Lexus GX470 2005 Pictorial Index / LEXUS 2005 GX470 OWNER'S MANUAL (OM60B11U)

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420
Setting operation

Each function is described below.
1Setting at a desired speed.
The transmission must be in ªDº or ª4º before you set the cruis\
e
control speed.
Bring the vehicle to the desired speed, press the control lever
downward in the ª± SETº direction and release it. This sets the
vehicle at that speed. Now you may take your foot off the
accelerator pedal. If you need acceleration Ð for example,
when passing Ð depress the accelerator pedal enough for the
vehicle to exceed the set speed. When you release the
accelerator pedal, the vehicle will return to the speed set prior
to the acceleration.
2Cancelling the preset speed
You can cancel the preset speed by either of the following:
a. Pulling the control lever in the ªCANCELº direction.
b. Depressing the brake pedal.
c. Pushing the ªON±OFFº button.
If the vehicle speed falls below about 40 km/h (25 mph), the
preset speed will be automatically cancelled.
If the vehicle speed drops 16 km/h (10 mph) below the preset
speed, the preset speed will also automatically be cancelled.
If the preset speed automatically cancels out for other than
these reasons, have your vehicle checked by your Lexus
dealer at the earliest opportunity.
3Resetting to a faster speed
Press the control lever upward in the ª+ RESº direction and
hold it. Release the lever when the desired speed is attained.
While the lever is held upward, the vehicle will gradually gain
speed.
When the difference between the actual vehicle speed and the
set speed is less than 5 km/h (3 mph), the set speed can be
increased 1.6 km/h (1 mph) each time by pressing the control
lever upward in the ª+ RESº direction quickly.
However, a quicker way to reset is to accelerate the vehicle and
then press the control lever downward in the ª± SETº direction.

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421
4Resetting to a slower speed
Press the control lever downward in the ª± SETº direction and
hold it. Release the lever when the desired speed is attained.
While the lever is held downward, the vehicle speed will
gradually decrease.
When the difference between the actual vehicle speed and the
set speed is less than 5 km/h (3 mph), the set speed can be
lowered 1.6 km/h (1 mph) each time by pressing the control
lever downward in the ª± SETº direction quickly.
However, a quicker way to reset is to depress the brake pedal
and then press the control lever downward in the ª± SETº
direction.
Even if you downshift the transmission from the ªDº position to
ª4º position with the cruise control on, engine braking will not
be applied because the cruise control is not cancelled. To
decrease the vehicle speed, reset to a slower speed with the
cruise control lever or depress the brake pedal. If you use the
brake pedal, cruise control is cancelled.
5Resuming the preset speed
If the preset speed is cancelled by pulling the control lever or
by depressing the brake pedal, pushing the lever up in the ª+
RESº direction will restore the speed set prior to cancellation.
Cruise control failure warning
If the ªCRUISEº indicator light in the instrument cluster flashes
when using the cruise control, push the ºON±OFFº button to
turn the system off and then push it again to turn it on.
If any of the following conditions then occurs, there is some
trouble in the cruise control system.
 The indicator light does not come on.
 The indicator light flashes again.
 The indicator light goes out after it comes on.
If this is the case, contact your Lexus dealer and have your
Lexus inspected.

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422
REAR HEIGHT CONTROL AIRSUSPENSION
This rear height control air suspension controls the
vehicle height depending on the vehicle driving condition.
Select your desired height among the ªHIº (high), ªNº
(normal) and ªLOº (low) modes with the height select
switch.
(a) Vehicle height modes
ªNº (normal) mode: The vehicle height in this mode is
standard. Regardless of the number of occupants or the
luggage loading condition, the vehicle height is always
automatically adjusted to a fixed height in any mode while the
engine is running.
This mode is suitable for ordinary driving. ªHIº
(high) mode: The vehicle height is about 40 mm (1.6 in.)
higher at the rear than the ªNº mode height.
This mode is suitable when driving on the bumpy roads and
through water.
However, when the vehicle speed exceeds about 30 km/h (19
mph) or over in the ªHIº mode, the ªNº mode is automaticall\
y
selected.
CAUTION
The ªHIº mode should be used for severe off±road
driving condition only. As the vehicle's center of gravity
is higher in this setting, the vehicle may become
unstable when turning abruptly resulting in accident.
ªLOº (low) mode: The vehicle height is about 20 mm (0.8 in.)
lower at the rear than the ªNº mode height.
This mode allows you easy access to the vehicle (getting in and
out) and easy loading and unloading operation.
This mode is available when the vehicle speed is under about
12 km/h (7 mph).

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423
NOTICE
Use the ªLOº mode when the vehicle is stopped.Otherwise, when the vehicle speed exceeds about 12km/h (7 mph), ªNº mode is selected automatically. Sobe careful when you drive in any place where theoverhead height is limited.
(b) Vehicle height mode changing condition
To change the vehicle height, it is necessary to meet the
following conditions.
 The engine should be running.
 The height control ªOFFº indicator light should go off. 
When selecting a mode, there is a vehicle speed limit. Refer
to the following table.
Yes = The mode can be selected.
No = The mode cannot be selected.
ªLOº
modeªNº
modeªHIº
mode
Under about
12 km/h (7 mph)Ye sYe sYe s
Under about
30 km/h (19 mph)NoYe sYe s
About 30 km/h
(19 mph) or overNoYe sNo

STARTING AND DRIVING
424In the following cases, the rear height control suspension
will not operate.

The underbody of the vehicle has touched the surface on
bumpy roads.
 The area around the rear suspension is coated with ice.
If the vehicle is moved to its usual location or the ice is removed
and the height select switch is pressed, the vehicle height
control cannot be operated. In this case, turn off and restart the
engine, then push the control switches.
(c) Vehicle height adjustment

1Higher2Lower
To change the mode, push the height select switch on
either side of ª º (higher) or ªº (lower). The height control indicator light indicates which mode is
selected. (See ª(e) Height control indicator lightº described
below.)

Selecting the ªHIº mode
Push the height select switch on the ª º side when the vehicle
speed is under about 30 km/h (19 mph).
To change the ªNº mode to ªHIº: Push the switch once.
To change the ªLOº mode to ªHIº: Push the switch twice. It
takes about 30 se conds until the ªLOº mode changes to the ªHIº
mode.
 Selecting the ªNº mode
To change the ªHIº mode to ªNº: Push the height select
switch on the ª º side once.
To change the ªLOº mode to ªNº: Push the height select
switch on the ª º side once.
 Selecting the ªLOº mode
Push the height select switch on the ªº side while the vehicle
is stopped.
To change the ªNº mode to ªLOº: Push the switch once.
To change the ªHIº mode to ªLOº: Push the switch twice.
Even if the engine is stopped while the vehicle height is being
lowered, the operation continues for up to 25 seconds. If within
this 25 seconds, any of the side doors or the back door is
opened, operation will continue for a further 15 seconds.

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425
NOTICE
If the vehicle height is changed frequently when thevehicle is heavily loaded, the compressor mayoverheat causing the vehicle height adjustmentoperation to stop.
Before you lower the vehicle height with the heightselect switch, check under the vehicle to make surenothing to dam age the vehicle or no one to be injured
is there and that the underbody of the vehicle does not touch the ground.
After unloading, the height of a vehicle equipped with
the rear height control air suspension becomes
slightly higher than the normal vehicle height. Takesufficient care where the overhead height isrestricted.
Do not select the ªLOº mode in the bumpy roads. Ifthe underbody of the vehicle touches the ruggedroad surface, the vehicle may be damaged.

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(d) Turning off the rear height control airsuspension
To turn off the rear height control air suspension with the
vehicle stopped, push the ªHEIGHT CONTROL OFFº
switch. The height control ªOFFº indicator light comes on
and the vehicle height is fixed in the same mode as the
height control switch is pushed.
This status is memorized in the system even after the engine
is stopped.
If you push the switch again, the height control ªOFFº indicator
light goes out and the rear height control air suspension is
turned on.
Even after the rear height control air suspension is turned off
with the ªHEIGHT CONTROL OFFº switch, if the vehicle speed
exceeds 30 km/h (19 mph), the rear height control air
suspension automatically selects the ªNº mode.
CAUTION
If you drive through deep water over about 700 mm (28
in.) in depth, put the vehicle height in the ªHIº mode with
the height select switch and then turn off the rear height
control air suspension by pushing the ªHEIGHT
CONTROL OFFº switch.

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427
NOTICE
When jacking up or installing tire chains, be sure toturn off the rear height control air suspension withthe ªHEIGHT CONTROL OFFº switch and stop theengine. Otherwise, the vehicle height may changebecause of the automatic leveling function resultingin accident.
If your vehicle must be towed, put the vehicle heightin the ªNº mode and turn off the rear height control airsuspension. Otherwise, the vehicle height may
change because of the automatic leveling functionresulting in accident.
If your vehicle gets ditched, turn off the rear heightcontrol air suspension with the ªHEIGHT CONTROLOFFº switch. Otherwise, the vehicle height maychange because of the automatic leveling functionresulting in accident.

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428
(e) Height control indicator lights

1Height control indicator lights
2Height control ªOFFº indicator light
When the ignition switch is turned on, all the indicator lights
come on. Only the indicator light showing the present mode
remains on and all other lights go off after a few seconds. This
means the system operates correctly.
When you change the vehicle height mode, the indicator lights
change as follows:
When changing the vehicle height from the ªNº mode to
ªHIº:
1. The ªNº mode indicator light goes off and the ªHIº mode
indicator light blinks.
2. After the vehicle height control reaches the ªHIº mode, the
ªHIº mode indicator light remains on. If the underbody of the vehicle has touched the surface on
bumpy roads or the area around the rear suspension is
coated with ice, the height control suspension will not
operate and the indicator lights change as follows:
1. The present mode indicator light goes off and the selected
mode indicator light blinks.
2. The selected mode indicator light goes off. (The vehicle
height does not change.) The present mode indicator light
comes on again.
Height control ªOFFº indicator light: When the ignition
switch is t
urned on, this light comes on. If it goes out after a few
seconds, the rear height control air suspension operates
correctly. If you push the ªHEIGHT CONTROL OFFº switch,
the rear height control air suspension is turned off. The height
control ªOFFº indicator light comes on.
In the following cases, there is a problem somewhere in the
rear height control air suspension. Although there is no
problem to continue normal driving, have the rear height
control air suspension checked by your Lexus dealer as soon
as possible.
 The height control ªOFFº indicator light does not come on
when the ignition switch is turned on.
 The height control ªOFFº indicator light blinks.

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(f) Parking and stopping tips
If you immediately stop the engine to park the vehicle after
off±road driving, the vehicle height is lowered slightly as the
vehicle becomes cool. When parking, make sure there is
nothing that will be in contact with the underbody of the vehicle.
When you start the engine, the vehicle returns to the previous
height.
If you park the vehicle for a long time, the vehicle height may
be gradually lowered. When parking for a long time, make sure
there is nothing that will be in contact with the underbody of the
vehicle. When you start the engine, the vehicle returns to the
previous height.
If you stop the engine, the vehicle height may change in
accordance with the change in the temperature. When you
start the engine, the vehicle returns to the previous height.
(g) Rear height control failure warning
If there is a problem somewhere in the rear height control air
suspension, the ªNº mode is automatically selected. If this
occurs, the height control ªOFFº indicator light blinks and the
vehicle height control cannot be activated until the malfunction
is corrected. If this is the case, bring your vehicle to your Lexus
dealer as soon as possible and have it checked.
ELECTRONIC MODULATED SUSPENSION
This electronic modulated suspension adjusts the
damping effect on the shock absorbers with the control
switch. Select one of the 4 modes which is suited to the
driving conditions with the control switch to provide good
riding comfort and stability.
1For driving on a bumpy road
2For ordinary driving such as in the city traffic
3For moderate high speed driving
4For sporty type driving such as on winding mountain
roads and high speed driving
5Soft
6Firm