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

G00094
PICTORIAL INDEX
ix
FRONT SEAT
Page
1 Seat position, seat cushion
angle and height control
switch 145, 146
. . . . . . . . . . . . . . . . . . . .
2 Seatback angle control
switch 146
. . . . . . . . . . . . . . . . . . . . . . . .
3 Lumbar support control
switch 147
. . . . . . . . . . . . . . . . . . . . . . . .
For detailed information, refer to the
description given in each Section.

QUICK REFERENCE
2
1. DRIVER’S SEAT
G00151
Seat position
Seat cushion angle
Seat cushion height
Head restraint height
Seatback
angle
Lumbar support
Head restraint angle
2. STEERING WHEEL
TILT STEERING COLUMN
G00102
To tilt the steering column up or down to the desired angle,
push the control switch in the required direction and
release the button when the steering column reaches the
desired angle.
 TELESCOPIC STEERING COLUMN
G00103
To move the steering column to the desired position, push
the control switch away from you or pull it toward you until
the steering column reaches the desired position.

OCCUPANT RESTRAINT SYSTEMS
144
Seat adjustment precautions
CAUTION
Do not adjust the seat while the vehicle is moving as
the seat may unexpectedly move and cause the
driver to lose control of the vehicle.
 Be careful that the seat does not hit a passenger,
luggage or the rear seat.
NOTICE
Do not operate the control switch in more than one
dimension at a time. It may cause electrical overload.
Adjusting front seats
G16001
 1
Seat position, seat cushion angle and height control
switch
2 Seatback angle control switch
3Lumbar support control switch

OCCUPANT RESTRAINT SYSTEMS
146
Adjusting seatback angle
g16003
Move the control switch in the desired direction.
Releasing the switch will stop the seatback in that position.
CAUTION
Avoid reclining the seatback any more than needed.
The seat belts provide maximum protection in a frontal
or rear collision when the driver and the front passenger
are sitting up straight and well back in the seats. If you
are reclined, the lap belt may slide past your hips and
apply restraint forces directly to the abdomen or your
neck may contact the shoulder belt. In the event of a
frontal collision, the more the seat is reclined, the
greater the risk of death or personal injury .
Adjusting seat cushion angle and height
G16004
Move the control switch in the desired direction.
Releasing the switch will stop the seat cushion in that position.

OCCUPANT RESTRAINT SYSTEMS
148
ARMREST
G16125
To use the armrest, pull it down as shown above.
NOTICE
To prevent damage to the armrest, avoid putting heavy
loads on it.
HEAD RESTRAINTS
For your safety and comfort, adjust the head restraint
before driving.
Front seats
G16002
Driver’s seat
The height of the driver’s head restraint is automatically
adjusted along with the seat position movement when the
seat position control switch is used.
When the seat is adjusted to the foremost (or rearmost)
position, the head restraint is adjusted to the lowest (or
highest) position.
The height of the head restraint can be adjusted manually.

OCCUPANT RESTRAINT SYSTEMS
149
G16250
To adjust the height of the head restraint manually, adjust
it while pushing the button located on the shoulder.
After adjusting the head restraint manually, even if you adjust
the seat to the foremost (or rearmost) position using seat
position control, the head restraint may not be adjusted to the
lowest (or highest) position. And if the head restraint reaches
the highest (or lowest) position while the seat is being adjusted
backward (or forward), the head restraint will be fixed in that
position.
G16130
To move the head restraint forward or rearward, move the
head restraint as shown.
The head restraint is most effective when it is close to your
head. Therefore, using a cush ion on the seatback is not
recommended.
CAUTION
Adjust the center of the head restraint so that it is
closest to the top of your ears.

STARTING AND DRIVING
355
How to start the engine
Before starting the engine, be sure to follow the instructions.
CRANKING HOLD FUNCTION
Once you push the engine switch while the brake pedal is
depressed, the cranking hold function continues to crank the
engine in “IG−ON” mode until it starts.
The function stops cranking the engine after about 25 seconds
at maximum if the engine has not started yet. When you crank
the engine again, wait a few seconds and restart it.
BEFORE STARTING THE ENGINE
1. Check the area around the vehicle before entering it.
2. Adjust seat position, seatback angle, seat cushion angle,
seat cushion height, head restraint height and steering wheel
angle.
3. Adjust the inside and outside rear view mirrors.
4. Lock all doors.
5. Fasten seat belts.
Remember to check that the service reminder indicators
function when the engine switch is selected in “IG− ON” mode,
and check the fuel gauge to see that you have sufficient fuel. BEFORE CRANKING
1. Apply the parking brake firmly.
2. Turn off unnecessary lights and accessories.
3. Put the selector lever in ”P”. If you need to restart the engine
while the vehicle is moving, put the selector lever in ”N”. A
starter safety device will prevent the starter from operating if
the selector lever is in any drive position.
4. Depress
the brake pedal and hold it to the floor until driving
off.
The multiport fuel injection system/sequential multiport fuel
injection system in your engine automatically controls the
proper air −fuel mixture for starting. You can start a cold or hot
engine as follows:

STARTING AND DRIVING
435
The anti
−lock brake system becomes operative after the
vehicle has accelerated to a speed in excess of approximately
10 km/h (6 mph). It stops operating when the vehicle
decelerates to a speed below approximately 5 km/h (3 mph).
Depressing the brake pedal on slippery road surfaces such as
on a manhole cover, a steel plate at a construction site, joints
in a bridge, etc. on a rainy day tends to activate the anti −lock
brake system.
You may hear a click or motor sound in the engine
compartment for a few seconds when the engine is started or
just after the vehicle begins to move. This means that the
anti−lock brake system is in the self− check mode, and does not
indicate a malfunction.
When the antilock brake system is activated, the
following conditions may occur. They do not indicate a
malfunction of the system:
 You may hear the anti− lock brake system operating and feel
the brake pedal pulsating and the vibrations of the vehicle
body and steering wheel. You may also hear the motor
sound in the engine compartment even after the vehicle is
stopped.
 At the end of the anti−lock brake system activation, the
brake pedal may move a little forward.
CAUTION
Do not overestimate the antilock brake system:
Although the antilock brake system assists in
providing vehicle control, it is still important to drive
with all due care and maintain a moderate speed and
safe distance from the vehicle in front of you, because
there are limits to the vehicle stability and effectiveness
of steering wheel operation even with the antilock
brake system on.
If tire grip performance exceeds its capability, or if
hydroplaning occurs during high speed driving in the
rain, the antilock brake system does not provide
vehicle control.
Antilock brake system is not designed to shorten the
stopping distance: Always drive at a moderate speed
and maintain a safe distance from the vehicle in front of
you. Compared with vehicles without an antilock
brake system, your vehicle may require a longer
stopping distance in the following cases:
 Driving on rough, gravel or snowcovered roads.
 Driving with tire chains installed.
 Driving over the st eps such as the joints on the road.
 Driving on roads where the road surface is pitted or
has other differences in surface height.

CHASSIS
555
DOT and Tire Identification Number (TIN)
63SA11a
The illustration indicates typical DOT and Tire
Identification Number (TIN)
1“DOT” symbol
2Tire Identification Number (TIN)
3Tire manufacturer’s identification mark
4Tire size code
5Manufacturer’s optional tire type code
(3 or 4 letters)
6Manufacturing week
7Manufacturing year
The “DOT” symbol certifies that the tire conforms to
applicable Federal Motor Vehicle Safety Standards.
Tire size
63ca01a
 The illustrations indicate typical tire sizes.
1Tire use (P=Passenger car, T=Temporary use)
2Section width (in millimeters)
3Aspect ratio (tire height to section width)
4Tire construction code
(R=Radial, D=Diagonal)
5Wheel diameter (in inches)
6Load index (2 digits or 3 digits)
7Speed symbol (alphabet with one letter)

CHASSIS
556
G63005
 1Section width
2Tire height
3Wheel diameter
Name of each section of tire
63sa14
 1Bead
2Sidewall
3Shoulder
4Tread
5Belt
6Inner liner
7Reinforcing rubber
8Carcass
9Rim lines
10Bead wires
11Chafer