Trac Lexus GX460 2010 Scheduled Maintenance Guide / LEXUS 2010 GX460 (OM60E69U) User Guide

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60E69U)
■The Multi-terrain Select can be operated when
●Vehicle speed is less than 7 mph (12 km/h)
●Crawl Control is off
■When using Multi-terrain Select
The following functions cannot be switched on or off.
●VSC
●Active TRAC
●Second start mode
A message will be shown on the multi-information display stating that these func-
tions cannot be switched using the VS C OFF switch or the menu and “ENTER”
switches.
■When selecting a terrain mode
If you are unsure which mode is appropriate, select MOGUL when the four-wheel
drive control switch is in L4 or se lect MUD & SAND when it is in H4.
■When it is difficult to generate traction
MUD & SAND mode provides the largest amount of tire slippage, followed by
LOOSE ROCK, MOGUL and ROCK mode. 
Drivability can be improved by selecting a mode which provides a smaller amount
of tire slippage than the curr ent mode when the amount of tire slippage is large, or
conversely selecting a mode which provides a larger amount 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 functions, refer to the following pages.
●Four-wheel drive system ( P. 3 1 7 )
●Center differential lock ( P. 3 1 8 )

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■When the TRAC or Active TRAC operates continuously
P. 3 3 5
■When the four-wheel drive control switch is in L4 position
If the Multi-terrain Select system is not operating and the four-wheel drive control
switch is in L4, TRAC OFF will be sh own on the multi-information display.
■When there is a malfunction in the system
The Multi-terrain Select indicator light will blink. 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. 2 9 1 )
●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.

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2-4. Using other driving systems
GX460_U.S.A. (OM60E69U)
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.
The low speed four-wheel
drive indicator will come on.

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60E69U)
CAUTION
■While driving
Observe the following precautions. Failure to do so may cause an accident result-
ing 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 slip-
pery or bumpy surface.

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Crawl Control
: If equipped
Allows travel on extremely rough off-road surfaces at a fixed low speed
without pressing the accelerator or brak e pedal. Minimizes loss of traction
or vehicle slip when driving on slippery road surfaces, allowing for stable
driving.
■ Crawl Control switch
ON/OFF switch
Speed selection switch
■ System operation
On/off
The Crawl Control indicator is
lit and the slip indicator flashes
when operating.
Also, the operating status and
speed select status of the Crawl
Control are shown on the multi-
information display.
Higher
Lower

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2-4. Using other driving systems
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■Automatic system cancelation
In the following situations, the system is canceled automatically:
At that time, the buzzer will sound, the slip indicator turns off, and the Crawl Con-
trol indicator flashes. 
A notification will be displayed on the multi-information display for several seconds.
(  P. 6 9 8 )
●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.
When turning off Crawl Control while traveling, stop the vehicle before the Crawl
Control indicator turns off, or drive extremely carefully.
■Function limit
●In the following situations, you will be able to use brake control to drive downhill
at a fixed low speed, but you will be unable to use engine control to drive uphill
at a fixed low speed.
• When the driving mode is set to second start mode.
• When the vehicle speed is higher than 6 mph (10 km/h).
●In the following situation, engine contro l and brake control will stop temporarily: 
At that time, the Crawl Control indicator flashes.
When the vehicle speed is higher than 15 mph (25 km/h).
■When the Crawl Control system is operated continuously
This may cause the brake actuator to overheat. In this case, the Crawl Control sys-
tem will stop operating, a buzzer will sound, the Crawl Control indicator will turn off
after flashing and the TRAC OFF will be show n on the multi-information display. In
this case, quickly stop the vehicle in a sa fe place and give the actuator adequate
time to cool off. Refrain from using the sy stem until the message goes off. (The vehi-
cle can be driven normally during this time.)

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60E69U)
■Operating tips
The system will operate when the shift lever is in a position other than P, however to
make effective use of the system it is recommended that the shift lever be shifted to
2 or 1 range of S mode.
■If the four-wheel drive control switch is in H4
The system does not operate.
■When the downhill assist control system is operated continuously
This may cause the brake actuator to overheat. In this case, the downhill assist con-
trol system will stop operating, a buzzer will sound and the DAC indicator will start
flashing, and the TRAC OFF will be shown on the multi-information display. Refrain
from using the system until the DAC indicator stays on and the message goes off.
(The vehicle can be driven normally during this time.)
■Sounds and vibrations caused by the DAC
●A sound may be heard from the engine 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 DAC.
●Either of the following conditions may occur when the DAC 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.
■System malfunction
●The DAC indicator does not come on when the “ENGINE START STOP”
switch is turned to IGNITION ON mode.
●The “DAC” indicator does not come on when the “DAC” switch is pressed.
●The slip indicator comes on.
In the above cases, have your vehicle checked by your Lexus dealer.

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2-4. Using other driving systems
GX460_U.S.A. (OM60E69U)
■TRAC (Traction Control) for H4 mode
Helps to maintain drive power and prevents the drive wheels from spin-
ning when starting the vehicle or accelerating on slippery roads
■Active TRAC (Traction Control) for L4 mode*
Helps to maintain drive power and prevents the 4 wheels from spinning
when starting the vehicle or accelerating on slippery roads, or in off-road
conditions
■ Hill-start assist control
Helps to prevent the vehicle from rolling backward when starting on an
incline or slippery slope
■KDSS (Kinetic Dynamic Suspension System)
KDSS helps to enhance ride comfort and handling response by using a
hydraulic control system to control the suspension stabilizer bars in
response to road surface and driving conditions during cornering or off-
road driving
■ PCS (Pre-Collision System) (if equipped)
 P. 3 3 8
*: The function only works in vehicles with Multi-terrain Select when Multi-
terrain Select is switched on

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2-4. Using other driving systems
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When driving
GX460_U.S.A. (OM60E69U)
When the VSC/TRAC or Active TRAC/hill-start assist control systems
are operatingIf the vehicle is in danger of slip-
ping or rolling backward when
starting on an incline, or if any of
the drive wheels spins, the slip indi-
cator light flashes to indicate that
the VSC/TRAC or Active TRAC/
hill-start assist control systems are
operating.
A buzzer (intermittent) sounds to
indicate that VSC is operating.
The stop lights and high mounted
stoplight turn on when the hill-start
assist control system is operating.

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Disabling the TRAC or Active TRAC/VSC systemsIf the vehicle gets stuck in fresh snow or mud, the TRAC or Active TRAC/
VSC systems may reduce power from the engine to the wheels. You may
need to turn the system off to enable you to rock the vehicle in order to
free it.
■ Turning off TRAC or Active TRAC system only
To turn the TRAC or Active TRAC
system off, quickly press and
release the button.
The TRAC OFF will be shown on
the multi-information display.
Press the button again to turn the
system back on.
■Turning off both TRAC or Active TRAC and VSC systems
To turn the TRAC or Active TRAC
and VSC systems off, press and
hold the button for more than 3
seconds while the vehicle is
stopped.
The VSC OFF indicator light will
come on and the TRAC OFF will
be shown on the multi- information
display.
Press the button again to turn the
system back on.