2006 Lexus GS430 brake

MAINTENANCE
504
DOES YOUR VEHICLE NEEDREPAIRING?
Be on the alert for changes in performance and sounds, and
visual tip −offs that indicate service is needed. Some important
clues are:
 Engine missing, stumbling, or pinging
 Appreciable loss of power
 Strange engine noises
 A fluid leak under the vehicle (however, water dripping from
the air conditioning after use is normal.)
 Change in exhaust sound (This may indicate a dangerous
carbon monoxide leak. Drive with the windows open and
have the exhaust system checked immediately.)
 Flat−looking tires, excessive tire squeal when cornering,
uneven tire wear
 Vehicle pulls to one side when driving straight on a level
road
 Strange noises related to suspension movement
 Loss of brake effectiveness, spongy feeling brake pedal,
pedal almost touches floors, vehicle pulls to one side when
braking
 Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to your Lexus
dealer as soon as possible. It probably needs adjustment or
repair.
CAUTION
Do not continue driving with the vehicle unchecked. It
could result in serious vehicle damage and possibly
personal injury.

G61002
INTRODUCTION
510
ENGINE COMPARTMENT OVERVIEW (GS430)
1 Engine oil filler cap
2 Engine oil level
dipstick
3 Brake fluid reservoir
4 Fuse box
5 Washer fluid tank
6 Engine coolant
reservoir
7 Electric cooling fans
8 Condenser
9 Radiator
10 Fuse box
11 Battery

G61003
INTRODUCTION
511
ENGINE COMPARTMENT OVERVIEW (GS300)
1 Engine oil level
dipstick
2 Engine oil filler cap
3 Brake fluid reservoir
4 Fuse box
5 Washer fluid tank
6 Engine coolant
reservoir
7 Electric cooling fans
8 Condenser
9 Radiator
10 Fuse box
11 Battery

INTRODUCTION
515
POSITIONING THE JACK
G61006
Front
G61007
Rear
When jacking up your vehicle with the jack, position the
jack correctly as shown in the illustrations.
CAUTION
When jacking, be sure to observe the following to re-
duce the possibility of personal injury:
 Follow jacking instructions.
 Do not put any part of your body under the vehicle
supported by the jack. Personal injury may occur.
 Do not start or run the engine while your vehicle is
supported by the jack.
 Stop the vehicle on a level firm ground, firmly set the
parking brake and put the transmission in “P” posi-
tion.
 Make sure to set the jack properly in the jack point.
Raising the vehicle with jack improperly positioned
will damage the vehicle or may allow the vehicle to fall
off the jack and cause personal injury.
 Never get under the vehicle when the vehicle is sup-
ported by the jack alone; use vehicle support stands.
 Do not raise the vehicle with someone in the vehicle.
 When raising the vehicle, do not place any objects on
top of or underneath the jack.
NOTICE
Make sure to place the jack correctly, or your vehicle
may be damaged.

INTRODUCTION
516
PARTS AND TOOLS
Here is a list of parts and tools you will need to perform
do−it−yourself maintenance. Remember all Lexus parts are
designed in metric sizes, so your tools must be metric.
Checking the engine oil level
Parts (if level is low):
“Toyota Genuine Motor Oil” or equivalent
Oil grade: ILSAC multigrade engine oil. For recommended
oil viscosity, see page 533.
Tools:
 Rag or paper towel
 Funnel (only for adding oil)
Checking the engine coolant level
Parts (if level is low):
”Toyota Super Long Life Coolant” or similar high quality
ethylene glycol based non −silicate, non −amine, non −nitrite,
and non −borate coolant with long −life hybrid organic acid
technology.
“Toyota Super Long Life Coolant” is a mixture of 50%
coolant and 50% deionized water (for the U.S.A.) or 55% of
coolant and 45% deionized water (for Canada).
Tools:
 Funnel (only for adding coolant)
Checking brake fluid
Parts (if level is low):
FMVSS No. 116 DOT 3 or SAE J1703 brake fluid
Tools:
 Funnel (only for adding fluid)
Checking battery condition
Tools:
Warm water
 Baking soda
 Grease
 Conventional wrench (for terminal clamp bolts)
Checking and replacing the blade type fuses
Parts (if replacement is necessary):
Fuse with same amperage rating as original
Checking the cartridge type fuses
Parts (if replacement is necessary):
Genuine Lexus fuse or equivalent with same amperage
rating as original

SECTION 6 – 3
539
SERVICE PROCEDURES AND
SPECIFICATIONS
Chassis
Specifications (GS430)540
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications (GS300) 544
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking brake fluid 547
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
Checking tire inflation pressure 548
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire information 551
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
Run−flat tires 561
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . .
Types of tires 562
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . .
Rotating tires 563
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . .
Checking and replacing tires 563
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing snow tires and chains 567
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing wheels 569
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . .
Aluminum wheel precautions 570
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension and chassis 571
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHASSIS
541
– AUTOMATIC TRANSMISSION
Fluid capacity Drain and refill
1.7 L (1.5 qt., 1.8 lmp.qt.)
Fluid typeToyota Genuine ATF Type WS*
*Change automatic transmission fluid only as necessary.
Generally, it is necessary to change automatic transmission
fluid only if your vehicle is driven under one of the Special
Operating Conditions listed in your “Owner’s Manual
Supplement / Scheduled Maintenance”. When changing the
automatic transmission fluid, use only “Toyota Genuine ATF
Type WS” ( ATF JWS3324 or NWS9638) to aid in assuring
optimum transmission performance.NOTICE
Using automatic transmission fluid other than “Toyota
Genuine ATF T ype WS” may cause deterioration in shift
quality, locking up of your transmission accompanied
by vibration, and ultimately damage the automatic
transmission of your vehicle.
– BRAKES
Pedal clearance *
173 mm (2.9 in.) Min.
Pedal free play1.0 − 2.0 mm (0.04 − 0.08 in.)
Brake pad wear limit1.0 mm (0.04 in.)
Parking brake lining wear limit1.0 mm (0.04 in.)
Parking brake adjustment *25 − 7 clicks
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
*1Minimum pedal clearance when depressed with the force of 196 N (20 kgf,\
44 lbf.) with the engine running
*
2Parking brake adjustment when depressed with the force of 300 N (30.6 k\
gf, 67.4 lbf.)

CHASSIS
545
– BRAKES
Pedal clearance *
165 mm (2.6 in.) Min.
Pedal free play1.0 − 2.0 mm (0.04 − 0.08 in.)
Brake pad wear limit1.0 mm (0.04 in.)
Parking brake lining wear limit1.0 mm (0.04 in.)
Parking brake adjustment *25 − 7 clicks
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
*1Minimum pedal clearance when depressed with the force of 490 N (50 kgf,\
110 lbf.) with the engine running
*
2Parking brake adjustment when depressed with the force of 300 N (30.6 k\
gf, 67.4lbf.)
– STEERING
Free play
Less than 30 mm (1.2 in.)