2006 Lexus GS430 warning light

GAUGES, METERS AND SERVICE REMINDER INDICATORS
89
Electronic Brake System Failure Warning
G13100

G13028
GS430 GS300
If the above message appears and the brake system
warning light (yellow) comes on, the following systems do
not operate. (GS430 only—In some cases, the
multiinformation display shows either “CHECK VSC” or
“CHECK ECB” only.)
 Traction control system
 Vehicle stability control system
 Hill− start assist control system
If the above message appears and the brake system
warning light (yellow) and “ABS” warning light come on,
the following systems do not operate. (GS430 only—In
some cases, the multiinformation display shows either
“CHECK VSC” or “CHECK ECB” only.)
 Anti− lock brake system
 Brake assist system
Although it is no problem to continue driving, have your vehicle
checked by your Lexus dealer as soon as possible.
 Variable Gear Ratio Steering System Warning
(GS430 only)
G13027
If there is a problem in the variable gear ratio steering
system, the master warning light comes on and the above
message appears.
If this message appears, the system does not work. Although
it is no problem to continue driving, have your vehicle checked
by your Lexus dealer as soon as possible.
 FourWheel Drive System Warning (Fourwheel
drive models only)
G13021
If there is a problem in the fourwheel drive system, the
master warning light comes on, a warning tone sounds
and the above message appears.
If the above warning message appears, have your vehicle
checked by your Lexus dealer as soon as possible.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
90
Tire Pressure Warning
G13025
When the low tire inflation pressure is detected while
driving, the low tire pressure warning light and master
warning light come on, and the above message appears.
If the above message appears, adjust the tire inflation pressure
to the specified level as soon as possible. Push the tire
pressure warning system reset switch for a few seconds and
make sure the warning message goes off. If the message still
remains on, have your vehicle checked by your Lexus dealer
as soon as possible.
G13024
This message indicates the tire pressure warning system is
initialized. After replacing the tires or wheels, adjust all 4 tires
to specified tire inflation pressure and initialize the tire pressure
warning system. To initialize the system, start the engine and
push the tire pressure warning system reset switch for longer
than 3 seconds with the vehicle stopped. The above message
appears.
G13026
If there is a problem electrically in the tire pressure
warning system, the low tire pressure warning light and
master warning light blink and the above message
appears.
Although it is no problem to continue driving with the above
message on the display, have your vehicle checked by your
Lexus dealer as soon as possible.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
91
Electronic Key System Warning
G13014
In the following cases, the master warning light flashes, a
warning tone sounds and the above message appears.
 An electronic key is not detected in the vehicle when you
push the engine switch. In this case, the above message
appears for 8 seconds.
 An electronic key is not detected in the vehicle because
someone has taken an electronic key outside of the vehicle
without turning the engine switch off. At this time, the
electronic key sounds an alarm. The above message turns
off if you turn the engine switch off or the entry function
detects an electronic key in the vehicle.
In addition to either of the above conditions, if you get out from
the vehicle, having an electronic key when the engine switch
is selected in “IG −ON” mode and the selector lever is in a
position other than “P”, “SHIFT TO P RANGE” and “KEY IS
NOT DETECTED” appear alternately.
G13015
If you get out from the vehicle, having an electronic key
when the engine switch is selected in “IGON” mode 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 entry function does not
detect an electronic key in the vehicle, “SHIFT TO P RANGE”
and “KEY IS NOT DETECTED” appear alternately.
G13016
If the entry function determines that the battery voltage is
low (2V to 3V) when the engine switch is turned off more
than 20 minutes after turned on, the master warning light
flashes, a warning tone sounds and the above message
appears.
If the above message appears, the battery needs to be
replaced. Although you can replace the battery referring to
“Replacing the battery ” on page 33 , we recommend you have
it replaced by your Lexus dealer as it is easy to be scratched.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
92
G13017
If the steering lock is malfunctioning, the master warning
light comes on, the engine switch indicator light blinks
amber and the above message appears.
The engine will not start in this case. Contact your Lexus
dealer as soon as possible.
G13018
If the steering lock is not unlocked due to the load applied
to the steering wheel when pushing the engine switch, the
master warning light comes on, the engine switch
indicator light blinks green and the above message
appears.
The engine will not start in this case. To start the engine, push
the engine switch again while turning the steering wheel in
either direction.
Lexus Park Assist System Warning
G13077
If icicles, snowflakes or mud gets on the ultrasonic
sensors of the Lexus park assist system when the system
is on, the above message appears and the vehicle symbol
and indicator bars continue flashing until the suspected
sensor is cleaned.
Remove the foreign matter or deice the sensor, the system
returns to normal.
G13076
If the ultrasonic sensor of the Lexus park assist system is
malfunctioning or a sensor cable is broken when the
system is on, the malfunctioning sensor flashes, 2 beeps
sound 5 times and the above message appears.
The flashing sensor is disabled, but other sensors work
properly. Have your vehicle checked by your Lexus dealer as
soon as possible.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
93
Radar Cruise Control Warning
G13073
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.
G13074
If the system cannot easily measure the
vehicletovehicle distance because of the following
conditions while the dynamic radar cruise control is on,
the master warning light comes on, the “CRUISE”
indicator light flashes. At this time a warning tone sounds
and the above message appears.
 The driving pattern selector switch is set to the snow
position 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
In the following cases, the dynamic radar cruise control
switches to the “RADAR READY” mode:
 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)

GAUGES, METERS AND SERVICE REMINDER INDICATORS
94In the above conditions, press the control lever upward in the
“+ RES” 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.
G13075
If the system malfunction is detected when dynamic radar
cruise control is in the “RADAR READY” mode or
operating, 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, stop your vehicle in
a safe place, turn
the engine switch 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 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 engine switch off and
then on again. If the function is cancelled again after
setting or if settings cannot be made, the dynamic radar
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
95
PreCollision System Warning
G13031
If the precollision system is malfunctioning, the
precollision system warning light and master warning
light comes on, a warning tone sounds and the above
message appears.
If the above message appears, the pre− collision system may
not operate. Contact your Lexus dealer as soon as possible.
G13030
In the following conditions, the precollision system
warning light blinks, the master warning light comes on,
a warning tone sounds, and the above message appears.
 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. The above conditions do not indicate a malfunction. If the
problem is removed, the warning lights and message go out
and the system returns to normal.

OCCUPANT RESTRAINT SYSTEMS
155
Seat belt pretensioners
G16015
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.
G16016
 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.