warning light LEXUS LS430 2005 Owner's Manual

GAUGES, METERS AND SERVICE REMINDER INDICATORS
99
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When the air conditioning filter should be replaced, the
master warning light comes on, a warning tone sounds
and the above message appears.
If the “Change A/C Filter” appears on the multi−information
display, change the air conditioning filter as soon as possible
because the air filter might have clogged. See “Replacing the
air conditioning filter” on page 249 for details.
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If you push the “OFF” button for the front air conditioning
for about more than 4 seconds after the replacement of the
air conditioning filters, the above message appears and
the attention tone sounds to inform you that the data has
been reset.
When you push the “OFF” button for the front air conditioning
for more than 4 seconds before “Change A/C Filter” appears,
the data will be cleared. Do not reset the data before this
message appears.
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If you push the ignition switch or insert the smart key, and
hold the switch or key in the “LOCK” position for more
than 3 seconds, the master warning light comes on, a
warning tone sounds and the above message appears.
If you release the switch or key, or turn to “ACC”, all the warning
will turn off. If it is difficult to turn the switch or key, be sure to
push the switch or key while turning the steering wheel slightly
in either direction, and then turn the switch or key.
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If the interlock cable for steering lock is faulty, the master
warning light flashes, a warning tone sounds and the
above message appears.
If the above message appears, contact your Lexus dealer as
soon as possible.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
100
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In the following cases, the master warning light flashes, a
warning tone sounds and the above message appears.
A smart key is not detected in the vehicle when you push the
ignition switch. In this case, the above message appears for
5 seconds.
 A smart key is not detected in the vehicle because someone
has taken a smart key outside of the vehicle without turning
off the ignition. At this time, the smart key sounds an alarm.
The above message turns off if you turn the ignition off or the
smart key system detects a smart key in the vehicle.
In addition to either of the above conditions, if you get out from
the vehicle, having a smart key when the ignition switch is in
the “ACC” or “ON” position and the selector lever is in a posit\
ion
other than “P”, “Shift to P Range” and “Key is not Detected”\
appear alternately.
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If you get out from the vehicle, having a smart key when
the ignition switch is in the “ACC” or “ON” position and
the selector lever is in a position other than “P”, the
master warning light flashes, a beep sounds inside the
vehicle and the above message appears. When you shift
the selector lever to the “P” position or start driving, the
beeping stops sounding, the above message turns off.
In addition to the above condition, if the smart key system does
not detect a smart key in the vehicle, “Shift to P Range” and
“Key is not Detected” appear alternately.
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If the smart key system determines that the electronic
code of the detected key does not correspond to the
registered ID when you push the ignition switch or lock
button on the outside door handle, the master warning
light flashes, a warning tone sounds and the above
message appears for 5 seconds.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
101
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If the smart key system determines that the battery
voltage is low (2V to 3V) when the ignition is turned off
more than 20 minutes after turned on, the master warning
light flashes, a warning tone sounds and the above
message appears for 5 seconds.
If the above message appears, the battery needs to be
replaced. Although you can replace the battery referring to
“Replacing the battery (Type A)” on page 42, we recommend
you have it replaced by your Lexus dealer as it is easy to be
scratched.
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The above message appears when the high mode in the
electronically modulated air suspension is selected.
However, if the system fails , the master warning light
comes on, a warning tone also sounds and the above
message appears.
Although it is no problem to continue driving, have your vehicle
checked by your Lexus dealer as soon as possible.
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If the sensor of the Lexus park assist system is
malfunctioning or a cable is broken when the Lexus park
assist system is on, the master warning light comes on, a
warning tone sounds, the malfunctioning sensor flashes
and the above message appears.
The flashing sensor does not operate properly. Although it is
no problem to continue driving, have your vehicle checked by
your Lexus dealer as soon as possible.
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If icicles, snowflakes or mud gets on the sensor of the
Lexus park assist system or it is frozen when the Lexus
park assist system is on, the sensor not be able to detect
an obstacle flashes and the above message appears.
Remove the foreign matter or deice the sensor. If the message
does not appear after cleaning, the system is operating
properly.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
102
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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 master warning light comes on
and the “CRUISE” indicator light flashes. At this time a
warning tone sounds and 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 master warning light comes on and the “CRUISE”
indicator light flashes. At this time a warning tone sounds
and 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.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
103
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If the system cannot easily measure the
vehicletovehicle distance because of the following
conditions while the dynamic radar/laser cruise control is
on, the master warning light comes on, the “CRUISE”
indicator light flashes, and a warning tone sounds. At this
time the above message appears.
Dynamic radar cruise control—
 The driving pattern selector switch is set to the “SNOW”
mode.
 It is determined that it is difficult to make a measurement
because of bad weather (such as extremely hot weather)
 The wipers are operated at high speed with the wiper lever
in the “AUTO” position
Dynamic laser cruise control—
 The driving pattern selector switch is set to the “SNOW”
mode.
 It is determined that it is difficult to make a measurement
because of bad weather (such as rainy, foggy, or snowy
weather)
 The wipers are operated at high or low speeds with the
wiper lever in the “AUTO” position.
 Direct sunlight from the front In the following
cases, the dynamic radar/laser cruise
control switches to the “RADAR READY” mode:
Dynamic radar cruise control—
 The driving pattern selector switch is changed to the
“normal” or “power” position.
 The wipers are stopped or are switched to low speed or
intermittent operation. (Including intermittent and stopped
wipers in the “AUTO” position)
In the above conditions, press the control lever upward in the
“RES/ACC” direction and release it. The dynamic radar 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.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
104Dynamic 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/ACC” 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 a system malfunction is detected when dynamic
radar/laser cruise control is in the “RADAR READY” mode
or operating, the master warning light comes on, the
“CRUISE” indicator light flashes and a warning tone
sounds. At this time 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.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
105
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The master warning light comes on, a warning tone
sounds and the above message appears in the following
conditions:
The millimeter wave radar sensor or the grille cover is
dirty.
Clean the grille or sensor with a soft cloth to remove the dirt.
 The precollision seat belts are activated repeatedly for
a short time.
The system turns of f temporarily for overheating protection,
but turns back on after a while.
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If there is a problem somewhere in the precollision safety
system, the master warning light comes on, a warning
tone sounds, and the above message appears.
If the above message appears, the pre −collision safety system
may not operate. Contact your Lexus dealer as soon as
possible to service the vehicle.
COMPASS
(Vehicles without Navigation System)
13L149
When the ignition is turned on, the previously selected display
appears. If the compass is not displayed, push the “DISP2”
button several times for 1 to 2 seconds to display the compass.
However if you push the main switch of dynamic radar/laser
cruise control to use dynamic radar/laser cruise control, the
dynamic radar/laser cruise control display appears. To change
to the compass display, push the “DISP2” button for longer
than about 1 second.
The compass indicates the direction in which the vehicle
is heading. The illustration shown above indicates that the
vehicle is heading north.

INTERIOR EQUIPMENT
125
(c) Erasing the entire HomeLink\b memory
(all three programs)
To erase all previously programmed codes at one time, press
and hold down the 2 outside buttons for 20 seconds until the
indicator light flashes.
If you sell your vehicle, be sure to erase the programs stored
in the HomeLink
\b memory.
CAUTION
 When programming the HomeLink\b Universal
Transceiver, you may be operating a garage door or
other device. Make sure people and objects are out
of the way of the garage door or other device to
prevent potential harm or damage.
 Do not use this HomeLink
\b Universal Transceiver
with any garage door opener that lacks the safety
stop and reverse feature as required by federal safety
standards. (This includes any garage door opener
model manufactured before April 1, 1982.) A garage
door opener which cannot detect an object
(signaling the door to stop and reverse), does not
meet current federal safety standards. Using a
garage door opener without these features increases
risk of serious injury or death.
This device complies with Part 15 of the FCC Rules
and with RSS− 210 of the IC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
WARNING: This transmitter has been tested and
complies with FCC and IC rules. Changes or
modifications not expressly approved by the party
responsible for compliance could void the user’s
authority to operate the device.

OCCUPANT RESTRAINT SYSTEMS
176
Seat belt pretensioners
16L645
Both front seats and the two outboard rear seats are
equipped with seat belt pretensioners and are designed to
be activated in response to a severe frontal impact.
When the sensor detects a severe frontal impact, the seat belts
are quickly drawn back by the retractor so that the belts snugly
restrain the seat occupants.
The front passenger seat belt pretensioner will not activate if
there is no passenger sitting in the front passenger seat.
However, the front passenger seat belt pretensioner may
activate if luggage is put in the seat, or the seat belt is buckled
up regardless of the presence of the occupant in the seat.
The outboard rear seat belt pretensioners are activated even
with no passengers in the outboard rear seats.
The seat belt pretensioners and SRS airbags may not operate
together in all collisions.
16L649a
 1 Front airbag sensors
2Occupant detection sensor
3Front passenger’s seat belt buckle switch
4Front seat belt pretensioner assembly
5SRS warning light
6Rear seat belt pretensioner assembly
7Airbag sensor assembly
The seat belt pretensioner system consists mainly of the
above components, and their locations are shown in the
illustration.
The seat belt pretensioners are controlled by the airbag sensor
assembly. The airbag sensor assembly consists of a safing
sensor and airbag sensor.

OCCUPANT RESTRAINT SYSTEMS
178
16L330b
This indicator comes on when the ignition switch is turned
to the “ON” position. It goes off after about 6 seconds.
This means the seat belt pretensioners are operating
properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side and curtain shield airbag
sensor assemblies, curtain shield airbag sensor assemblies,
driver’s seat position sensor, driver’s seat belt buckle switch,
occupant detection sensor, front passenger’s seat belt buckle
switch, seat belt pretensioner assemblies, inflators, warning
light, interconnecting wiring and power sources. (For details,
see “Service reminder indicators and warning buzzers” on
page 82.) If any of the following conditions occurs, this indicates a
malfunction of the airbags or seat belt pretensioners. Contact
your Lexus dealer as soon as possible.

When the ignition switch is turned to the “ON” position, the
light does not come on or remains on for more than 6
seconds.
 The light comes on while driving.
 If any seat belt does not retract or cannot be pulled out due
to a malfunction or activation of the relevant seat belt
pretensioner.
 The seat belt pretensioner assembly or surrounding area
has been damaged.