2013 Lexus GX460 height

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2-4. Using other driving systems
GX460_OM_OM60J63U_(U)
Rear height control air suspension
Selecting vehicle heightOperating the switch changes vehicle rear height as follows: Higher
Lower
Vehicle height can be adjusted
only when the engine is running.
The selected height mode will be
shown on the rear height control
air suspension display.
The selected mode will flash while
the height mode is being changed.
: If equipped
The rear height control air suspension allows the driver to control vehicle
rear height in order to adjust drivin g conditions. Select the desired height
with the height control switch.
Height control OFF switch
Height control switch

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When driving
GX460_OM_OM60J63U_(U)■
Height modes
●N mode (normal mode): For ordinary driving
Normal height
● HI mode (high mode): For driving on bumpy roads
1.6 in. (40 mm) higher than the normal rear height
HI mode cannot be selected when vehicle speed exceeds 18 mph
(30 km/h).
● LO mode (low mode): For the ea se of egress/ingress and loading
luggage
0.8 in. (20 mm) lower than the normal rear height
LO mode cannot be selected wh en vehicle speed exceeds 7 mph
(12 km/h).
Disabling the height control
When the height control OFF
switch is pressed with the vehicle
stopped, the vehicle height is fixed
at the current height.
This status is memorized in the sys-
tem even after the engine is
stopped.
The height can be adjusted by
pressing the height control OFF
switch again.
When vehicle speed exceeds
18 mph (30 km/h), the rear height
control air suspension turns on
automatically.

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2-4. Using other driving systems
GX460_OM_OM60J63U_(U)
■When HI mode is selected
The vehicle height will change to N mode when driving at the speeds of 18 mph (30
km/h).
Even if vehicle speed is then reduced to under 18 mph (30 km/h), height will not
return to HI mode.
■When LO mode is selected
The vehicle height will change to N mode when vehicle speed exceeds 7 mph
(12 km/h).
Even if vehicle speed is then reduced to under 7 mph (12 km/h), height will not
return to LO mode.
■Automatic leveling function
Regardless of the number of occupants and the luggage load, vehicle height in any
mode is always adjusted to a fixed height by the automatic leveling function.
■The rear height control air suspension will not operate in the following cases:
●The underbody of the vehicle is touching the surface of the road.
●The area around the suspension is covered with ice.
■Even if you hear an operating noise
This does not indicate a problem in the rear height control air suspension.
■Parking and stopping tips
●If you immediately stop the engine after off-road driving, or park the vehicle for
a long time, the vehicle height may gradually lower. When parking, make sure
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.

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When driving
GX460_OM_OM60J63U_(U)
■When lowering the vehicle
In order to prevent the vehicle height from rising as occupants leave the vehicle,
lowering control will occur for a short while after the engine has been stopped.
■The rear height control air suspension failure warning
●If a malfunction occurs in the rear height control air suspension, N mode is auto-
matically selected. However, the system may not switch to N mode depending
on the location of the malfunction.
●The warning message is displayed on the multi-information display, and the rear
height control air suspension cannot be activated until the malfunction is cor-
rected.
Stop the engine and start it again. If th e warning message turns off, the system is
operating correctly. If the warning me ssage continues to be displayed, have
your vehicle inspected by your Le xus dealer as soon as possible.
CAUTION
■The rear height control air suspension must be turned off
Be sure to observe the following precau tions. Otherwise, the automatic leveling
function may cause vehicle height to change, and you may catch part of your body
in the vehicle, resulting in an accident:
●When jacking up the vehicle, installing tire chains or tying the vehicle with chains/
wires for transportation via flat bed truck, turn off the rear height control air sus-
pension and stop the engine.
●When the vehicle must be towed or disconnecting a trailer, put the vehicle height
in N mode and turn off the rear height control air suspension.
●When the vehicle is stuck, turn off th e rear height control air suspension.

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GX460_OM_OM60J63U_(U)
CAUTION
■Selecting the correct height mode
●HI mode should only be used when 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 turning abruptly, resulting in
an accident.
●Do not select HI mode when loading cargo on the roof luggage carrier.
Because the vehicle’s center of gravity will become higher when in the mode, the
vehicle may become unstable when turning abruptly, resulting in an accident.
●Before lowering vehicle height, check th at there is no one under the vehicle.
NOTICE
■Be careful in any place where overhead space is limited
The vehicle height will rise when a higher mode is selected or cargo is unloaded.
This may cause damage to the vehicle.
■Do not select LO mode when driving on bumpy roads
If the underbody of the vehicle touches a rugged road surface, the vehicle may be
damaged.
■Changing vehicle height
Do not change vehicle height frequently.
The compressor may overheat and stop operation.
■When on the extremely uneven roads with rocks
Sometimes the vehicle height is not adjust ed because it is judged as uneven road
driving.

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When driving
GX460_OM_OM60J63U_(U)
●Pre-collision alert braking (vehicle with driver monitor system):
• The pre-collision braking off switch is not pressed.
• The system determines that the driver is not facing forward.
• Vehicle speed is greater than about 10 mph (15 km/h).
• The speed at which your vehicle is approaching the vehicle running ahead ofyou is greater than about 25 mph (40 km/h).
■Conditions that may trigger the system even if there is no possibility of a collision
●When there is an object by the roadside at the entrance to a curve
●When passing an oncoming vehicle on a curve
●When driving over a narrow iron bridge
●When there is a metal object on the road surface
●When driving on an uneven road surface
●When passing an oncoming vehicle on a left-turn
●When your vehicle rapidly closes on the vehicle in front
●When a grade separation/interchange, sign, billboard, or other structure
appears to be directly in the vehicle’s line of travel
●When a billboard or other metallic struct ure appears to be in the direct line of
travel due to driving on a hill.
●When there are excessive changes in the vehicle height (when it tilts forwards
or backwards)
●When there is an abnormality in the radar sensor
●When passing through certain toll gates
●When driving on a bridge
When the system is activated in the situations described above, there is also a possi-
bility that the seat belts will retract quickly and the brakes will be applied with a force
greater than normal. When the seat belt is locked in the restricted position, stop the
vehicle in a safe place, release the seat belt and refasten it.

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GX460_OM_OM60J63U_(U)
■Situations in which the pre-collision system does not function properly
The system may not function effectively in situations such as the following:
●On roads with sharp bends or uneven surfaces
●If a vehicle suddenly moves in front of your vehicle, such as at an intersection
●If a vehicle suddenly cuts in front of your vehicle, such as when overtaking
●In inclement weather such as heav y rain, fog, snow or sand storms
●When your vehicle is skidding with the VSC system off
●When an extreme change in vehicle height occurs
●When the axis of the radar is out of adjustment
■Automatic cancelation of the pre-collision system
When a malfunction occurs due to sensor contaminations, etc. that results in the
sensors being unable to detect obstacles, the pre-collision system will be automati-
cally disabled. In this case, the system will not activate even if there is a collision pos-
sibility.
■Obstacles not detected
The system cannot detect plastic obstacles such as pylons. There may also be occa-
sions when the system cannot detect pede strians, animals, bicycles, motorcycles,
trees, or snowdrifts.
■When there is a malfunction in the system
Warning lights and/or warning mess ages will turn on or flash. (P. 693, 705)

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GX460_OM_OM60J63U_(U)
2-5. Driving information
Off-road precautions
Off-road vehicle features● Specific design characteristics give it a higher center of gravity than
ordinary passenger cars. This vehicle design feature causes this type of
vehicle to be more likely to rollov er. And, utility vehicles have a signifi-
cantly higher rollover rate than other types of vehicles.
● An advantage of the higher ground clearance is a better view of the
road allowing you to anticipate problems.
● It is not designed for cornering at the same speeds as ordinary passen-
ger cars any more than low-slung sports cars are designed to perform
satisfactorily under off-road cond itions. Therefore, sharp turns at
excessive speeds may cause the vehicle to rollover.
This vehicle belongs to the utility vehicle class, which has higher ground
clearance and narrower tread in relation to the height of its center of grav-
ity to make it capable of performing in a wide variety of off-road applica-
tions.