2006 Lexus GS430 brake

KEYS AND DOORS
40AUTOMATIC DOOR UNLOCKING
You can select the following functions:

Unlocking linked with the shift position
All doors are automatically unlocked when the selector lever
is moved to “P” position.
 Unlocking linked with the engine switch
All doors are automatically unlocked when the the driver’s door
is opened within 10 seconds after the engine switch is selected
in “ACC” or “OFF” mode.
You can set or cancel the automatic unlocking functions:
Be sure to apply the parking brake when performing the
following operations.
To select the unlocking linked with the shift position:
1. Close all doors and select the engine switch in “IG −ON”
mode.
2. Shift the selector lever to the “P” position.
3. Within 10 seconds of selecting the engine switch in “IG −ON”
mode, press and hold the driver’s side power door lock switch
in the unlock position for 5 seconds and then release.
The doors will be locked and unlocked to indicate that the
function is set.
To cancel the function, do the above operation again. To select the unlocking linked with the engine switch:
1. Close all doors and select the engine switch in “IG
−ON”
mode.
2. Shift the selector lever from “P” to the “N” position.
3. Within 10 seconds of selecting the engine switch in “IG −ON”
mode, press and hold the driver’s side power door lock switch
in the unlock position for 5 seconds and then release.
The doors will be locked and unlocked to indicate that the
function is set.
To cancel the function, do the above operation again.

SWITCHES
47
G12002
The automatic light control sensor is on top center of the
instrument panel.
Do not place anything on the instrument panel, and/or do not
affix anything on the windshield to block this sensor.
When the headlights come on, the lights automatically turn off
about 30 seconds after any of the doors is opened and closed
with the engine switch off.* To turn them on again, select the
engine switch in “IG− ON” mode, or turn the headlight switch off
and then twist the knob until the first or second clickstop.
If you are going to park for over one week, make sure the
headlight switch is off.
When the headlight switch is on with all the doors locked and
the trunk closed, pushing the ”LOCK” button on the electronic
key turns off the headlights.
NOTE:
*The time before turning off the lights can be changed.
Ask your Lexus dealer for details. Daytime Running Light System
The headlights turn on at reduced intensity when the parking
brake is released with the engine started, even with the light
switch in the ”OFF” position. They will not
go off until the engine
switch is turned off.
To turn on the other exterior lights and instrument panel lights,
twist the knob to the first clickstop.
Twist the knob to the second clickstop to turn on the headlights
to full intensity for driving at night.
When setting the knob to the third clickstop (”AUTO”), the
headlights will automatic ally adjust to full intensity and/or turn
on the other lights depending on the darkness of the
surroundings. Likewise, as the surroundings become brighter,
the headlights will turn to reduced intensity, ultimately turning
off the other lights.
NOTICE
To prevent the battery from being discharged, do not
leave the lights on longer than necessary when the
engine is not running.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
74
CAUTION
To reduce the chance of injury in case of an accident or
a sudden stop, keep the switch box closed when not in
use while driving.
G13106
The light sensitive optitron meter sensor is located under the
high mounted stoplight.
NOTICE
Do not apply window tint or a sticker on the rear
window. Otherwise the light sensitive optitron meter
may not operate properly.
 If snow, mud, frost or the like is attached to the rear
window just behind the sensor, remove it soon, or the
light sensitive optitron meter may not operate
properly.
SERVICE REMINDER INDICATORS AND WARNING BUZZERS
IF THIS INDICATOR OR
BUZZER COMES ON ...DO THIS.
(a)or
(Red indicator and buzzer)If parking brake is off,
stop immediately and
contact Lexus dealer.
(b)
(Yellow indicator)
Take vehicle to Lexus
dealer. If brake
system warning light
(red) is also on, stop
immediately and
contact Lexus dealer.
(c)
(Indicator and buzzer)
Fasten driver’s seat
belt.
(d)WG5Fasten front
passenger’s seat belt.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
75
IF THIS INDICATOR OR
BUZZER COMES ON ...
DO THIS.
(e)Take vehicle to Lexus
dealer immediately.
(f)Stop immediately and
contact Lexus dealer.
(g)orTake vehicle to Lexus
dealer.
(h)See multi− information
display.
(i)or
Take vehicle to Lexus
dealer.
If brake system
warning light (red) is
also on, stop
immediately and
contact Lexus dealer.
IF THIS INDICATOR OR BUZZER COMES ON ...DO THIS.
(j)Close all doors.
(k)WG10If flashing, take vehicle
to Lexus dealer.
(l)WG6
Adjust tire inflation
pressure.
If light remains on,
contact Lexus dealer.
(m)WG8Take vehicle to Lexus
dealer.
(n)WG7Take vehicle to Lexus
dealer.
(o)Low fuel level
warning lightFill up tank.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
76IF THIS INDICATOR OR
BUZZER COMES ON ...
DO THIS.
(p)Key reminder
buzzerTurn off the engine
switch.
(a) Brake System Warning Light (red) and Buzzer
This light comes on in the following cases when the engine
switch is selected in “IG −ON” mode.
 When the parking brake is applied ...
GS430—This light comes on fo r a few seconds when the
engine is started even after the parking brake is released.
GS300—This light comes on fo r a few seconds when the
engine switch is selected in “IG −ON” mode even after the
parking brake is released.
If you drive your vehicle without releasing the parking brake,
the buzzer sounds and the message “PARK BRAKE” appears
on the multi −information display.
 When the brake fluid level is low ...
CAUTION
It is dangerous to continue driving normally when the
brake fluid level is low.
Have your vehicle checked at your Lexus dealer in the
following case:
The light does not come on even if the parking brake is
applied when the engine is started.
 The light does not come on even if the engine is started with
the parking brake released.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
77
A warning light turning on briefly during operation does not
indicate a problem.
CAUTION
If either of the following conditions occurs, immediately
stop your
vehicle at a safe place and contact your Lexus
dealer.
 The light does not turn off even after the parking
brake is released while the engine is running.
In this case, the brakes may not work properly and
your stopping distance will become longer. Depress
the brake pedal firmly and bring the vehicle to an
immediate stop.
 The brake system warning light remains on together
with the “ABS” warning light.
In this case, not only the antilock brake system will
fail but also the vehicle will become extremely
unstable during braking.
GS430 only—Any of the following conditions may occur,
but do not indicate the malfunction:
The light may stay on for about 60 seconds after the engine
is started. It is normal if it turns off after a while.
 Depressing the brake pedal repeatedly may turn on the
warning light and buzzer. It is normal if the light turns off and
the buzzer stops sounding after a few seconds. 
You may hear a small sound in the engine compartment
after the engine is started or the brake pedal is depressed
repeatedly. This is a pump pulsating sound of the brake
system, and it is not a malfunction.
(b) Brake System Warning Light (yellow)
The light comes on when the engine switch is selected in
“IG−ON” mode.
GS430—If the engine is started, and the traction control
system, vehicle stability control system and hill −start assist
control system work properly, the light turns off after a few
seconds. Thereafter, if any part of the system malfunctions,
the light comes on again.
GS300—If the engine switch is selected in “IG −ON” mode, and
the traction control system, vehicle stability control system and
hill −start assist control system work properly, the light turns off
after a few seconds. Thereafter, if any part of the system
malfunctions, the light comes on again.
Although it is no problem to continue driving, have your vehicle
checked by your Lexus dealer as soon as possible.
(c) Driver’s Seat Belt Reminder Light and Buzzer
The light and buzzer act as a reminder to have the driver buckle
up the seat belt.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
80At this time, vibration may occur. However, if you depress the
accelerator pedal more firmly and slowly, you can drive your
vehicle at low speeds. Have your vehicle checked by your
Lexus dealer as soon as possible.
Even if the abnormality of the electronic throttle control system
is corrected during low speed driving, the system may not be
recovered until the engine is stopped and the engine switch is
selected in “ACC” or “OFF” mode.
Emissions inspection and maintenance (I/M) programs
Your vehicle may not pass a state emission inspection if the
malfunction indicator lamp remains on. Contact your Lexus
dealer to check your vehicle’s emission control system and
OBD (On
−Board Diagnostics) system before taking your
vehicle for the inspection.
For details, see “Emissions inspection and maintenance (I/M)
programs” on page 505.
(h) Master Warning Light
If any system malfunctions, this warning light comes on or
flashes together with a warning tone, and a warning message
appears on the multi−information display. When the cause of
the problem is eliminated, the warning tone and message on
the display will turn off.
(i) ”ABS” Warning Light
The light comes on when the engine switch is selected in
“IG−ON” mode.
GS430—If the anti−lock brake system and the brake assist
system work properly, the light turns of f in a few seconds after
the engine is started. Thereafter, if either system malfunctions,
the light comes on again.
GS300—If the anti−lock brake system and the brake assist
system work properly, the light turns of f in a few seconds after
the engine switch is selected in “IG−ON” mode. Thereafter, if
either system malfunctions, the light comes on again.
When the “ABS” warning light is on, the anti− lock brake system
and the brake assist system do not operate, but the brake
system still operates conventionally.
If any of the following conditions occur, this indicates a
malfunction somewhere in the components monitored by
the warning light system. Contact your Lexus dealer as
soon as possible to service the vehicle.
 The light does not come on when the engine switch is
selected in “IG −ON” mode.
 The light remains on after the engine is started (GS430), or
remains on after the engine switch is selected in “IG −ON”
mode (GS300).
 The light comes on while you are driving.
A warning light turning on briefly during operation does not
indicate a problem.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
81
CAUTION
If the “ABS” warning light remains on together with the
brake system warning light (red), immediately stop your
vehicle at a safe place and contact your Lexus dealer.
In this case, not only the antilock brake system will fail
but also the vehicle will become extremely unstable
during braking.
GS430 only—Either of the following conditions may
occur, but does not indicate a malfunction:
 The light may stay on for about 60 seconds after the engine
is started. It is normal if it turns off after a while.
 Depressing the brake pedal repeatedly may turn on the
light. It is normal if it turns off after a few seconds.
(j) Open Door Warning Light
This light remains on until all the doors are completely closed.
(k) Adaptive Front Lighting System Off
Indicator Light
This light comes on when yo u turn off the Adaptive Front
Lighting System (AFS) by pushing the “AFS OFF” switch.
If there is a problem somewhere in the Adaptive Front Lighting
System (AFS) or automatic headlight leveling system, the light
flashes. At this time, both systems do not operate properly.
Although it is no problem to continue driving, have your vehicle
checked by your Lexus dealer as soon as possible.
(l) Tire pressure warning light
This light comes on when the engine switch is selected in
“IG−ON” mode. If the tire pressure warning system works
properly and tire inflation pressure is appropriate, the light
goes off after a few seconds.
This light comes on or flashes in the following cases when the
engine switch is selected in “IG −ON” mode.
 When the low tire inflation pressure is detected while
driving...
If any tire has low inflation pressure, the light comes on.
The light goes off after the tire inflation pressure is adjusted
to a specified level.
 When initializing the system...
If initialization is completed, the light blinks three times.
 When the system malfunctions...
If the system malfunctions, the light blinks.