2006 Lexus GS430 engine

GAUGES, METERS AND SERVICE REMINDER INDICATORS
79
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) Low 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.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
80Although it is no problem to continue driving, have your
vehicle
checked by your Lexus dealer as soon as possible.
(m) Electric Power Steering System Warning
Light
The light comes on when the engine switch is selected in
“IG−ON” mode. If the electric power steering system works
properly, the light turns off after a few seconds. If the system
has malfunctions, the light comes on again.
If 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 or remains on.
 The light stays on while you are driving.
The warning light turning on while racing the engine for a long
time may not indicate malfunction. To turn off the light, restart
the engine and start driving.
CAUTION
If the electric power steering system warning light
comes on, take your vehicle to your Lexus dealer as
soon as possible. In this case, more effort is required
for the steering wheel to turn than usual. Drive your
vehicle while firmly gripping the steering wheel.
(n) PreCollision System Warning Light
The light warns that there is a problem somewhere in the
pre−collision system.
The light comes on when the engine switch is selected in
“IG−ON” mode. If the system works properly, the light goes off
after a few seconds.
If the light does not come on when the engine switch is selected
in “IG−ON” mode, have your vehicle checked by your Lexus
dealer.
(o) Low Fuel Level Warning Light
This light comes on when the fuel level in the tank becomes
very low. Fill the tank as soon as possible.
On inclines or curves, due to the movement of fuel in the tank,
the low fuel level warning light may come on earlier than usual.
(p) Key Reminder Buzzer
This buzzer acts as a reminder to turn off the engine when you
bring out the electronic key from the vehicle with the engine
switch in “IG−ON” or “ACC” mode.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
81
How to check all the service reminder
indicators
(except the low fuel level warning light):
1. Apply the parking brake.
2. Open the door.
The following service reminder indicator should come on. It
goes off when you close the door completely.
3. Select the engine switch in “IG−ON” mode.
The following service reminder indicators should come on.

or
(red)
or
or

(yellow)
WG10
WG6 WG7 WG8
The following service reminder indicators go off after a few
seconds.
WG6
WG8 WG10
GS300 only—The above and following service reminder
indicators go off after a few seconds.
(yellow)

or
The following service reminder indicator goes off after about 6
seconds.
The lights other than the slip indicator light may stay on for
about 60 seconds after the engine is started. It is normal if they
go out after a while.
If any service reminder indicator or warning buzzer does not
function as described above, have it checked by your Lexus
dealer as soon as possible.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
82
MULTIINFORMATION DISPLAY
G13037
The multiinformation display provides various
information, including your vehicle’s driving condition,
outside temperature, and warning messages if your
vehicle is in trouble.
During ordinary driving, cruise information or graphic
information is displayed. However, if any problem occurs
in your vehicle, the display changes to a warning message
screen.
(a) Cruise information
The following information is shown with the engine switch
in “IGON” mode. Each time you push the “DISP” switch,
the displayed information is changed.
 Outside temperature
 Available driving distance
 Average fuel consumption after being refueled
 Current fuel consumption
 Blank
The displayed cruise information values indicate the general
driving condition and may not always reflect precise and actual
conditions.
 Outside temperature
g13047
The outside temperature is displayed. For details, see
“Outside temperature display” on page 106.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
83
Available driving distance
g13039
The available driving distance is calculated and displayed
depending on the amount of remaining fuel.
Average fuel consumption after refueling
g13046
The average fuel consumption after refueling is
calculated and displayed based on the total driving
distance and the total fuel consumption after refueling.
The value is updated every 10 seconds.
When refueling, be sure to stop your vehicle and turn the
engine switch off.
The average fuel consumption could not be calculated in either
of the following cases:
 Refueled by opening the fuel filler door using the manual
lever in the trunk
 Refueled with a small quantity of gasoline
Current fuel consumption
g13040
The current fuel consumption is calculated and displayed
based on the driving distance and the fuel consumption
at 20 revolutions of the engine.
The value is updated every 0.5 seconds.
If you are driving at low speeds just before stopping, the
accurate figure may not be shown.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
84
(b) Graphic information
The following graphic information is shown on the
display.
Lexus park assist system display (if equipped)
 Dynamic radar cruise control display (if equipped)
See page 365 for Lexus park assist system and page 395 for
dynamic radar cruise control.
If you push the Lexus park assist system switch or turn the
engine switch on with the main switch of the Lexus park assist
system on, the Lexus park assist system screen appears for
2 seconds and then the multi −information display returns to the
previous screen.
When you push the main switch of the dynamic radar cruise
control, the dynamic radar cruise control screen appears.
When you push the “DISP” switch with the radar cruise control
screen on the display, the screen changes to cruise
information display.
(c) Warning messages
The following warning messages are shown on the
multiinformation display.
 Open Door Warning
G13041

G13006
G13042

G13043
Hood Open Warning
G13008

GAUGES, METERS AND SERVICE REMINDER INDICATORS
85
Trunk Open Warning
G13007
When any door, hood or trunk is open with the engine
switch in “IGON” mode, a message appears to let you
know which door, the hood or trunk is open. If you
continue driving in this condition, the master warning
light flashes and a warning tone sounds when the vehicle
speed exceeds 5 km/h (3 mph).
If any of the above warning messages appears, stop your
vehicle and close the door, hood or trunk securely.
 Moon Roof Warning
G13013
If the driver’s door is opened with the engine switch
turned off and the moon roof opened, the master warning
light flashes, a warning tone sounds and the above
message appears.
When you leave your vehicle, be sure to close the moon roof.
Parking Brake Release Warning
G13009
If you start driving with the parking brake applied, the
master warning light flashes, a warning tone sounds and
the above message appears when the vehicle speed
exceeds 5 km/h (3 mph).
If the above warning message appears, stop your vehicle and
release the parking brake.
 Headlight Leveling System Failure Warning
G13010
If there is a problem in the automatic headlight leveling
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.

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86
Rear Lights System Failure Warning
G13011
If there is a problem in the rear lights system (tail lights,
license plate light, stop lights, rear side marker light, high
mounted stoplight), 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.
 Low Washer Fluid Warning
G13020
When the fluid level in the tank becomes very low, the
master warning light flashes, a warning tone sounds and
the above message appears.
Fill the tank as soon as possible.
 Low Engine Oil Pressure Warning
G13012
When the engine oil pressure becomes too low, the
master warning light flashes, a warning tone sounds and
the above message appears.
If this message appears while you are driving, pull off the road
to a safe place and stop the engine immediately. Call a Lexus
dealer or qualified repair shop for assistance.
The message may appear when the oil level is extremely low.
It is not designed to indicate low oil level, and the oil level must
be checked using the oil level dipstick.
NOTICE
Do not drive the vehicle while this warning message is
displayed even for one block. It may ruin the engine.