
• When the vehicle speed exceeds approximately 15 mph (25 km/h). 
Turn Assist function
In the following situations, the Turn Assist func tion will stop temporarily. In this event, the
Turn Assist indicator will flash. ●
When the vehicle speed exceeds approximately 6 mph (10 km/h). ●
When the shift lever is moved to R. ■
When the Crawl Control system is operated continuously●
If Crawl Control is used continuously for a long time, the buzzer will sound, a malfunc-
tion notification will be displayed on the multi-information display, the Crawl Control
indicator will go off, and Crawl Control will be temporarily inoperable as a result of the
brake system overheating. In this event, stop the vehicle immediately in a safe place,
and allow the brake system to cool down sufficiently until the TRAC OFF indicator
goes off. (In the meantime, normal driving is possible.) ●
If Crawl Control is used continuously for a long time, the buzzer will sound, the system
will be temporarily canceled, and a malfunct ion notification will be displayed on the
multi-information display as a result of th e automatic transmission system overheating.
Stop the vehicle in a safe place until the display goes off. ■
When depressing the accelerator pedal while the Crawl Control is operating
Multi-terrain Select operates in AUTO mode. (  P. 319)

LX570_OM_OM60R07U_(U) 3194-5. Using the driving support systems
4
Driving When the Crawl Contro l is turned off, a
mode which matches the road condi-
tions can be selected from among the
following 5 modes.
MUD & SAND
LOOSE ROCK
MOGUL
ROCK & DIRT
ROCK
When the Crawl Control is turned on, th e most suitable mode is automatically
selected according to the Cr awl Control mode selected.
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.Selectable modes 1
2
3
4
5
Mode Road Conditions
MUD & SAND Suitable for muddy roads, sandy roads, snow-covered roads, dirt
trails and other slippery or dirty conditions
LOOSE ROCK Suitable for slippery conditions consisting of mixtures of earth
and loose rock
MOGUL Suitable for a wide range of off- road conditions, particularly very
bumpy conditions
ROCK & DIRT Suitable for very bumpy road cond itions, such as mogul or rocky
roads.
ROCK Suitable for rocky terrain
Multi-terrain Select control starting conditions

320
LX570_OM_OM60R07U_(U) 4-5. Using the driving support systems
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 th e following pages.●
Four-wheel drive system (  P. 309)●
Center differential lock (  P. 310)■
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. ■
When there is a malfunction in the system
The slip indicator light will come on. Have the vehicle in spected by your Lexus dealer
immediately.Switching modes

LX570_OM_OM60R07U_(U) 3234-5. Using the driving support systems
4
Driving ■
Screens when the four-wheel drive control switch is in L4 ●
When checking the area to the front and sides of the vehicle
●
When checking the condition of th e road surface under the vehicle
Front view & dual side view 
Front view & dual side view (front
magnified)
 P. 331  P. 331
Under vehicle terrain view & dual
side view 
Under vehicle terrain view & dual
side view (front magnified)
 P. 335  P. 335

324
LX570_OM_OM60R07U_(U) 4-5. Using the driving support systems●
When checking the area to the rear of the vehicle
■
Screens when the four-wheel drive control switch is in H4 ●
When checking the area to the front of the vehicle (panoramic view & wide
front view)
 P. 339
●
When checking the area to the sides of the vehicle (side views)
 P. 341 
Rear view & dual side view 
Wide rear view
 P. 337  P. 337

328
LX570_OM_OM60R07U_(U) 4-5. Using the driving support systems
The screen display can be switched by operating the switches as follows while
the Multi-terrain Monitor screen is displa yed. (Screens that can be displayed will
vary depending on the positions of the shift lever and four-wheel drive control
switch) ■
Screens when the four-wheel drive control switch is in L4
: Press
: Select
: Select
: Operate the shift leverChanging the Multi-terrain Monitor screen

330
LX570_OM_OM60R07U_(U) 4-5. Using the driving support systems■
Screens when the four-wheel drive control switch is in H4
: Press
: Select
: Operate the shift lever
* 1
: The displayed screen differs when the outside rear view mirrors are retracted.
* 2
: The screen display can be switched by touching the image from the camera on the
screen. * 1
* 2
* 1
Navigation screen, information set-
tings screen, etc.
Side views:  P. 341
Panoramic view & wide front view:
 P. 339 Panoramic view & rear view:
 P. 344
Wide rear view:  P. 3441
2
3 4
5