spare tire LEXUS LS430 2006 Owners Manual

278
4-3. Do-it-yourself maintenance
Tires
Replace the tires when the tread wear indicators show.
■Checking tires
New tread
Tread wear indicator
Worn tread
The location of tread wear indica-
tors is shown by the “TWI” or “
”
marks, etc., molded on the sidewall
of each tire.
■ Tire rotation
Use the spare tire and rotate the tires
in the order shown.
Lexus recommends tire rotation
per the maintenanc
e schedule to
equalize tire wear and extend tire
life.
1
2
3
Front

285
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Tire inflation pressure check interval
You should check the tire inflation pressur
e every two weeks, or at least once a
month. 
Do not forget the spare. The inflation pressure for the spare tire should be the same
as
that for the standard tire. ( P.364 )
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
•Wasting fuel
• Reducing driving comfort and tire life
• Making your vehicle less safe to drive
If a tire needs frequent refilling, have it checked by your Lexus dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observing the following;
• Check only when the tires are cold. 
If your vehicle has been parked for at least 3 hours and has not been driven for
mor
e than 1 mile or 1.5 km since, you will get an accurate cold tire inflation pres -
sure reading.
• Always use a tire pressure gauge. 
The appearance of the tire can be misleadi n
g. In addition, tire inflation pressures
that are even just a few pounds off can degrade ride and handling.
• Do not bleed or reduce tire inflation pressure after driving. 
It is normal for the tire inflation pressure to be higher after driving.
• Never exceed the vehicle weight capacity. 
Passengers and luggage weight should be pla
ced so that the vehicle is bal-
anced.

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

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.

397
Alphabetical index
ReplacingAir conditioning filter ....................... 289
Blade type fuses ................................. 298
Cartridge type fuses ........................ 309
Light bulbs .............................................. 313
Wireless remote control 
battery.................................................. 295
Seat belts Adjusting the belt .................................. 34
Automatic Locking
Retractor (ALR) .................................... 36
Child restraint system 
installation .............................................. 73
Cleaning ................................................ 248
Emergency Locking 
Retractor (ELR) ................................. 36
How to wear your seat belt.............. 34
How your child should 
wear the seat belt............................... 37
Pregnant women, 
proper seat belt use.......................... 37
Reminder light....................................... 331
Seat belt extenders .............................. 38
Seat belt pretensioners...................... 36
Seat heaters.............................................. 218
Seats Cleaning ................................................ 248
Child seats/child restraint 
system installation ..............................76
Driving position memory .................. 25
Head restraint .......................................... 31
Properly sitting in the seat................ 58
Rear seat position memory .............. 29
Refleshing rear seat switches ....... 222Seat adjustment .....................................
22
Seat adjustment precautions........... 24
Seat heaters ........................................... 218
Ventilated seats .................................. 220
Selector lever ............................................ 98
Automatic transmission .................... 98
If you cannot shift selector 
lever.......................................................354
Service reminder indicators.............. 105
Shift lock system .................................... 354
Side airbags.................................................. 61
Side marker lights Switch.......................................................... 110
Wattage .................................................. 372
Side mirror.................................................. 43
Adjusting and folding.......................... 43
Driving position memory .................. 25
Smart access system Smart access system .............................. 5
Warning messages........................... 334
Snow tires.................................................... 151
Spare tire .................................................. 347
Spark plug................................................ 367
Specifications ......................................... 364
Speedometer .......................................... 103
SRS airbag SRS airbags.............................................. 60
Warning light ....................................... 334
Steering wheel Adjusting ................................................... 40
Audio switches..................................... 195
Driving position memory .................. 25
Stop lights Wattage .................................................. 372
Stuck If your vehicle becomes stuck ...... 361
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