2005 Lexus GX470 cruise control

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406
(b) Using engine braking
To use the braking power of the engine, downshift the
transmission in the way described below:
1Shift into the ª4º position. The transmission will downshift
to fourth gear and engine braking will be enabled.
When the cruise control is being used, even if you
downshift from ªDº to ª4º, engine braking will not be
enabled because the cruise control is not cancelled. If
you need to decrease the vehicle speed, see page 421.
2Shift into the ª3º position. The transmission will downshift
to third gear when the vehicle speed is or becomes lower
than the speed listed below and stronger engine braking
will be enabled.
Transfer ªHº 135 km/h (84 mph) ªLº 52 km/h (32 mph)
3Shift into the ª2º position. The transmission will downshift
to second gear when the vehicle speed is or becomes
lower than the speed listed below and more powerful
engine braking than that of ª3º position will be enabled.
Transfer ªHº 89 km/h (55 mph) ªLº 34 km/h (21 mph)
4Shift into the ªLº position. The transmission will downshift
to first gear when the vehicle speed is or becomes lower
than the speed listed below and maximum engine braking
will be enabled.
Transfer ªHº 39 km/h (24 mph) ªLº 15 km/h (9 mph)
CAUTION
Be careful when downshifting on a slippery surface.
The abrupt change in engine speed could cause the
vehicle to skid or spin.

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The indicator light tells when the differential lock is engaged.
Note that the differential is not still locked as long as the
indicator light remains off.
When
the operation is not completed, the indicator blinks. If the
indicator light does not go off when you push out the center
differential lock switch, 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. To cancel the cruise control system,
see ªCruise controlº on page 419. If the indicator light does not go off when you push out the
center differential lock switch, drive straight ahead while
accelerating or decelerating, or drive in reverse.
See ª(b) Shifting procedureº for further instructions.
(b) Shifting procedure
To shift between unlock and lock modes in ªHº, push the
center differential lock switch.
To shift between unlock and lock modes in ªLº,
push the
center differential lock switch.
To shift between ªHº and ªLº, stop the vehicle, put the
transmission into ªNº and move the four±wheel drive control
lever.
CAUTION
Never move the four±wheel drive control lever if wheels
are slipping. Stop the slipping or spinning before
shifting.

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419
CRUISE CONTROL
The cruise control allows you to cruise the vehicle at a
desired speed over about 40 km/h (25 mph) with your foot
off the accelerator pedal.
Your cruising speed can be maintained although a slight speed
change may occur when driving up or down a gradient, within
the limits of engine performance. On steeper hills, a greater
speed change will occur so it is better to drive without the cruise
control.
CAUTION
 To help maintain maximum control of your vehicle,
do not use the cruise control when driving in heavy
or varying traffic, or on slippery (rainy, icy or
snow±covered) or winding roads.
 Avoid vehicle speed increases when driving
downhill. If the vehicle speed is too fast in relation to
the cruise control set speed, cancel the cruise
control then downshift the transmission to use
engine braking to slow down.
Turning the system on
To operate the cruise control, push the ªON±OFFº button. This
turns the system on. The indicator light in the instrument
cluster shows that you can now set your desired cruising
speed. Another push on the switch will turn the system
completely off.
When the ignition key is turned off, the ªON±OFFº button is also
automatically turned off. To use the cruise control again, push
the ªON±OFFº button again to turn it on.
CAUTION
To avoid accidental cruise control engagement, keep
the ªON±OFFº button off when not using the cruise
control.

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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.