2017 TOYOTA LAND CRUISER wheel

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4-5. Using the driving support systems
Driving assist systems
◆Multi Terrain ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if the
brakes are applied while driving on a sl ippery road surface, or in off-road
conditions (such as rough roads, sand and mud)
◆Brake assist
Generates an increased level of braking force after the brake pedal is
depressed when the system detects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces
◆Active TRAC (Traction Control)
Helps to maintain drive power and prevent the 4 wheels from spinning
when starting the vehicle or accelerati ng on slippery roads, or in off-road
conditions
◆Hill-start assist control
Helps to reduce the backward movement of the vehicle 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
To help enhance driving safety and performance, the following
systems operate automatically in response to various driving
situations. Be aware, however, that these systems are supple-
mentary and should not be relied upon too heavily when operat-
ing the vehicle.

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3594-5. Using the driving support systems
4
Driving
◆VGRS (Variable Gear Ratio Steering)
Helps to adjust the wheel turning angle in accordance with the vehicle
speed and steering wheel movement.
◆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 experiences a malfunction.
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.
When the Active TRAC/VSC/Trailer Sway Control/hill-start assist
control systems are operating

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4-5. Using the driving support systems
If the vehicle gets stuck in fres h snow or mud, Active TRAC 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.
Quickly push and release the but-
ton to turn off Active TRAC.
The TRAC OFF indicator will come
on.
This mode can be used when the
transfer mode is H4.
Push the button again to turn the
system back on.
■ Turning off Active TRAC, VSC and Trailer Sway Control
Push and hold the button for more than 3 seconds while the vehicle is
stopped to turn off Active TRAC, VSC and Trailer Sway Control.
The VSC OFF indicator light and TRAC OFF indicator will come on
*.
Push the button again to turn the system back on.
*: On vehicles with pre-collision system, pre-collision brake assist and pre- collision braking will also be disabled. The PCS warning light will come on
and the message will be shown on the multi-information display. ( →P. 235)
■ When the message is displayed on th e multi-information display show-
ing that TRAC has been disabled even if the VSC OFF switch has not
been pressed
Active TRAC, hill-start assist control, Crawl Control cannot be operated. Con-
tact your Toyota dealer.
Disabling the Active TRAC

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3614-5. Using the driving support systems
4
Driving
■Automatic reactivation of Active TR AC, VSC and Trailer Sway Control
Turning the engine switch off after turning off the Active TRAC and VSC sys-
tems will automatically re-enable them.
■ Automatic Active TRAC reactivation
If only the Active TRAC system is turned off, the Active TRAC system will turn
on when vehicle speed increases.
■ Automatic Active TRAC, VSC and Tr ailer Sway Control reactivation
If the Active TRAC, VSC and Trailer Sway Control are turned off, the systems
will not turn on even when vehicle speed increases.
■ If the brake system overheats
The brake system may overheat. In this case, a buzzer will sound, and the
TRAC OFF indicator will flash, and Acti ve TRAC and hill-start assist control
will be temporarily inoperable. 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 go off. (There is no problem with continuing normal driv-
ing.)
■ Sounds and vibrations caused by the Multi Terrain ABS, brake assist,
Active TRAC, VSC, Trailer Sway Co ntrol, hill-start assist control and
VGRS
● 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 any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates 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.
• The brake pedal may pulsate slightly after the Multi Terrain ABS is acti-
vated.
• The brake pedal may move down slightly after the Multi Terrain ABS is activated.
■ Hill-start assist control is operational when
●The shift lever is in D or S.
● The brake pedal is not depressed.
■ VGRS is disabled in the following situations
●During stopping or the steering wheel has been moved for a long time while
driving at lower speeds.
● After the engine is restarted at less than -22 °F (-30 °C).
● If you disconnect the battery with the steering wheel turned, the center\
posi-
tion of the steering wheel could be slightly and temporary hanged. To initial-
ize the VGRS, drive for a short while.

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3634-5. Using the driving support systems
4
Driving
WARNING
■When the VSC and Trailer Sway Control are activated
The slip indicator light flashes. Always drive carefully.
Reckless driving may cause an accident. Exercise particular care when the
indicator light flashes.
■
Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and
total load capacity. In addition, make sure that the tires are inflated to
the specified tire pressure level.
The Multi Terrain ABS, Active TRAC, VSC and Trailer Sway Control will
not function correctly if differen t tires are fitted on the vehicle.
Contact your Toyota dealer for furt her information when replacing tires
or wheels.
■Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will
affect the driving assist systems, and may cause the system to malfunc-
tion.
■ Trailer Sway Control precaution
The Trailer Sway Control system is not able to reduce trailer sway in all situ-
ations. Depending on many factors such as the conditions of the vehicle,
trailer, road surface, and driving environment, the Trailer Sway Control sys-
tem may not be effective. Refer to your trailer owner’s manual for informa-
tion on how to tow your trailer properly.
■ If trailer sway occurs
Observe the following precautions.
Failing to do so may cause death or serious injury.
● Firmly grip the steering wheel. Steer straight ahead.
Do not try to control trailer swaying by turning the steering wheel.
● Begin releasing the accelerator pedal immediately but very gradually to
reduce speed.
Do not increase speed. Do not apply vehicle brakes.
If you make no extreme correction with the steering or brakes, your vehicle
and trailer should stabilize. (→P. 189)

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4-5. Using the driving support systems
NOTICE
■KDSS
In the following situations, there is the possibility that a system malfunction
has occurred, and drive comfort and the vehicle’s ability to travel on poor
road surfaces may be reduced. Take the vehicle to your Toyota dealer
immediately.
● When turning a corner, the vehicle’s body seems to roll further than nor-
mal.
● If after the vehicle has been left in a slanted position for a long time, for
example with the wheels of one side parked on a curb, the vehicle does
not return to level when driving (the vehicle remains slanted to one side
after returning the vehicle to level ground).

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4-6. Driving tips
WARNING
■Off-road driving precautions
Always observe the following precautions to minimize the risk of death, seri-
ous injury or damage to your vehicle:
● Drive carefully when off the road. Do not take unnecessary risks by driving
in dangerous places.
● Do not grip the steering wheel spokes when driving off-road. A bad bump
could jerk the wheel and injure your hands. Keep both hands and espe-
cially your thumbs on the outside of the rim.
● Always check your brakes for effectiveness immediately after driving in
sand, mud, water or snow.
● After driving through tall grass, mud, rock, sand, rivers, etc., check that
there is no grass, bush, paper, rags, stone, sand, etc. adhering or trapped
on the underbody. Clear off any such matter from the underbody. If the
vehicle is used with these materials trapped or adhering to the underbody,
a breakdown or fire could occur.
● When driving off-road or in rugged terrain, do not drive at excessive
speeds, jump, make sharp turns, strike objects, etc. This may cause loss
of control or vehicle rollover causing death or serious injury. You are also
risking expensive damage to your vehicle’s suspension and chassis.

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3694-6. Driving tips
4
Driving
NOTICE
■To prevent the water damage
Take all necessary safety measures to ensure that water damage 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 ulti-
mately damage.
● Water can wash the grease from wheel bearings, causing rusting and pre-
mature failure, and may also enter the differentials, transmission and
transfer case, reducing 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 riverbed 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 compo-
nents.
● Always perform a maintenance inspection after each day of off-road driv-
ing that has taken you through rough terrain, sand, mud, or water. For
scheduled maintenance information, refer to the “Scheduled Maintenance
Guide” or “Owner’s Manual Supplement”.