2006 Lexus GS430 brakes

IN CASE OF AN EMERGENCY
468
IF YOUR ENGINE STALLS WHILEDRIVING
If your engine stalls while driving . . .
1. Reduce your speed gradually, keeping a straight line. Move
cautiously off the road to a safe place.
2. Turn on your emergency flashers.
3. Turn the engine switch off, and try starting the engine again.
If the engine will not start, see ”If your vehicle will not start”\
.
CAUTION
If the engine is not running, the power assist for the
brakes and steering will not work, so steering and
braking will be much harder than usual.
IF YOUR VEHICLE WILL NOT START
(a) Simple checks
Before making these checks, make sure you have followed the
correct starting procedure instructions in ”Operating the
engine switch” on page 348 and that you have sufficient fuel.
Since your vehicle is equipped with the engine immobilizer,
also check whether the other keys will start the engine. If they
work, your electronic key may be broken. Have the key
checked at your Lexus dealer. If none of your keys work, there
may be a malfunction in the engine immobilizer. Call your
Lexus dealer. See ”Keys” on page 8.
If the engine is not turning over or is turning over too
slowly
1. Check that the battery terminals are tight and clean.
2. If the battery terminals are O.K., switch on the interior light.
3. If the light is out, dim or goes out when the starter is cranked,
the battery is discharged. You may try jump starting. See ”(c)
Jump starting” for further instruction.
4. If the engine does not start even after the battery has been
recharged or replaced, see “(d) Starting the engine after a
battery discharge” on page 472.
If the light is O.K., but the engine still will not start, it needs
adjustment or repair. Call a Lexus dealer, Roadside
Assistance or Customer Service Assistance. (See
”Foreword”.)

IN CASE OF AN EMERGENCY
475
CAUTION
If the tire pressure warning light comes on, take
your vehicle to the nearest Lexus dealer or
authorized tire dealer as soon as possible,
observing the following instructions:
Decelerate as soon as possible to the most
appropriate speed that conditions permit. Do
not drive for longer than 160 km (100 miles) or
over 90 km/h (55 mph).
 Avoid abrupt steering wheel maneuvering and
braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the
brakes, causing death or serious injury.
 The warning system may not activate
immediately if bursts or sudden air leakage
should occur.
NOTICE
Do not use liquid sealants for a flat tire as tire
pressure warning valves and transmitters will
be damaged.
 Take due care not to go over a curb stone and
be careful of the holes in the road because
deflated tire pressure affects tire cushion
performance. The wheels, tires, body,
suspension and other components could be
damaged.
 Your ground clearance is reduced if the runflat
tire goes flat so avoid driving over obstacles
and drive slowly on rough, unpaved roads and
speed bumps. Also, do not attempt to go
through an automatic car wash as the vehicle
may get caught, resulting in damage.
 When the tires must be repaired and replaced,
have them repaired and replaced by your Lexus
dealer or an authorized tire dealer. The tire
pressure warning valves and transmitters will
be affected by the installation or removal of
tires.
 When the tires must be replaced, replace the
grommets for tire pressure warning valves and
transmitters as well.

IN CASE OF AN EMERGENCY
476
IF YOU HAVE A FLAT TIRE
(Vehicles with standard tires)
CAUTION
If the tire pressure warning light comes on,
observe the following instructions:
 Decelerate as soon as possible to the most
appropriate speed that conditions permit.
 Avoid abrupt steering wheel maneuvering and
braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the
brakes, causing death or serious injury.
 The warning system may not activate
immediately if bursts or sudden air leakage
should occur.
1. Reduce your speed gradually, keeping a straight line.
Move cautiously off the road to a safe place − well away
from the traffic. Avoid stopping on the center divider of
a highway. Park on a level spot with firm ground.
2. Stop the engine and turn on your emergency flashers.
3. Firmly set the parking brake and put the transmission
in ”P”.
4. Have everyone get out of the vehicle on the side away
from traffic. 5. Read the following instructions thoroughly.
CAUTION
When jacking, be
sure to observe the following to
reduce the possibility of personal injury:
 Follow jacking instructions.
 Do not put any part of your body under a vehicle
supported by a jack. Otherwise, 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”. Block the wheel diagonally opposite to
the one being changed if necessary.
 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
supported by the jack alone.

IN CASE OF AN EMERGENCY
493
A driver must be in the vehicle to steer it and operate the
brakes.
Towing in this manner may be done only on hard
−surfaced
roads for a short distance and at low speeds. Also, the wheels,
axles, drive train, steering and brakes must all be in good
condition.
CAUTION
Use extreme caution when towing the vehicle. Avoid
sudden starts or erratic driving maneuvers which would
place excessive stress on the emergency towing eyelet
and towing cable or chain. The eyelet and towing cable
or chain may break and cause serious injury or damage.
NOTICE
Use only a cable or chain specifically intended for use
in towing vehicles. Securely fasten the cable or chain
to the towing eyelet provided.
Before towing, release the parking brake and put the
transmission in ”N”. The engine switch must be selected in
“ACC” or “IG −ON” mode.
CAUTION
If the engine is not running, the power assist for the
brakes and steering will not work so steering and
braking will be much harder than usual.

MAINTENANCE
503
Accelerator pedal
Check
the pedal for smooth operation and uneven pedal ef fort
or catching.
Brake pedal
Check the pedal for smooth operation and the proper
clearance and free play. Check the brake booster function.
Brakes
In a safe place, check that the brakes do not pull to one side
when applied.
Parking brake
Check that the pedal has the proper travel and that, on a safe
incline, your vehicle is held securely with only the parking
brake applied.
Automatic transmission ”Park” mechanism
On a safe incline, check that your vehicle is held securely with
the selector lever in ”P” position and all brakes released.
Vehicle exterior
Items listed below should be performed from time to time,
unless otherwise specified.
Wheel nuts
When checking the tires, make sure to check the nuts for
looseness. Tighten them if necessary. Fluid leaks
Check
underneath for leaking fuel, oil, water or other fluid after
the vehicle has been parked for a while. If you smell fuel fumes
or notice any leak, have the cause found and corrected
immediately.
Doors and engine hood
Check that all doors, including trunk lid, operate smoothly and
all latches lock securely. Make sure the engine hood
secondary latch secures the hood when the primary latch is
released.
Tire inflation pressure
Check the tire inflation pressure with a gauge every two
weeks, or at least once a month and adjust as shown on
the tire and loading information label. See page 548 for
additional information.
Tire surface
Check the tires carefully for cuts, damage or excessive
wear. See page 563 for additional information.
Tire rotation
Rotate the tires according to the maintenance schedule.
(For scheduled maintenance information, please refer to
the “Owner’s Manual Supplement / Scheduled
Maintenance”.) See page 563 for additional information.

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.)

CHASSIS
558
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressuretire pressure when the vehicle has been parked for at least 3 hours or m\
ore, or it
has not been driven more than 1.5 km or 1 mile under that condition
Maximum inflation
pressurethe maximum cold inflation pressure to which a tire may be inflated and \
it is shown
on the sidewall of the tire
Recommended inflation
pressurecold tire inflation pressure recommended by a manufacturer
Accessory weight
the combined weight (in excess of those standard items which may be rep\
laced) of
automatic transmission, power steering, power brakes, power windows, pow\
er
seats, radio, and heater, to the extent that these items are available as
factory−installed equipment (whether installed or not)
Curb weight
the weight of a motor vehicle with standard equipment including the maxi\
mum
capacity of fuel, oil, and coolant, and, if so equipped, air conditionin\
g and
additional weight optional engine
Maximum loaded vehicle
weight
the sum of —
(a) curb weight;
(b) accessory weight;
(c) vehicle capacity weight; and
(d) production options weight