ECU Lexus GS430 2006 Scheduled Maintenance Guide / LEXUS 2006 GS430/GS300 FROM JAN. 2006 PROD. OWNER'S MANUAL (OM30786U)

IMPORTANT INFORMATION ABOUT YOUR LEXUS
ii
IMPORTANT INFORMATION ABOUTYOUR LEXUS
Occupant restraint systems
Lexus encourages you and your family to take the time to read
Section 1 −6 of this Owner’s Manual carefully. In terms of
helping you understand how you can receive the maximum
benefit of the occupant restraint systems this vehicle provides,
Section 1 −6 of this Owner’s Manual is the most important
section for you and your family to read.
Section 1 −6 describes the function and operation concerning
seats, seat belts, SRS airbags and child restraint systems of
this vehicle and some potential hazards you should be aware
of. These systems work together along with the overall
structure of this vehicle in order to provide occupant restraint
in the event of a crash. The effect of each system is enhanced
when it is used properly and together with other systems. No
single occupant restraint system can, by itself, provide you or
your family with the equal level of restraint which these
systems can provide when used together. That is why it is
important for you and your family to understand the purpose
and proper use of each of these systems and how they relate
to each other. The purpose of all occupant
restraint systems is to help reduce
the possibility of death or serious injury in the event of a
collision. None of these systems, either individually or
together, can ensure that there is no injury in the event of
collision. However, the more you know about these systems
and how to use them properly, the greater your chances
become of surviving an acci dent without death or serious
injury.
Seat belts provide the primary restraint to all occupants of the
vehicle, and every occupant of the vehicle should wear seat
belts properly at all times. Children should always be secured
in child restraint systems that are appropriate for their age and
size. SRS (Supplemental Restraint System) airbags are, as
their names imply, designed to work with, and be supplemental
to, seat belts and are not substitutes for them. SRS airbags
can be very effective in reducing the risk of head, chest and
knee injuries by preventing contact of the head, chest and knee
with interior portions of the vehicle.
In order to be effective, the SRS airbags must deploy with
tremendous speed. The rapid deployment of the SRS airbags
makes the SRS airbags themselves potential sources of
serious injury if an occupant is too close to an airbag, or if an
object or some part of his or her body has been placed between
the occupant and the airbag at the time of deployment. This
is just one example of how the instructions in Section 1 −6 of
this Owner’s Manual will help ensure proper use of the
occupant restraint systems, and increase the safety they can
provide to you and your family in the event of an accident.
Lexus recommends you to read the provisions in Section 1− 6
carefully and refer to them as needed during your time of
ownership of this vehicle.

IMPORTANT INFORMATION ABOUT YOUR LEXUS
iii
Event data recorder
Your vehicle has computers that monitor and control certain
aspects of your vehicle. These computers assist in driving and
maintaining optimal vehicle performance. Besides storing
data useful for troubleshooting, there is a system to record data
in a crash or a near car crash event. This is called an Event
Data Recorder (EDR).
The SRS airbag sensor assembly contains the EDR. In a
crash or a near car crash event, this device may record some
or all of the following information:
 Engine speed
 Whether the brake pedal was applied or not
 Vehicle speed
 To what extent the accelerator pedal was depressed
 Position of the transmission selector lever
 Whether the driver and front passenger wore the seat belts
or not
 Driver’s seat position
 Front passenger’s occupant classification
 SRS airbag deployment data
 SRS airbag system diagnostic data If your vehicle is equipped with a vehicle stability control (VSC)
system,
its Electronic Control Unit (ECU) may contain another
EDR. There are a variety of driving situations which include
activating the VSC under wh ich the VSC EDR will record
certain information. The VSC EDR may record some or all of
the following information:
 Behavior of the vehicle
 Steering wheel angle
 Vehicle speed
 To what extent the accelerator pedal was depressed
 To what extent the brake pedal was applied
 To what extent the ECU controlled the condition of the 4
wheels
 Vehicle stability control system diagnostic data
The information above is intended to be used for the purpose
of improving vehicle safety performance. Unlike general data
recorders, the EDR does not record sound data such as
conversation between passengers.

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
iiPage
1
Power window switches 38, 59
. . . . . . . . . . . . . . . . . . .
2 Driving position memory switches 202
. . . . . . . . . . .
3 Window lock switch 60
. . . . . . . . . . . . . . . . . . . . . . . . . .
4 Door lock switch 38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Side vents 274
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Engine switch 348
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Automatic air conditioning controls 258
. . . . . . . . . .
8 Audio system 280
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Clock 106 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
10 Center vents 273
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 Outside temperature display 109
. . . . . . . . . . . . . . . . .
12 Touch screen 219
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Navigation system display (See the separate
“Navigation System Owner’s Manual”)
13 Security indicator light 41
. . . . . . . . . . . . . . . . . . . . . . .
14 Rear window and outside rear view
mirror defogger switch 58 . . . . . . . . . . . . . . . . . . . . . . .
15 Front passenger’s seat belt reminder light 78 . . . . .
16 Emergency flasher switch 62
. . . . . . . . . . . . . . . . . . . . Page
17 Glove box
113
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 Trunk lid opener main switch 130
. . . . . . . . . . . . . . . .
19 Tire pressure warning select switch 448
. . . . . . . . . .
20 Cigarette lighter 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 Cupholders 118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 Seat heater switches or Seat ventilator/heater
switches 63, 65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Traction control system off switch
(Twowheel drive models only) 425 . . . . . . . . . . . . . .
24 Driving pattern selector switch 359
. . . . . . . . . . . . . . .
25 Damping mode select switch
(GS430 only) 424 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Coin box 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 Ashtray 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
28 Automatic transmission selector lever 359 . . . . . . .
29 Tire pressure warning reset switch 446
. . . . . . . . . . .
30 Hood lock release lever 128
. . . . . . . . . . . . . . . . . . . . .
31 Parking brake pedal 358
. . . . . . . . . . . . . . . . . . . . . . . . .
32 Switch box xi
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

For detailed information, refer to the description given in each Section\
.
PICTORIAL INDEX
ivPage
1
Power window switches 38, 59
. . . . . . . . . . . . . . . . . . .
2 Driving position memory switches 202
. . . . . . . . . . .
3 Window lock switch 60
. . . . . . . . . . . . . . . . . . . . . . . . . .
4 Door lock switch 38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Side vents 274
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Engine switch 348
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Automatic air conditioning controls 258
. . . . . . . . . .
8 Audio system 280
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Clock 106 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
10 Center vents 273
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 Outside temperature display 109
. . . . . . . . . . . . . . . . .
12 Touch screen 219
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 Security indicator light 41
. . . . . . . . . . . . . . . . . . . . . . .
14 Rear window and outside rear view
mirror defogger switch 58 . . . . . . . . . . . . . . . . . . . . . . .
15 Front passenger’s seat belt reminder light 78 . . . . .
16 Emergency flasher switch 62
. . . . . . . . . . . . . . . . . . . . Page
17 Glove box
113
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 Trunk lid opener main switch 130
. . . . . . . . . . . . . . . .
19 Tire pressure warning select switch 448
. . . . . . . . . .
20 Cigarette lighter 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 Cupholders 118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 Seat heater switches or Seat ventilator/heater
switches 63, 65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Traction control system off switch
(Twowheel drive models only) 425 . . . . . . . . . . . . . .
24 Driving pattern selector switch 359
. . . . . . . . . . . . . . .
25 Damping mode select switch
(GS430 only) 424 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Coin box 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 Ashtray 110
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
28 Automatic transmission selector lever 359 . . . . . . .
29 Tire pressure warning reset switch 446
. . . . . . . . . . .
30 Hood lock release lever 128
. . . . . . . . . . . . . . . . . . . . .
31 Parking brake pedal 358
. . . . . . . . . . . . . . . . . . . . . . . . .
32 Switch box xi
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

KEYS AND DOORS
20LOCKING THE DOORS WITH ENTRY FUNCTION
G11028
When the engine switch is off and you push the lock
button on the outside door handle while carrying an
electronic key, all the doors will be locked. At this time,
one beep will sound and the turn signal lights will flash
once.
The entry function will be activated within about 1m (3ft.) from
each outside door handle.
However, when you push the lock button on the outside door
handle with any door not closed securely, a beep sounds for
10 seconds. (For details, see page 22.)
If outer foot lights are illuminated, you can turn off the lights by
pushing the lock button on the outside door handle. (For
details, see “Outer foot lights” on page 212.)
NOTICE
If the key is in the vehicle, do not perform door locking
operation, or you might lock your keys inside the
vehicle.
INFORMATION

When locking the doors, be sure to push the lock
button on the outside door handle slowly and firmly.
If you push the button quickly, the doors may not
lock.
 When opening or closing a door, do not touch the
lock button on the outside door handle.
 When an electronic key is used to lock the doors and
an electronic key is left in the effective range of the
entry function in the vehicle, the doors cannot be
unlocked using the entry function. In this case, use
the wireless remote control function to unlock the
doors.
 You cannot activate unlocking function within 3
seconds after the locking function is activated.

KEYS AND DOORS
22
G11030
Engine switch on/off reminder alarm
If you push the lock button on the outside door handle
without turning off the engine switch, an alarm sounds for
2 seconds and the doors will not lock.
Before you push the lock bu tton, make sure you have an
electronic key and that the engine switch is off.
G11031
 Open door warning
If you push the lock button on the outside door handle
while any door is not completely closed, an alarm sounds
for 10 seconds and the doors will not lock.
To stop the alarm, close all the doors securely or push the
“UNLOCK” button on the electronic key.
Before you push the lock bu tton, make sure you have an
electronic key and all the doors are securely closed.

KEYS AND DOORS
25
2Side doors unlocking mode
The setting displays flash alternately for 4 seconds.
When the setting is complete, you will hear the following:
4 beeps (Outside), One chime (Inside)
This mode allows you to unlock the front and rear doors
on your side when you hold any door handle.
3 Single door unlocking mode
The setting display changes as shown. When the setting
is complete, you will hear the following: One beep (Outside), One chime (Inside)
This mode allows you to unlock the door for which you
hold the door handle.
4 All doors unlocking mode
The setting display comes on for 4 seconds. When the
setting is complete, you will hear the following: 2 beeps (Outside), One chime (Inside)
This mode allows you to unlock all the doors when you
hold any door handle.
The display will return to driver’s door unlocking mode when
you attempt to change the setting from all doors unlocking
mode.
INFORMATION
If you get in the vehicle from the driver’s door using an
electronic key while the side doors or one door is set to
be unlocked, all the unlocking controls activated by the
electronic key will be stopped for security. If you get out
of the vehicle from the driver’s door carrying the
electronic key and reaches out of the effective range of
the entry function, unlocking control by the electronic
key will be possible. However, unlocking control may
not be carried out for 5 seconds after you get out from
the vehicle. In this case, perform unlocking operation
again after 5 seconds.

KEYS AND DOORS
31
LOCKING/UNLOCKING THE DOORS
The wireless remote control will not operate when the
engine switch is selected in “ACC” or “IGON” mode.
When you push the ”LOCK” button on the electronic key
briefly, all the doors can be locked from outside the
vehicle.
When they are locked securely, the turn signal lights will flash
and one beep will sound.* However, when you push the
”LOCK” button with any door not closed securely, the buzzer
sounds for 10 seconds.** To stop the buzzer, close all the
doors
securely or push the ”UNLOCK” button. If the electronic
key is left in the vehicle, locking cannot be done.
Make sure all the doors are locked when you leave the vehicle.
Push the ”LOCK” button once again. If they were already
locked, the turn signal lights will flash and one beep will
sound.***
NOTE:
*The turn signal lights can be set not to flash and beep can
be set not to sound. **The buzzer can be set not to sound
if a door is not closed securely. ***The turn signal lights can
be set not to flash.
Ask your Lexus dealer for details. When you push the ”UNLOCK” button, the driver’s door
is unlocked. Pushing that button once again within 3
seconds from the first push, all other doors are also
unlocked.*
NOTE:
*The 2step unlocking function can be changed.
Ask your Lexus dealer for details.
At this time, the turn signal lights will flash twice and two beeps
will sound.* Together with the activation of unlocking, the
interior lights come on for 15 seconds if the interior light switch
is in ”DOOR” position.** For further information, see ”Interior\
lights” on page 100.
You have 30 seconds to open a door after using the wireless
remote unlock feature.*** If a door is not opened by then, all
the doors will be automatically locked again.
Even if the ”LOCK” or ”UNLOCK” button is kept pressed in, the
locking or unlocking operation is not repeated. Release the
button and then push again.
NOTE:
*The turn signal lights can be set not to flash and beep can
be set not to sound. **The interior light can be set not to
come on or the duration of lighting can be changed. ***The
time before automatic relocking can be changed.
Ask your Lexus dealer for details.

KEYS AND DOORS
42
G11006a
Security indicator light
Setting the system
1. Turn the engine switch off.
The engine immobilizer causes the security indicator light to
flash.
2. Close and lock all the doors, trunk and hood using entry
function, wireless remote control or a mechanical key.
If you lock them with entry function or wireless remote control,
the turn signal lights flash once and one beep will sound.* At
this time, the indicator light comes on.
NOTE:
* The turn signal lights can be set not to flash and beep can
be set not to sound.
Ask your Lexus dealer for details.
3. After 30 seconds, the illuminated indicator light
changes flashing and the system is set.
Cancelling the system
When you unlock any door or trunk using entry function,
wireless remote control or a mechanical key, the system
is cancelled.
If you unlock any door or trunk with entry function or wireless
remote control, the turn signal lights flash twice and two beeps
will sound.*
NOTE:
* The turn signal lights can be set not to flash and beep can
be set not to sound.
Ask your Lexus dealer for details.
Activating the system
The alarm sounds for 60 seconds if any of the following are
operated:
Unlocking any door or trunk without using entry function,
wireless remote control or a mechanical key.
 Opening the hood forcibly.
 Reconnecting the battery.
If any door is unlocked during the alarm sounding, its door is
automatically locked.
To stop the alarm: Use either of the following methods.
 Unlock the door or trunk using entry function, wireless
remote control or a mechanical key.
 Start the engine.

SWITCHES
56
G12021
 More than 10 cm (3.9 in.)
To shift the windshield wipers from retracted to rest
position, hold the connection of the wiper arm and wiper
blade and pull it upward along the windshield glass with
the force of about 98 N (10 kgf, 22 lbf.).
NOTICE
To prevent the wiper blades from being deformed, be
sure to hold the connection of the wiper arm and wiper
blade securely.
G12022
To return the windshield wipers to retracted position,
push the connection of the wiper arm and wiper blade
downward.
NOTICE
To prevent the wiper blades from being deformed, be
sure to hold the connection of the wiper arm and wiper
blade securely.