reset LEXUS LS430 2005 Owner's Guide

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338
Dynamic laser cruise control should not be used in the
following conditions, to avoid serious injury or death.
 In bad weather (such as rain, fog, snow, sandstorms
or direct sunlight, or when raindrops or snowflakes
get in the laser radar sensor glass), the
vehicletovehicle distance will not be measured
accurately.
If the wipers are operated at high or low speeds
(including the high and low speed operation with the
wiper lever in the “AUTO” position), dynamic laser
cruise control is automatically cancelled. (In the case
of intermittent wiper operation, it is not cancelled.)
Dynamic laser cruise control is automatically
cancelled when the measurement is extremely
unstable due to bad weather.
 On the roads in heavy traffic or at sharp bends:
As an appropriate speed cannot be maintained,
serious injury or death could result.
 On slippery road surfaces (icy or snowcovered road
surfaces):
The tires will race and you will be unable to control.On steep downhill slopes:
If there is no vehicle detected ahead, the preset speed
will be easily exceeded because of inefficient engine
braking, resulting in serious injury or death. (In this
case, automatic braking will not work.) If there is a
vehicle detected ahead, the delay in deceleration
timing could cause serious injury or death.
 When the warning tone sounds frequently (because
acceleration or deceleration was repeated or
sufficient vehicletovehicle distance was not
maintained), an appropriate vehicle speed cannot be
attained, resulting in serious injury or death.
 On roads with steep and short inclines and declines,
failure to detect the vehicle ahead will shorten the
distance between your vehicle and the vehicle ahead,
resulting in serious injury or death.

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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.

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341
After bringing the vehicle to
the desired speed, press the
control lever downward in the “– SET” direction and release it.
This sets the vehicle at that speed. At this time, the
multi−information display indicates settings such as the preset
vehicle speed, whether a vehicle is present ahead and
selected vehicle −to−vehicle distance. If there is no vehicle
detected ahead, the dynamic radar/laser cruise control screen
does not display the vehicle ahead. At this time, you may take
your foot off the accelerator pedal. If you need to accelerate
− for example, when passing − depress the accelerator pedal
enough for the vehicle to exceed the preset speed. When you
release the accelerator pedal, the vehicle will return to the
control prior to acceleration.
You cannot set a desired speed if the master warning light
comes on, the warning tone sounds and the multi− information
display indicates a warning me ssage such as “Cruise not
Available”, “Clean Radar Sensor” or “Check Cruise System”.
If any of the above messages appears on the display, see
“Vehicle −to−vehicle distance control mode failure warning” on
page 352.
If you turn off the “ON−OFF” button while the warning message
is displayed, the warning message turns off and the
multi−information display switches to another screen. If no
warning message appears on the display, when you turn the
“ON−OFF” button on again, the setting can be made.
You can change the dynamic radar/laser cruise control screen
to another screen even while the warning message is
displayed.
2 Cancelling the preset speed
You can cancel the preset speed by doing any of the following:
a. Pulling the control lever toward you, in the ”CANCEL”
direction.
b. Depressing the brake pedal.
c. Pushing the “ON −OFF” button at the end of the cruise
control lever.
If cancelled by a. or b., the multi−information display shows
“RADAR READY” and the dynamic radar/laser cruise control
enters the ready mode.
If cancelled by c., the “CRUISE” indicator light goes off in the
instrument panel and the multi −information display shows
“CRUISE OFF”. In this case, the preset speed data is cleared,
and you must set the speed from the beginning.

STARTING AND DRIVING
342In the following case, the preset speed automatically
cancels out. At this time, the multiinformation display
shows “RADAR READY” and the dynamic radar/laser
cruise control enters the ready mode.
The vehicle speed falls below about 40 km/h (25 mph). (40
km/h (25 mph) is designated as a cancel speed.)
CAUTION
In this case, the warning tone reminds you that the
dynamic
radar/laser cruise control is cancelled and you
must apply the brakes to slow the vehicle.
In the following cases, the warning messages appear and
the preset speed automatically cancels out. When
dynamic radar/laser cruise control is restored, the
warning messages turn off and dynamic radar/laser
cruise control enters “RADAR READY” mode.
a. The slip indicator light blinks and a warning tone sounds.
(This occurs when the vehicle is about to skid.)
b. The driving pattern selector switch is set to “SNOW” mode.
c. The anti −lock brake system is activated by automatic
braking. (The warning tone sounds.)
d. The sensor does not operate properly because a foreign
matter sticks to the sensor.
Dynamic radar cruise control—
e. The wipers are operated at high speed (including high
speed operation with the wiper lever in the “AUTO” position.)
Dynamic laser cruise control—
f. The wipers are operated at high or low speeds (including
high and low speed operations with the wiper lever in the
“AUTO” position.)

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343
NOTICE
If the preset speed automatically cancels out for other
than the above reasons, do not operate the dynamic
radar/laser cruise control. Although it is no problem to
continue driving, have your vehicle checked by your
Lexus dealer at the earliest opportunity.
3Resetting to a faster speed
Press the control lever upward in the ”+ RES” direction and
hold it. The displayed speed will increase in increments of 5
mph (for U.S.A.) or 5 km/h (for Canada). Release the lever
when the desired speed is attained. The vehicle will gradually
increase to the displayed speed.
Depressing the accelerator pedal and pressing the control
lever downward in the “– SET” direction will not reset to a faster
speed. At this time the set speed falls by 5 mph (for U.S.A.) or
5 km/h (for Canada).

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4Resetting to a slower speed
Press the control lever downward in the “– SET” direction and
hold it. The displayed speed will decrease in increments of 5
mph (for U.S.A.) or 5 km/h (for Canada). Release the lever
when the desired speed is attained. The vehicle will gradually
decrease to the displayed speed.
A quicker way to reset the preset speed is to depress the brake
pedal and then press the control lever downward in the “– SET”
direction.
If the control lever is released when the vehicle speed exceeds
the upper limit of the preset speed traveling downhill while you
are pressing the control leve r downward, the system will
memorize the upper limit of the preset speed as a preset
speed.
Even if you downshift the transmission from “D” or “6” (six\
th
range) to “5” (fifth range), or from “D” or “5” (f\
ifth range) to “4”
(fourth range) in the vehicle −to− vehicle distance control mode,
engine braking will not be enabled because this mode 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. 5 Resuming the preset speed
If the preset speed has been cancelled, when you push the
lever up in the “+ RES” direction while “RADAR READY”
shows up on the multi −information display and at a vehicle
speed of about more than 40 km/h (25 mph), the speed set
prior to cancellation will be restored.
During follow −up cruising, if there are no vehicles running
ahead because they have changed lanes, your vehicle will
accelerate gradually up to the preset speed.

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CAUTION
When a slower vehicle in front of you leaves the lane,
the dynamic radar/laser cruise control will no longer
detect a vehicle ahead and will attempt to accelerate
the vehicle to the faster preset speed.
 When the vehicletovehicle distance control is on
(on followup cruising), your cruising speed is
regulated in proportion to the speed of the vehicle
ahead, so increasing the preset vehicle speed using
the control lever does not accelerate the vehicle.
However, if the vehicle ahead leaves the lane, your
cruising speed will increase up to the preset speed
because the preset speed has been set higher using
the control lever. Confirm the setting on the
multiinformation display.
(d) Changing vehicletovehicle distance
31L635
 1 Long 2Middle 3Short
You can select one of the following vehicletovehicle
distances: “Long”, “Middle” or “Short”. Each time you
push the “DISP2” switch briefly, the setting changes from
“Long” to “Middle” to “Short” and then back to “Long”.
You can confirm the setting on the multiinformation
display.
It should be noted that pushing the “DISP2” switch longer will
change to another screen.
Your vehicle speed changes in proportion to the speed of
the vehicle ahead, maintaining the selected distance.
However, if the vehicle speed is slower, the selected
distance will be shorter than the designated distance.
When the vehicle− to−vehicle distance control mode is
activated or the multi−information display indicates “RADAR
READY”, the vehicle −to −vehicle distance setting can be
changed.

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(i) Vehicletovehicle distance control modefailure warning
31L333
If there is trouble somewhere in the dynamic radar/laser cruise
control while the vehicle −to−vehicle distance control mode is
on, the ”CRUISE” indicator light in the instrument cluster
flashes, the master warning light comes on and the warning
tone sounds, and one or more of the following warning
messages will appear on the multi −information display.
 “Clean Radar Sensor”
 “Cruise not Available”
 “Check Cruise System”
If any warning message shown above appears, the preset
speed automatically cancels out.
w279
Dynamic radar cruise control—
If the system cannot easily measure the
vehicletovehicle distance because of a dirty millimeter
wave radar sensor or grille cover while the dynamic radar
cruise control is on, the above message appears.
If this message appears, clean the sensor and grille cover with
a soft cloth and try setting the preset speed again. If the dirt
is removed without cleaning, the system will automatically
enter the “RADAR READY” mode. If the system does not enter
the “RADAR READY” mode even after cleaning or the
message remains on the display, the system might be
malfunctioning. Although it is no problem to continue driving,
contact your Lexus dealer.
Dynamic laser cruise control—
If the system cannot easily measure the
vehicletovehicle distance because of a dirty laser radar
sensor glass while the dynamic laser cruise control is on,
the above message appears.
If this message appears, clean the sensor glass with a soft
cloth and try setting the preset speed again. If the dirt is
removed without cleaning, the system will automatically enter
the “RADAR READY” mode. If the system does not enter the
“RADAR READY” mode even after cleaning or the message
remains on the display, the system might be malfunctioning.
Although it is no problem to continue driving, contact your
Lexus dealer.

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.
w281
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.

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Conventional (fixed speed) cruise control
mode
This mode allows you to cruise at a desired speed over
about 45 km/h (28 mph) with your foot off the accelerator
pedal.
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, the speed
will change more radically so it is better to drive without cruise
control.
When cruise control is on, the driving pattern of the automatic
transmission is fixed in the normal position, regardless of the
position of the selector switch.
CAUTION
 In the conventional (fixed speed) cruise control
mode, an approach warning does not activate even if
you are too close to the vehicle ahead, as neither the
presence of the vehicle ahead nor the
vehicletovehicle distance is detected. Pay special
attention to the distance between your vehicle and
the vehicle ahead. Always confirm the setting in the
multiinformation display.
 The conventional (fixed speed) cruise control mode
of the dynamic radar/laser cruise control should not
be used in the following conditions, which could
result in death or serious injury.
 To help maintain maximum control of your vehicle,
do not use fixed speed control mode when using
dynamic radar/laser cruise control while driving in
heavy or varying traffic, or on slippery (rainy, icy
or snowcovered) or winding roads.
 Avoid vehicle speed increasing when driving
downhill. If the vehicle speed is too fast in relation
to the preset speed in the fixed speed control
mode, cancel the fixed control mode and then
downshift the transmission to use engine braking
to slow down.