tire LEXUS LS430 2006 Owner's Guide

5
When trouble arises
335
5-2. Steps to take in an emergency
Have the vehicle inspected by your Lexus dealer immediately.
Failing to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Lexus dealer immediately.
Warning message and
lightDetails
(flashes)
Brake wear warning
Indicates that your brake pads have worn down
enough to require replacement.
and
VSC and TRAC warning
Indicates a malfunction in the vehicle stability
control system or the traction control system.
These systems do not work while the warning
message is displayed, however, it is no problem
to continue normal driving.
Tire pressure warning system failure warning
Indicates a malfunction in the tire pressure
w
arning system. The system does not work
while the warning message is displayed, how -
ever, it is no problem to continue normal driving.
(flashes)
Steering lock cable failure warning
Indicates that the interlock cable for the steer -
ing lock is faulty.

338
5-2. Steps to take in an emergency
Warning message and lightDetailsCorrection procedures
(flashes)
Open moon roof warn-
ing
If the driver's door is
opened with the igni-
tion switch turned off
and the moon roof is
opened.
Close the moon roof
when you leave your
vehicle.
Parking brake warning
(Warning buzzer)*1
Indicates that the
parking brake is not
released.Release the parking
brake.
Low tire pressure
warning
Tire inflation pressure
is low.Adjust the tire inflation to
the specified pressure.
Low washer fluid warn -
ing
Washer fluid level is
low.Fill the washer fluid tank.
Air conditioning filter
warning
Indicates that the air
conditioning filter is
clogged enough to
require replacement.Change the air condi-
tioning filter.

342
5-2. Steps to take in an emergency
■Resetting the tire pressure warning data
After adjusting the tire inflation pressur
e, be sure to initialize the data. (P. 2 7 9 )
If the message remains on, the system may have malfunctioned. Have the vehicle
inspected b
y your Lexus dealer as soon as possible
■The tire pressure warning system may not function properly in the following con -
ditions
●Tires other than the sp ecified sizes are used, or if tires of different sizes or tread
pattern are mixed, or the degree of tread wear is very different among the
installed tires.
●A compact spare tire, snow tires, or tire chains are used.
●The tire inflation pressure is excessively higher than specified, or tire inflation
pressure suddenly drops due to buresting or other causes.
●Driving on slippery road surfaces such as rough or frozen roads.
●Driving under 19 mph (30 km/h) or above 62 mph (100 km/h), or less than 5
minutes drive.
●Initialization was not performed correctly after replacing or rotating tires or
wheels.
●The outside temperature is below 32 °F (0 °C) or above 104 °F(40 °C).
CAUTION
■When the low tire pressure warning message appears
Avoid abrupt maneuvering and braking. If th
e vehicle’s tires have deteriorated, you
could lose control of the vehicle, resulting in death or serious injury.

5
When trouble arises
347
5-2. Steps to take in an emergency
If you have a flat tire
Remove the flat tire and replace it with the spare provided.
■Before jacking the vehicle
●Stop the vehicle on a hard, flat surface.
●Set the parking brake.
●Set the transmission selector lever in P.
●Stop the engine.
●Turn on the emergency flashers.
■ Location of spar
e tire jack and jacking position
Tire jack position Spare tire
Tire jack
Tool box Jack handle

348
5-2. Steps to take in an emergency
Replacing a flat tire
Chock the tires.
Slightly loosen the wheel nuts (one
turn).
Wheel
chocks
Flat tireWheel chock positions
Front tire
Left-
hand
sideBehind the rear
right-hand side
tire
Right-
hand
sideBehind the rear
left-hand side tire
Rear tire
Left-
hand
sideIn front of the
front right-hand
side tire
Right-
hand
sideIn front of the
front left-hand
side tire
Wheel nut 
wrench

5
When trouble arises
349
5-2. Steps to take in an emergency
Turn the tire jack joint “A” by hand
until the jack is in contact with the
jack point.
Raise the vehicle until the tire is
slightly r
aised off the ground.
Remove all the wheel nuts and the
tir
e.
When resting the tire on the
gr
ound, place the tire so that the
wheel design faces up to avoid
scratching the wheel surface.
A
Tire Jack
Ti r e J a c k 
position
Jack point
Ti r e J a c k 
handle

350
5-2. Steps to take in an emergency
Installing spare tire
Remove any dirt or foreign matter
from the wheel contact surface.
If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is in
motion, and the tire may come off
the vehicle.
Install the spare tire and loosely tighten each wheel nut by hand to
approximately the same amount.
Turn the lug nuts until the washers
come into contact with the wheel.
Lower the vehicle.
Wheel nut
Wa s h e r
Disc wheel

5
When trouble arises
351
5-2. Steps to take in an emergency
Firmly tighten each nut two or
three times in the order shown in
the illustration.Tightening torque: 
76 f t
•lbf (105 N•m, 10.5 kgf•m)
Place the center ornament from the removed tire on the tire
installed on the vehicle.
Center ornaments cannot be installed on the spare tire.
Stow the flat tire, tire jack and all
tools.
Check the following when stowing
the tire jack and tire. • The tire jack should be firmly secur
ed in the carrier.
• The tire should be secured with the
bolt.

352
5-2. Steps to take in an emergency
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or injuries due to the vehicle sud-
denly falling off the jack. 
Observe the following precautions to prevent accidents.
• Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
• Only use the tire jack that comes with this vehicle for replacing a flat tire. 
Do not use this tire jack on other vehicl
es, and do not use other tire jacks for
replacing tires on this vehicle.
• Always check that the tire jack is securely set to the jack point.
• Do not raise the vehicle while someone is in it.
• When raising the vehicle, do not put an object on or under the jack.
• Do not raise the vehicle to a height greate r than
that required to replace the tire.
• Do not put any part of your body under the vehicle supported by a jack.
• Do not start or run the engine while your vehicle is supported by the jack.
• Use a jack stand if it is necessary to get under the vehicle.
• Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Replacing a flat tire
Observe the following precautions to reduce
the risk of death or serious injury.
• Never use oil or grease on the wheel bolts or wheel nuts. 
The oil or grease can cause the wheel nuts to loosen, causing a serious accident.
R
emove any oil or grease on the wheel bolts or wheel nuts.
• Have the wheel nuts tightene d with a tor
que wrench to 76 f t•lbf (105 N•m, 10.5
kgf
•m) as soon as possible after changing wheels. 
Failure to follow these pre-cautions could cause, the wheel nuts to loosen and the
w
heels may fall off, which could lead to an accident causing death or serious injury.
NOTICE
■Do not drive the vehicle with a flat tire.
Do not continue driving with a flat tire. 
Driving even a short distance can damage a tire and wheel beyond repair.

5
When trouble arises
361
5-2. Steps to take in an emergency
If the vehicle becomes stuck
CAUTION
■When removing the stuck vehicle
If you choose to rock the vehicle back and forth to free it, make sure the surround-
ing area is clear, to avoid striking other vehicles, objects or persons. The vehicle
may
also lunge forward or lunge back suddenly as it becomes free, use extreme
caution.
NOTICE
■To avoid damaging the transmission and other components
●Do not operate the selector lever while depressing the accelerator pedal.
●Avoid spinning the wheels and do not rev the engine.
●If the vehicle remains stuck after trying these procedures the vehicle may require
towing to be freed.
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt, or snow to the extent that it cannot move.
• Stop the engine. Set the parking brake and put the transmission
selector lever in “P”.
• Remove the mud, snow, or sand from around the stuck tire.
• Place wood, stones or some other ma terial to help pr
ovide traction
under the tires.
• Restart the engine.
• Turn off the traction control system. ( P.141)
• Carefully apply the accelerator to free the vehicle.