2005 LEXUS LS430 ignition

STARTING AND DRIVING
339
Dynamic radar/laser cruise control—
31L361a
Dynamic radar/laser cruise control should not be used in
circumstances which are inappropriate for any cruise control
such as entering freeway on
−ramps or off −ramps.
CAUTION
The dynamic radar/laser cruise control should not be
used when exiting from, or when entering or merging
onto a freeway. When you are following a slower
moving vehicle and exiting, the sensor does not detect
the vehicle and will accelerate to preset speed.
(b) Turning the system on
31L633
To operate the dynamic radar/laser cruise control, push the
“ON− OFF” button. This turns the system on. When the
“CRUISE” indicator light in the instrument cluster comes on
and “RADAR READY” appears on the multi− information
display, you can now set your desired cruising speed and
vehicle −to−vehicle distance. Pushing the “ON −OFF” button
again will turn the system completely off and “CRUISE OFF”
will appear in the multi −information display.
When the ignition is turned off, the “ON−OFF” button is also
automatically turned off. To use the dynamic radar/laser cruise
control again, push the “ON −OFF” button again to turn it on.
When the ignition is turned off, all the preset data is cleared.
When you use the dynamic radar/laser cruise control again,
you need to reset the data.

STARTING AND DRIVING
347
The vehicle
−to− vehicle distance is always set to “Long” when
the ignition switch is turned on.
CAUTION
 Select the vehicletovehicle distance
considering traffic conditions. The approximate
vehicletovehicle distance based on time
interval when driving at 88 km/h (55 mph) is
shown below :
“Long” about 75 m (about 245 ft.) . . . . . . . .
“Middle” about 50 m (about 165 ft.) . . . . . .
“Short” about 30 m (about 100 ft.) . . . . . . .
If the vehicle speed is slower than 88 km/h (55 mph),
the distance will be shorter than the above.
 During long downhill driving, the vehicletovehicle
distance will be shorter than the selected distance.
(e) Braking control
Dynamic radar/laser cruise control is not a collision avoidance
system. If an approach warning is activated, depress the brake
pedal to decelerate to ensure an appropriate
vehicle −to−vehicle distance.
31L177
 1
Under the vehicletovehicle distance control
2Braking activated
Braking control is operating only when the vehicle −to− vehicle
distance control mode is selected and your vehicle speed
exceeds about 40 km/h (25 mph).
If you are getting closer to the vehicle ahead at relatively higher
speed than those of the vehicle ahead or if engine braking
cannot be applied properly, braking control is automatically
activated. The multi− information display changes as shown in
the illustration and the stop/tail lights on your vehicle and on the
vehicle on the display come on.

STARTING AND DRIVING
354Dynamic laser cruise control—

The driving pattern selector switch is changed to the
“normal” or “power” position.
 The wipers are stopped or are switched to intermittent
operation. (Including intermittent and stopped wipers in the
“AUTO” position)
 No direct sunlight from the front
In the above conditions, press the control lever upward in the
“+ RES” direction and release it. The dynamic laser cruise
control will be restored, however, even after the weather
clears, if the setting operation cannot be performed or if the
warning message still appears, the system might have
malfunctioned. Although it is no problem to continue driving,
contact your Lexus dealer.
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If the system malfunction is detected when dynamic
radar/laser cruise control is in the “RADAR READY” mode
or operating, the above message appears.
If this message appears, stop your vehicle in a safe place, turn
the ignition off, and then restart it to reset the system. If the
setting still cannot be made or the same message appears
again, the system might have malfunctioned. Although it is no
problem to continue driving, contact your Lexus dealer.
NOTICE
While you are cruising with the dynamic radar/laser
cruise control on, if the master warning light comes on,
the cruise indicator light flashes, “Check Cruise
System” appears on the multiinformation display and
the warning tone sounds, turn the ignition switch off
and then on again. If the function is cancelled again
after setting or if settings cannot be made, the dynamic
radar/laser cruise control system may be
malfunctioning. Although it is no problem to continue
driving, have your vehicle checked by your Lexus
dealer.

STARTING AND DRIVING
356
(a) Turning the system on
31L636
To operate conventional cruise control mode, push the
“ON−OFF” button. This turns the system on. The “CRUISE”
indicator light in the instrument cluster comes on and “RADAR
READY” appears on the multi −information display. Push the
control lever in the “MODE” direction for longer than 1 second
to change to conventional cruise control mode. The indicator
on the multi− information display is as shown. You can now set
your desired cruising speed. Pushing the “ON −OFF” button
again will turn the system completely off and “CRUISE OFF”
will appear in the multi −information display.
However, once the vehicle− to−vehicle distance control mode
activates and is used, it cannot be changed to the conventional
(fixed speed) cruise control mode using the above operation.
When the ignition switch is turned off, the “ON −OFF” button is
also automatically turned off. To use the dynamic radar/laser
cruise control again, push the “ON −OFF” button again to turn
it on.
CAUTION
To avoid accidentally engaging cruise control , keep the
“ONOFF” button off when not using dynamic
radar/laser cruise control.

STARTING AND DRIVING
361
31L336
The indicator light shows the high mode is selected.
CAUTION
For vehicles equipped with the height control switch, be
sure to turn the ignition switch off before jacking. If this
is not done, the vehicle height adjustment function will
operate, which may cause an accident.
Malfunction warning
If the system is malfunctioning, “Height Hi” appears on the
multi−information display, the master warning light comes on
and a warning tone sounds. Although it is no problem to
continue driving, have the s ystem checked by your Lexus
dealer at the first opportunity.
(b) Damping mode selection
31L144b
 1 Sports position 2Normal position
The damping effect on the shock absorbers is adjusted.
Select either of the following modes using a selector
switch.
Sports mode: Suitable for sporty type driving, such as on
winding mountain roads and high speed driving.
Normal mode: Suitable for ordinary driving.
To turn on the sports mode, push the selector switch on the
“SPORT” side. The indicator comes on in the instrument
cluster and a stronger damping effect than that in normal mode
is automatically provided.
To change to the normal mode, push the switch to the “NORM”
side.

STARTING AND DRIVING
362
TRACTION CONTROL SYSTEM
The traction control system automatically helps prevent
the spinning of rear wheels when the vehicle is started or
accelerated on slippery road surfaces.
When the ignition switch is turned to “ON”, the system
automatically turns on.
CAUTION
Under certain slippery road conditions, full traction of
the vehicle and power against rear wheels cannot be
maintained, even though the traction control system is
in operation. Do not drive the vehicle under any speed
or maneuvering conditions which may cause the
vehicle to lose traction control. In situations where the
road surface is covered with ice or snow, your vehicle
should be fitted with snow tires or tire chains. Always
drive at an appropriate and cautious speed for the
present road conditions.
31L138a
 Slip indicator light
Leave the system on during the ordinary driving so that it
can operate when needed.
You may hear a sound in the engine compartment for a few
seconds just after the vehicle begins to move. This means that
the traction control system is in the self −check mode, but does
not indicate a malfunction.
When the traction control system is operating, the following
conditions occur:
 The system controls the spinning of the rear wheels. At this
time, the slip indicator light blinks.
 You may feel vibration or noise in your vehicle, caused by
operation of the brakes. This indicates the system is
functioning properly.
The slip indicator light comes on for a few seconds when the
ignition switch is turned to “ON”. If the indicator light does not
come on when the ignition is turned on, contact your Lexus
dealer.

STARTING AND DRIVING
363
Traction control off mode
31L344
If your wheels get stuck in a ditch when you are driving on
a severe off road and sand, turn off the traction control
system. This system that controls engine performance
interferes with the process of freeing your wheels.
To turn off: Push “TRAC OFF” switch.
The “TRAC OFF” indicator light will come on.
The vehicle stability control system is always activated even if
the traction control system is turned off.
To turn on: Push “TRAC OFF” switch once again.
The “TRAC OFF” indicator light will go off. “TRAC
OFF” indicator light comes on for a few seconds when
the ignition switch is turned to “ON”. It will come on again when
you push the “TRAC OFF” switch to turn off the system.
In the following cases, contact your Lexus dealer:
 The indicator light does not come on when the ignition
switch is turned to “ON”.
 The indicator light remains on after the ignition is turned on.
 The indicator light comes on in the normal driving mode
while driving.

STARTING AND DRIVING
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CAUTION
Do not rely excessively on the vehicle stability
control system. Even if the vehicle stability control
system is operating, you must always drive carefully
and attentively to avoid serious injury. Reckless
driving will result in an accident. If the slip indicator
light blinks, sounding an alarm, special care should
be taken while driving.
 Only use tires of specified size. The size,
manufacturer, brand and tread pattern for all 4 tires
should be the same. If you use the tires other than
specified, or different type or size, the vehicle
stability control system may not function correctly.
When replacing the tires or wheels, contact your
Lexus dealer.
 In situations where the road surface is covered with
ice or snow, your vehicle should be fitted with snow
tires or tire chains.
31L138a
Slip indicator light
If the vehicle is going to skid during driving, the slip indicator
light blinks and an alarm sounds intermittently. Special care
should be taken while driving.
The slip indicator light comes on for a few seconds when the
ignition switch is turned to “ON”. If the indicator light does not
come on when the ignition is turned on, contact your Lexus
dealer.