2007 LEXUS LX470 spare wheel

5
When trouble arises
343
5-2. Steps to take in an emergency
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch does not turn off the tire pressure warning light.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural
air leaks or tire inflation pressure changes caused by temperature. In this case,
adjusting the tire inflation pressure will turn off the warning light.
■If the tire pressure warning system is inoperative
The tire pressure warning system may become inoperative in the following condi-
tions:
(When the condition becomes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmitters are used.
●If the ID code on the tire pressure warning valves and transmitters is not regis-
tered.
●If electronic devices or facilities using similar radio wave frequencies are nearby.
●If a radio set at similar frequencies is in use in the vehicle.
●If a window tint that affects the radio wave signals is installed.
●If the tire pressure warning select switch is set to a different tire setting.
●If there is a lot of snow or ice on the vehicle, in particular around the wheels or
wheel housings.
●If non-genuine Lexus wheels are used.
●If tire chains are used.
●If the spare tire is in a location subject to poor radio wave signal reception.
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or higher.
■If the tire pressure warning light blinks
If the tire pressure warning light blinks when the ignition key is turned to the “ON”
position, have it checked by your Lexus dealer.
■Changing the engine oil (U.S.A. only)
Make sure to reset oil change system

344
5-2. Steps to take in an emergency
CAUTION
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury.• Stop your vehicle in a safe place as soon as possible. Adjust the tire inflationpressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure
adjustment, it is probable that you have a flat tire. Check the tires. If the tire is
flat, change to the spare tire and have the flat tire repaired by the nearest
Lexus dealer.
• Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if provided ), should be checked monthly when cold
and inflated to the inflation pressure re commended by the vehicle manufacturer on
the vehicle placard or tire inflation pressu re label (tire and load information label).
(If your vehicle has tires of a different size than the size indicated on the vehicle
placard or tire inflation pressure label [tire and load information label], you should
determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicl e has been equipped with a tire pressure
monitoring system (TPMS-tire pressure warning system) that illuminates a low tire
pressure telltale (tire pressure warning light) when one or more of your tires is sig-
nificantly under-inflated. Accordingly, when the low tire pressure telltale (tire pres-
sure warning light) illuminates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for
proper tire maintenance, and it is the driv er's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the level to trigger illumination of
the TPMS low tire pressure telltale (tire pressure warning light).

352
5-2. Steps to take in an emergency
Installing the spare tireRemove 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 nut by hand to
approximately the same amount.
Lower the vehicle.
STEP1
STEP2
STEP3

5
When trouble arises
353
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:
97 ft•lbf (131 N•m, 13.4 kgf•m)
Reinstall the wheel ornament.
Stowing the flat/spare tire, jack and toolsLay down the tire with the ou ter side facing up, and install the
holding bracket.
Raise the tire.
Stow the tools and jack securely.
STEP4
STEP5
STEP1
STEP2
STEP3

5
When trouble arises
355
5-2. Steps to take in an emergency
CAUTION
■Replacing a flat tire
Observe the following precautions to reduce the risk of injury.
●Lower the spare tire completely to the ground before removing it from under the
vehicle.
●Do not try to remove the wheel ornament by hand. Take due care in handling the
ornament to avoid unexpected personal 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.
Remove any oil or grease on the wheel bolts or wheel nuts.
●Have the wheel nuts tightened with a torque wrench to 97 ft•lbf (131 N•m, 13.4
kgf•m) as soon as possible after changing wheels.
Failure to follow these precautions could cause the nuts to loosen and the wheels
may fall off, which could lead to an accident causing death or serious injury.
●Do not attach a heavily damaged wheel orna ment, as it may fly off the wheel while
the vehicle is moving.

376
6-1. Specifications
Tires and wheels
Ti r e s i z eP275/60R18 111H
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Normal driving
Front tires:
29 psi (200 kPa, 2.0 kgf/cm
2 or bar)
Rear tires:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Spare tire:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Trailer towing Front tires:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Rear tires:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spare tire:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Wheel size18  8 J
Wheel nut torque97 ft•lbf (131 N•m, 13.4 kgf•m)

403
Alphabetical index
ReplacingFuses ............................................................311
Light bulbs ............................................ 320
Tires .......................................................... 346
Wireless remote control battery.................................................. 309
Reporting safety defects for U.S.A. owners .................................... 396
Roll sensing of curtain shield airbags off switch ..................................65
Roof luggage carrier ..............................34
Running board lights............................. 212
Seat belts Adjusting the seat belt ........................25
Automatic Locking Retractor (ALR) .......................................................26
Child restraint system installation ..............................................75
Cleaning and maintaining the seat belts..................................... 263
Emergency Locking Retractor (ELR) ........................................................26
How to wear your seat belt..............24
How your child should wear the seat belt........................................... 27
Pregnant women, proper seat belt use.......................... 27
Reminder light..................................... 340
Seat belt extenders .............................. 28
Seat belt pretensioners.......................26
Seat heaters............................................ 230
Seating capacity .....................................155
Seats Child seats/child restraint system installation ..............................75 Cleaning ................................................. 262
Driving position memory .................... 21
Front seat adjustment ........................... 12
Front seat adjustment
precautions.............................................13
Head restraint ......................................... 23
Properly sitting in the seat ................ 52
Rear seat adjustment.............................14
Rear seat adjustment precautions........................................... 20
Seat heaters ..........................................230
Service reminder indicators ............. 107
Shift lever Automatic transmission .....................98
If the shift lever cannot be shifted from P .................................. 358
Side airbags................................................ 54
Side marker lights Switch.......................................................... 112
Wattage .................................................. 377
Side mirror Adjusting and folding.......................... 32
Driving position memory .................... 21
Spare tire Inflation pressure ................................302
Spare tire ................................................346
Spark plug................................................ 372
Specifications .........................................368
Speedometer .......................................... 104
Steering Column lock release...........................96
Fluid.......................................................... 286
Steering wheel Adjustment ...............................................30
Audio switches................................... 206
Driving position memory .................... 21
S