engine LEXUS LX570 2014 Owners Manual

3252-4. Using other driving systems
2
When driving
LX570_OM_OM60L21U_(U) ■
In the following cases the 4-Wheel AHC will not operate ●
The brake pedal has been depressed for a few seconds or longer while the vehi-
cle is stopped. ●
Vehicle height control has not been frequently used. ●
The suspension fluid temperature is lower than -22°F (-30°C). ●
There is ice on the suspension. ●
Driving on bumpy roads which may cause the suspension to fully elongate. ●
If the steering wheel is abruptly turned more than 3/4 of a revolution with the
center differential lock system activated.■
Cold weather operation
It may take longer for the vehicle height to change if the suspension fluid tempera-
ture drops below 5°F (-15°C).
The 4-Wheel AHC does not operate when the suspension fluid temperature drops
below -22°F (-30°C). ●
In this case, even if the height select switch is pressed, the vehicle height will not
change. Once the vehicle has been driven for a short time and the suspension
fluid has been warmed to within normal operating limits, the 4-Wheel AHC will
begin operating and the vehicle height wi ll automatically change to the selected
mode. ●
When the suspension fluid is around -22°F (-30°C), the vehicle height may not
be able to be raised, even if the 4-Wheel AHC is operating. In this case, pull the
height select switch to “  ” then push to “  ” after driving for a short time longer
to select the desired vehicle height.■
Parking and stopping tips ●
If you immediately stop the engine after off-road driving, the vehicle height may
gradually lower. When parking, make su re there is nothing under the vehicle
that may come in contact with the underbody. The vehicle will return to the set
height when the engine is started. ●
The vehicle height may change as the temperature changes when the engine is
stopped. The vehicle will return to the set height when the engine is started.

3262-4. Using other driving systems
LX570_OM_OM60L21U_(U) ■
Propeller shaft noise
If the vehicle height is adjusted on a slope, or with the shift lever in a position other
than “P” or “N” while the vehicle is stopped, you may hear a sound caused by the
expansion and contraction of the propeller shaft. This does no t indicate a malfunc-
tion. ■
4-Wheel AHC failure warning
If a malfunction occurs in the 4-Wheel AHC, normal mode is automatically
selected. However, the system may not sw itch to normal mode depending on the
location of the malfunction.
The warning message is displayed on th e multi-information display, and the 4-
Wheel AHC cannot be activated until the malfunction is corrected.
Stop the engine and start it again. If th e warning message turns off, the system is
operating correctly. If the warning messag e continues to be displayed, have the
vehicle checked at your Lexus dealer as soon as possible.

3272-4. Using other driving systems
2
When driving
LX570_OM_OM60L21U_(U) CAUTION■
When switching the vehicle height mode
Before lowering the vehicle height, check that there are no people under or around
the vehicle, and check for obstacles.
If you do not do this, body parts may be caught in the vehicle, possibly leading to an
accident. ■
Using the high mode
The high mode should only be used wh en driving on rough roads, for example
when driving off-road. Because the vehicle’s center of gravity will become higher
when in the mode, the vehicle may become unstable when turnin g abruptly, result-
ing in an accident. ■
When jacking up the vehicle or installing tire chains
Turn off the height control and stop the engine, otherwise the vehicle height may
change due to the automatic leveling function and you may catch part of your body
in the vehicle, resulting in an accident. ■
When crossing rivers
Select the high mode and turn off the height control. Drive at 18 mph (30 km/h) or
lower. Otherwise the vehicle height may change due to the automatic leveling func-
tion, resulting in an accident. ■
If your vehicle must be towed
Put the vehicle height in the normal mode and turn off the height control, otherwise
the vehicle height may change due to the automatic leveling function and you may
catch part of your body in the vehicle, resulting in an accident. ■
If your vehicle beco mes stuck in a ditch
Turn off the height control, otherwise the vehicle height may change due to the
automatic leveling function, resulting in an accident. ■
When loading cargo on the roof luggage carrier
Do not switch to high mode. Sudden steeri ng could cause the vehicle to lose stabil-
ity due to the vehicle’s higher center of gravity, possibly leading to an accident.

3312-4. Using other driving systems
2
When driving
LX570_OM_OM60L21U_(U) Shifting between “H4” and “L4”
■ Shifting from “H4” to “L4”
Stop the vehicle completely.
Shift the shift lever to “N”.
Push and shift the four-wheel drive control switch to “L4”. Maintain this condition until the low speed four-wheel drive indicator
light turns on.
■ Shifting from “L4” to “H4”
Stop the vehicle completely.
Shift the shift lever to “N”.
Shift the four-wheel drive control switch to “H4”. Maintain this condition until the low speed four-wheel drive indicator
light turns off.■
The four-wheel drive control switch can be operated when ●
The “ENGINE START STOP” 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 light
The indicator light blinks while shifting between “H4” and “L4”. STEP 1
STEP 2
STEP 3
STEP 1
STEP 2
STEP 3

3322-4. Using other driving systems
LX570_OM_OM60L21U_(U) ■
Advice for driving on slippery roads ●
If you shift the four-wheel drive control sw itch to “L4” and the shift lever to the
“2” range of “S” or “D” (vehicles with paddle shift switches) while driving in
steep off-road areas, the output of the brake can be controlled effectively by the
Active TRAC, which assists the driver to control the driving power of 4 wheels. ●
Use the “1” range of “S” or “D” (vehicles with paddle shift switches) of the shift
lever for maximum power and traction when your wheels get stuck or when
driving down a steep incline.■
The center differential lock indicator light
The indicator light blinks while locking/unlocking the center differential. ■
The center differential lock/unlock switch can be operated when ●
The “ENGINE START STOP” switch is in IGNITION ON mode. ●
The vehicle speed is less than 60 mph (100 km/h).■
Locking/unlocking the center differential ●
When the four-wheel drive control switch is in L4 with the center differential
locked, VSC is automatically turned off. (The center differential lock and VSC
OFF indicator lights come on.) ●
If the operation is not completed, the center differential lock indicator blinks. If
the indicator light does not turn off when unlocking the center differential, drive
straight ahead while accelerating or decelerating, or drive in reverse. ●
If the center differential lock/unlock is not completed within 5 seconds while the
cruise control system is on, ca ncel the cruise control system.

3332-4. Using other driving systems
2
When driving
LX570_OM_OM60L21U_(U) ■
If the low speed four-wheel drive indicator light or the center differential lock
indicator light blinks ●
If the low speed four-wheel drive indicator light continues to blink when using
the four-wheel drive control switch, stop the vehicle completely, move the shift
lever to “N” and 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 dis-
engages both the front and rear driveshafts from the powertrain and allows the
vehicle to move regardless of the shift po sition. (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.
To complete the shifting, stop the vehicle completely, return the shift lever to “N”,
and confirm that the shift was completed (the indicator turns on/off). ●
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 low speed four-wheel drive indicator light or the center differential lock indi-
cator light continues to blink even after attempting the above, there may be a mal-
function in the engine, the brake system or the four-wheel drive system. In this case,
you may not be able to shif t between “H4” and “L4”, and the center differential lock
may not be operable. Have the vehicle inspected by your Lexus dealer immediately.

3392-4. Using other driving systems
2
When driving
LX570_OM_OM60L21U_(U) ■
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.
Tu r n A s s i s t f u n c t i o n ●
Crawl Control is operating. ●
The center differential is not locked. ●
The accelerator and brake are not being operated. ●
The shift lever is in any gear other than “P”, “R” or “N”.●
The steering wheel is turned very far.■
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 the Turn Assist function is in
use), and a message stating that Crawl Co ntrol has been turned off will be dis-
played 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.
Tu r n A s s i s t f u n c t i o n
When the center differential is locked, th e buzzer will sound intermittently and the
Turn Assist function will be canceled automatically. In this event, the Turn Assist indi-
cator will go off, and a message stating that the Turn Assist function has been turned
off will be displayed on the multi-information display for several seconds.

3402-4. Using other driving systems
LX570_OM_OM60L21U_(U) ■
Function limitations
Crawl Control ●
In the following situations, brake control can be used to drive downhill at a con-
stant 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 and 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).
Tu r n A s s i s t f u n c t i o n
In the following situations, the Turn Assist fu nction 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
malfunction notification will be displaye d on the multi-information display, the
Crawl Control indicator will go off, and Crawl Control will be temporarily inop-
erable as a result of the brake system over heating. In this event, stop the vehicle
immediately in a safe place, and allow the brake system to cool down sufficiently
until the “TRAC OFF” on the multi-inform ation display goes off. (In the mean-
time, 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 malfunction notification will be dis-
played on the multi-information display as a result of the automatic transmission
system overheating. Stop the vehicle in a safe place until the display goes off.

3412-4. Using other driving systems
2
When driving
LX570_OM_OM60L21U_(U) ■
Sounds and vibrations caused by the Crawl Control system ●
A sound may be heard from the engi ne compartment when the engine is
started or just after the vehicle begins to move. This sound does not indicate that
a malfunction has occurred in Crawl Control system. ●
Either of the following conditions may occur when the Crawl 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 after the vehicle comes to a stop.■
When there is a malfunction in the system
Warning lights and/or warnin g messages will turn on. (  P. 8 2 2 , 8 4 7 )
CAUTION■
When using Crawl Control and Turn Assist function
Do not rely solely on the Crawl Control an d Turn Assist function. 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, th e system may not be able to maintain a
fixed low speed, which may result 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 effective on paved road surfaces.

3482-4. Using other driving systems
LX570_OM_OM60L21U_(U) When the VSC/Trailer Sway Control/ Active TRAC/hill-start assist con-
trol systems are operating
The slip indicator light flashes to
indicate that the VSC/Trailer Sway
Control/Active TRAC/hill-start
assist control systems have been
engaged. The stop lights and high mounted
stoplight turn on when the hill-start
assist control system or Trailer
Sway Control is operating.■ Trailer Sway Control Helps the driver to control trailer sway by selectively applying brake pres-
sure for individual wheels and reducing engine torque when trailer sway is
detected.
Trailer Sway Control is part of the VSC system and will not operate if
VSC turned off or expe riences a malfunction.