Lexus GS430 2006 Scheduled Maintenance Guide / LEXUS 2006 GS430/GS300 FROM JAN. 2005 PROD. (OM30649U) Manual Online

SWITCHES
60
Be sure to turn the engine switch to “OFF” mode
when you leave your vehicle.
 Never leave anyone (particularly a small child) alone
in your vehicle, especially when the engine switch is
on. Otherwise, he/she could use the power window
switches and get trapped in a window. Unattended
persons (particularly a small child) can be involved in
a serious accident.
 Never try jamming any part of your body to activate
the jam protection function intentionally.
 The jam protection function may not work if
something gets caught just before the window fully
closed.EMERGENCY FLASHER SWITCH
G12015
To turn on the emergency flashers, push the switch. To
turn them off, push the switch again.
All the turn signal lights will flash. The emergency flashers will
work with the engine running or off and with or without the
electronic key.
Turn on the emergency flashers to warn other drivers if you
must stop your vehicle where it might be a traffic hazard.
Always pull your vehicle as far off the road as possible.
The turn signal light switch will not work when the emergency
flashers are in operation.
NOTICE
To prevent the battery from being discharged, do not
leave the switch on longer than necessary when the
engine is not running.

SWITCHES
61
SEAT HEATER SWITCHES
G12024
To use the seat heater switches, pull the lever to slide the
rear console box cover backward.
G12025
 1For driver’s seat 2For front passenger’s seat
G12026
To turn on the heater, turn the dial as shown. The indicator
light (yellow) comes on.
The engine switch must be selected in “IG −ON” mode.
The heating level will be increased as you turn the dial to the
higher number.
To disable this function, turn the dial to the “0” position. The
indicator light goes off. Keep the dial in this position when not
in use.

SWITCHES
62
CAUTION
Occupants must use caution when operating the seat
heater because they may experience minor burns even
at low temperatures. Use extra caution for;
Babies, small children, elderly persons, sick persons
or persons with physical disabilities
 Persons who have sensitive skin
 Persons who are exhausted
 Persons who have taken alcohol or drugs which
induce sleep (sleeping drug, cold remedy, etc.).
To prevent the seat from overheating, do not use the
seat heater with a blanket, cushion, or other insulating
objects which cover the seat.
NOTICE
 Do not put unevenly weighted objects on the seat and
do not stick sharp objects (needles, nails, etc.) into
the seat.
 When cleaning the seats, do not use organic
substances (paint thinner, benzine, alcohol,
gasoline, etc.). They may damage the heater and seat
surface.
 To prevent the battery from being discharged, turn
the switches off when the engine is not running.

SWITCHES
63
SEAT VENTILATOR/HEATERSWITCHES
The seats can be warmed and deliver airflow from the seat
surface using seat ventilator/heater switches.
G12027
To use the seat heater/ventilator switches, pull the lever to
slide the rear console box cover backward.
G12028
 1 For driver’s seat 2For front passenger’s seat

SWITCHES
64
Seat ventilator
G12029
To turn on the seat ventilator, turn the dial as shown. The
indicator light (green) comes on.
The engine switch must be selected in “IG−ON” mode.
More air will be delivered as you turn the dial to the higher
number.
After the switch is turned on, it takes several minutes until you
feel cool.
To disable this function, turn the dial to the “0” position. The
indicator light goes off. To disable this function, turn the dial to
the “0” position. The indicator light goes off. Keep the dial in
this position when not in use.
NOTICE
 Do not put unevenly weighted objects on the seat and
do not stick sharp objects (needles, nails, etc.) into
the seat.
 When cleaning the seats, do not use organic
substances (paint thinner, benzine, alcohol,
gasoline, etc.). They may damage the seat ventilation
/ heating system and seat surface.
 When cleaning the seats, fully wring out a towel to be
used. The wet seats may cause the seat
ventilation/heating system to malfunction.
 To prevent the battery from being discharged, turn
the switches off when the engine is not running.

SWITCHES
65
Seat heater
G12030
To turn on the seat heater, turn the dial as shown. The
indicator light (yellow) comes on.
The engine switch must be selected in “IG−ON” mode.
The heating level will be increased as you turn the dial to the
higher number.
To disable this function, turn the dial to the “0” position. The
indicator light goes off. Keep the dial in this position when not
in use.
CAUTION
Occupants must use caution when operating the seat
heater because they may experience minor burns even
at low temperatures. Use extra caution for;
 Babies, small children, elderly persons, sick persons
or persons with physical disabilities
 Persons who have sensitive skin
 Persons who are exhausted
 Persons who have taken alcohol or drugs which
induce sleep (sleeping drug, cold remedy, etc.).
To prevent the seat from overheating, do not use the
seat heater with a blanket, cushion, or other insulating
objects which cover the seat.

SWITCHES
66
NOTICE
Do not put unevenly weighted objects on the seat and
do not stick sharp objects (needles, nails, etc.) into
the seat.
 When cleaning the seats, do not use organic
substances (paint thinner, benzine, alcohol,
gasoline, etc.). They may damage the seat
ventilation/heating system and seat surface.
 When cleaning the seats, fully wring out a towel to be
used. The wet seats may cause the seat
ventilation/heating system to malfunction.
 To prevent the battery from being discharged, turn
the switches off when the engine is not running.

SECTION 1 – 3
67
INSTRUMENTS AND CONTROLS
Gauges, meters and service reminder
indicators
Fuel gauge68
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . .
Engine coolant temperature gauge 68
. . . . . . . . . . . . . . . . . . . . . . . . . .
Tachometer 69
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Odometer and trip meter 70
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light sensitive optitron meter 71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service reminder indicators and warning buzzers 72
. . . . . . . . . . . . . .
Multi−information display 82
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument panel light control 96
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GAUGES, METERS AND SERVICE REMINDER INDICATORS
68
FUEL GAUGE
G13001
Low fuel level warning light
The gauge indicates the approximate quantity of fuel
remaining in the tank when the engine switch is selected
in “IGON” mode.
It is a good idea to keep the tank over 1/4 full.
If the fuel level approaches ”E” or the low fuel level warning light\
comes on, fill the fuel tank as soon as possible.
On inclines or curves, due to the movement of fuel in the tank,
the fuel gauge needle may fluctuate or the low fuel level
warning light may come on earlier than usual.
If the fuel tank is completely empty, the malfunction indicator
lamp comes on. Fill the fuel tank immediately.
The indicator lamp goes off after driving several times. If the
indicator lamp does not go off, contact your Lexus dealer as
soon as possible. See the inner back cover for fuel capacity and recommended
fuel selection.
ENGINE COOLANT
TEMPERATURE GAUGE
G13002
 Normal range
The gauge indicates the engine coolant temperature when
the engine switch is selected in “IGON” mode. The
engine operating temperature will vary with changes in
weather and engine load.
If the needle points to the red zone or higher, stop your vehicle
and allow the engine to cool.
Your vehicle may overheat during severe operating conditions,
such as:
 Driving up a long hill on a hot day.
 Reducing speed or stopping after high speed driving.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
69

Idling for a long period with the air conditioning on in
stop−and−go traffic.
NOTICE
Do not remove the thermostat in the engine cooling
system as this may cause the engine to overheat. The
thermostat is designed to control the flow of coolant
to keep the temperature of the engine within the
specified operating range.
 Do not continue driving with an overheated engine.
See ”If your vehicle overheats” on page 467.
TACHOMETER
G13003
The tachometer indicates engine speed in thousands of
rpm (revolutions per minute). Use it while driving to
prevent engine overrevving.
Driving with the engine running too fast causes excessive
engine wear and poor fuel economy. Remember, in most
cases the slower the engine speed, the greater the fuel
economy.
NOTICE
Do not let the indicator needle get into the red zone. This
may cause severe engine damage.