Differential lock LEXUS LX570 2014 Owners Manual

18
LX570_OM_OM60L21U_(U) C
Engine (ignition) switch P. 175
Easy access mode switch P. 321
Center differential lock/unlock
switch P. 330
Power back door main switch P. 57Intuitive parking assist switch
 P. 249
Roll sensing of curtain shield
airbags off switch P. 137VIEW switch
 P. 301
Pictorial index Instrument panel

1952-2. Instrument cluster
2
When driving
LX570_OM_OM60L21U_(U) ■ Indicators
The indicators inform the driver of th e operating state of the vehi-
cle’s various systems. Turn signal indicator
(  P. 1 8 7 ) Crawl Control indicator
(  P. 335)
Headlight high beam indi-
cator (  P. 2 0 8 ) Roll sensing of curtain
shield airbags off indica-
tor (  P. 1 3 7 )(U.S.A.)
Headlight indicator
(  P. 2 0 6 ) “PWR” mode indicator
(  P. 181)(Canada)
Tail light indicator
(  P. 2 0 7 ) Automatic transmission
second start indicator
(  P. 181)
Fog light indicator
(  P. 2 1 8 ) Low speed four-wheel
drive indicator light
(  P. 3 3 0 )
“AFS OFF” indicator
(  P. 2 0 8 ) Center differential lock
indicator (  P. 3 3 0 )
Cruise control indicator
(  P. 230, 234) Security indicator
(  P. 117  119)(if equipped)
Intuitive parking assist
indicator (  P. 2 4 9 ) Easy access mode
indicator (  P. 3 2 1 )* 1
* 1
* 1
* 1

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.

3302-4. Using other driving systems
LX570_OM_OM60L21U_(U) Four-wheel drive system 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
“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.
■ Center differential lock/unlock switch
Lock the center differential
when your vehicle’s wheels get
stuck in a ditch or when driving
on a slippery or bumpy surface. Unlock the center differential
after the wheels have been
freed, or after moving to a flat,
non-slippery surface.

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.

3342-4. Using other driving systems
LX570_OM_OM60L21U_(U) CAUTION■
While driving
Never move the four-wheel drive control switch if the wheels have lost traction.
Doing so may cause an accident resu lting 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 shifte d completely. The transfer mode disengages
both the front and rear driveshafts from the powertrain and allows the vehicle to
move regardless of the shift position. (A t 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 se riously injured. You must complete the shifting of the
transfer mode. (  P. 3 3 0 )
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 slip-
pery or bumpy surface. ●
Do not push the center differential lock/u nlock switch when the vehicle is turning
or when its wheels are spinni ng freely off the ground.

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.

3462-4. Using other driving systems
LX570_OM_OM60L21U_(U) ■
When the vehicle is stuck
Switching the transfer and differential
For the operation of the following functions, refer to the following pages. ●
Four-wheel drive system (  P. 3 3 0 )●
Center differential lock (  P. 3 3 0 )■
When the brake system operates continuously
The brake system may overheat. In this case, a buzzer will sound, the “TRAC OFF”
will be displayed on the multi-information display, 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 sufficiently. (There is no problem with con-
tinuing normal driving.)
After a short time, the message on the multi-information display 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 inspected by your Lexus
dealer immediately.
CAUTION■
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 selected mode may not be the most appropriate in
terms of road conditions such as pitch, slipperiness, undulation, etc. (  P. 3 4 3 )●
Multi-terrain Select is not intended to expand 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
system at any other time.

3652-5. Driving information
2
When driving
LX570_OM_OM60L21U_(U) NOTICE■
To prevent the water damage
Take all necessary safety measures to en sure that water dama ge to the engine or
other components does not occur. ●
Water entering the engine air intake will cause severe engine damage. ●
Water entering the automatic transmission will cause deterioration in shift quality,
locking up of your transmission accompanied by vibration, and ultimately dam-
age. ●
Water can wash the grease from wheel bearings, causing rusting and premature
failure, and may also enter the differentials, transmission and transfer case, reduc-
ing the gear oil’s lubricating qualities.■
When you drive through water
If driving through water, such as when crossing shallow streams, first check the
depth of the water and the bottom of the river bed for firmness. Drive slowly and
avoid deep water. ■
Inspection after off-road driving ●
Sand and mud that has accumulated in brake drums and around brake discs may
affect braking efficiency and may damage brake system components. ●
Always perform a maintenance inspection after each day of off-road driving that
has taken you through rough terrain, sand, mud, or water. For scheduled mainte-
nance information, refer to the “Warra nty and Services Guide/Owner’s Manual
Supplement/Schedul ed Maintenance”.