wheel LEXUS LX470 2007 Owner's Manual

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2-4. Using other driving systems
AHC indicator lightsIf you change the vehicle height mode, the indicator lights change as fol-
lows: • The current mode indicator light w ill turn off, and the selected mode
indicator light will begin flashing.
• Once the change in vehicle height is complete, the selected mode indicator light will change fr om flashing to continuously lit.
If you press the height control switch while AHC is off, the current mode
indicator light will turn on and the selected mode indicator light will begin
flashing while the system starts up.
Once the system has star ted, the current mode indi cator light will turn off.
■Operating conditions
●The engine must be running.
●All side doors and the back door must be closed.
■Automatic change in vehicle height when in the high mode
●If the vehicle speed exceeds 19 mph (30 km/h) with the four-wheel drive con-
trol lever in the “H” position, normal mode is automatically selected.
●If the vehicle speed exceeds 30 mph (50 km/h) with the four-wheel drive con-
trol lever in the “L” position, the vehicle height is lowered to 1.0 in. (25 mm)
higher than the normal mode height. If the vehicle speed drops to 12 mph (20
km/h) or less, high mode is automatically resumed.

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2-4. Using other driving systems
2
When driving
■Extra high mode
If the vehicle becomes stuck, extra high mode may be automatically selected when
the vehicle height is in high mode with the four-wheel drive control lever in the “L”
position.
The vehicle height is raised to 2.8 in. (70 mm) higher than the normal mode height,
or slightly higher.
Extra high mode will change back to high mode when:
• The vehicle is no longer stuck
• The four-wheel drive control lever is shifted to a position other than “L”
●If you push “ ▼” when in extra high mode, normal mode is selected.
●Extra high mode cannot be manually selected.
■Turning off the active height control suspension
●The system will remain off until the switch is pushed again, even if the ignition is
turned off.
●Even if AHC is turned off, the system automatically selects the normal mode if
the vehicle's speed exceeds 19 mph (30 km/h).
■Automatic leveling function
The vehicle is adjusted to a fixed height for each mode, regardless of the number of
occupants and the luggage load.
●However the vehicle cannot be raised if the vehicle load exceeds the following
limits:
• Up to 4 occupants* plus approximately 661 lb. (300 kg) in the normal mode
• Up to 4 occupants* plus approximatel y 375 lb. (170 kg) in the high mode
*: average weight 150 lb. (68 kg) per person
●If the vehicle height cannot be raised when in the normal mode, and “LO” is lit
on the height mode indicator, the vehicle is loaded too heavily. Take extra care
when driving in this condition.
If the vehicle height cannot be raised even after unloading the vehicle, press
“ ▼ ” then “ ▲” on the height mode select switch. If the vehicle height still cannot
be raised, turn the ignition off th en on again, then try once more.

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2-4. Using other driving systems
■If the vehicle height does not change
If the vehicle is loaded too heavily, or the undercarriage has come into contact with
the road surface, the vehicle height cannot be raised/lowered. In this case, the indi-
cator lights will change as follows:
●The current mode indicator light will turn off, and the target mode indicator light
will begin flashing.
●The target mode indicator light will turn off, and the original mode indicator light
will be lit once more. (The vehicle height does not change.)
■In the following cases AHC will not operate
●The brake pedal has been depressed for longer than 5 seconds while the vehi-
cle is stopped.
●The suspension fluid temperature is lower than -22°F (-30°C).
●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).
AHC does not operate when the suspension fluid temperature drops below -22°F
(-30°C).
●In this case, the selected height mode indicator light will flash when the height
mode select switch is pressed, however the vehicle height will not change.
Once the engine has warmed the suspension fluid to within normal operating
limits, AHC will begin operating and the vehicle height will 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 AHC is operating. In this case, push “ ▼” then “▲ ”
on the height mode select switch after further warming the engine to select the
desired vehicle height.

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2-4. Using other driving systems
AVS (Adaptive Variable Suspension)
■Driving mode
●Mode is suitable for ordinary driving.
●Mode or is suitable for heavy load or driving on a unpaved road.
●With the four-wheel drive control lever at “L”, the damping effect suitable for off-
road driving will be provided.
AVS controls the suspension according to the road and driving conditions.
Selecting an optimum driving mode allows good riding comfort and stabil-
ity.
For driving on a bumpy road
For ordinary driving such as
in the city traffic
For moderate high speed
driving
For sporty type driving such
as on winding mountain
roads and high speed driving

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2-4. Using other driving systems
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When driving
Four-wheel drive system
■The four-wheel drive control lever can be operated when
●The shift lever is in the “N” position, and
●The vehicle is stopped completely.
Use the four-wheel drive control lever and center differential lock/unlock
switch to select following transfer and center differential modes.
Four-wheel drive control lever“H” (high speed position)
Normal driving on all types of
roads.
“N” (neutral position)
No power is delivered to the
wheels.
“L” (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 switchLock the center differential
when your vehicle’s wheels get
stuck in a ditch or when you are
driving on a slippy or bumpy
surface.
After the wheels are out of the
ditch or off the slippy or bumpy
surface, unlock the center dif-
ferential.

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2-4. Using other driving systems
■Advice for driving on slippery roads in “L” (low speed position)
●If you shift the four-wheel drive control lever to “L” and the shift lever to “2” while
driving in steep off-road areas, the output of the brake can be controlled effec-
tively by the active traction control system, which assists the driver to control the
driving power of 4 wheels.
●Use the “L” position of the shift lever for maximum power and traction when
your wheels get stuck or when you drive down a steep incline. In the following
cases, the output of the brake can be co ntrolled by the active traction control
system if the engine speed is un der 3,000 rpm (normally under 3,000 rpm
when the wheels get unstuck).
• The four-wheel drive control lever in the “L” position and the shift lever in the
“L” position or the shift lever in the “D”, “4”, “3” or “2” with the transmission
downshifting to first gear.
• The four-wheel drive control lever in the “L” position and the shift lever in the
“R” position.
■The center differential lock/unlock button can be operated when
●The ignition key is in the “ON” position, and
●The four-wheel drive control lever is in the “H” or “L” position.
■Locking /unlocking the center differential
●When the center differential is locked, VSC (vehicle stability control) is auto-
matically turned off. (Center differenti al lock and “VSC OFF” indicator light
come on.)
●When the operation is not completed, th e center differential lock indicator
blinks. If the indicator light does not go off when unlocking the center differen-
tial, drive straight ahead while accelerating or decelerating, or drive in reverse.
●The center differential lock system operation is not completed within 5 seconds
while the cruise control system is set, cancel the cruise control system.

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2-4. Using other driving systems
2
When driving
CAUTION
■While driving
Never move the four-wheel drive control lever if the wheels are slipping. Doing so
may cause an accident resulting in death or serious injury.
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/unlock button when the vehicle is corner-
ing or when its wheels are spin ning freely off the ground.

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2-4. Using other driving systems
Driving assist systems
When the VSC system is operatingIf the vehicle is in danger of slip-
ping, the slip indicator light flashes
and buzzer sounds to indicate that
the VSC systems have been
engaged.
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 supplementary and should not be relied
upon too heavily when operating the vehicle.
■ABS (Anti-lock Brake System)
Restrains the vehicle from slipping when driving on slick road surfaces or
in the event of sudden braking.
■BA (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.
■ TRAC (Active Traction Control)
Maintains drive power and prevents the 4 wheels from spinning when
starting the vehicle or accelerating on slippery roads.
■VGRS (Variable Gear Ratio Steering)
Adjusts the wheel turning angle in accordance with the vehicle speed and
steering wheel movement.

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2-4. Using other driving systems
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When driving
When the TRAC system is operatingIf the 4 wheels spin, the active trac-
tion control system indicator light
flashes to indicate that the TRAC
system have been engaged.
To disable VSC system
If the vehicle gets stuck in fresh snow or mud, VSC system 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. Push the center differential lock/
unlock switch to turn off VSC sys-
tem.
The center differential lock and
“VSC OFF” indicator lights should
come on.
Push the switch again to turn the
system back on.
U.S.A
Canada

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2-4. Using other driving systems
■Sounds and vibrations caused by the ABS, BA, VSC, TRAC and VGRS systems
●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 operat-
ing. 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 ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
■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 batter y with the steering wheel turned, the center position
of the steering wheel could be slightly and temporary changed. To initialize the
VGRS, drive for a short while.