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LX570_OM_OM60R61U_(U)
3134-5. Using the driving support systems
4
Driving
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 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 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/unlock switch when the vehicle is turning or
when its wheels are spinning freely off the ground.
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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
Crawl Control (with Turn Assist function)
ON/OFF switch
Speed selection switch
Indicators
The Crawl Control indicator is lit and
the slip indicator flashes when operat-
ing.
Multi-information display
The operating status and speed select
status of the Crawl Control are shown
on the multi-information display.
Allows travel on extremely rough off-ro
ad surfaces at a fixed low speed with-
out pressing the accelerator or brake pedal. Minimizes loss of traction or
vehicle slip when driving on slippery ro ad surfaces, allowing for stable driving.
Crawl Control switches
1
2
3
4
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LX570_OM_OM60R61U_(U)
3154-5. Using the driving support systems
4
Driving
The following table shows some typical
terrains and the recommended speed
modes.
This function assists cornering performance 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
ModeRoad condition
LoRock, mogul (downhill) and gravel (down-
hill)
Lo-MedMogul (uphill)Med
Snow, mud, gravel (uphill), sand, dirt,
mogul (uphill) and grassMed-Hi
Hi
Turn Assist function
1
2
3
4
5
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LX570_OM_OM60R61U_(U)
3174-5. Using the driving support systems
4
Driving
■Automatic system cancelation
Crawl Control
In the following situations, the buzzer will sound intermittently and 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 intermittently 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 driving uphill at a constant 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. 320)
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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
■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.
■When there is a malfunction in the system
Warning lights and/or warning messages will turn on. ( P. 525, 533)
WARNING
■When using Crawl Control and Turn Assist function
Do not rely solely on the Crawl Control and Turn Assist function. This function does not
extend the vehicle’s performance limitations . Always thoroughly check the road condi-
tions, 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.
NOTICE
■When using Turn Assist function
The Turn Assist function is a function to assist turning performance when driving off
road. The function may be less ef fective on paved road surfaces.
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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
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
ModeRoad Conditions
MUD & SANDSuitable for muddy roads, sandy roads, snow-covered roads, dirt
trails and other slippery or dirty conditions
LOOSE ROCKSuitable for slippery conditions consisting of mixtures of earth
and loose rock
MOGULSuitable for a wide range of off- road conditions, particularly very
bumpy conditions
ROCK & DIRTSuitable for very bumpy road cond itions, such as mogul or rocky
roads.
ROCKSuitable for rocky terrain
Multi-terrain Select control starting conditions
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LX570_OM_OM60R61U_(U)
3214-5. Using the driving support systems
4
Driving
Operate the Multi-terrain Select mode
selector switch during 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. 310)
●Center differential lock ( P. 311)
■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
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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
WARNING
■When using the Multi-terrain Select
Observe the following precautions to avoid an accident that could result in death or
serious injuries:
●There is a chance that the se
lected mode may not be the most appropriate in terms of
road conditions such as pitch, slipperiness, undulation, etc. (P. 320)
●Multi-terrain Select is not intended to expa nd the limits of the vehicle. Check the road
conditions thoroughly beforehand , and drive safely and carefully.
NOTICE
■Precaution for use
The Multi-terrain Select is intended for use during off-road driving. Do not use the sys-
tem at any other time.