
5616-3. Do-it-yourself maintenance
6
Maintenance and care
LS460/LS460L_GE (OM50G06E)
■If the tread on snow tires wears down below 4 mm (0.16 in.)
The effectiveness of the tires as snow tires is lost.
■Situations in which the tire pressure warning system may not operate properly
(vehicles with the tire pressure warning system)
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or
wheel housings.
• If the tire inflation pressure is extr emely higher than the specified level.
• If the spare tire is in a location subject to poor radio wave signal reception.
• If a large metallic object which can interfere with signal reception is put in the
trunk.
• 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 in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display,
airport or other facility th at generates strong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wire-
less communication device
If tire position information is not correctly displayed due to the radio wave condi-
tions, the display may be corrected by driving and changing the radio wave condi-
tions.
●When the vehicle is parked, the time taken for the warning to start or go off could
be extended.
●When tire inflation pressure declines rapidly for example when a tire has burst, the
warning may not function.

6137-2. Steps to take in an emergency
7
When trouble arises
LS460/LS460L_GE (OM50G06E)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on (vehicles with the tire pressure warn-
ing system)
Be sure to observe the following precautions. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●As the tire inflation pressure may be low when this warning light is illuminated,
stop your vehicle in a safe place as soon as possible and adjust the tire inflation
pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change
it with 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 (vehicles with the tire pressure
warning system)
The tire pressure warning system may not activate immediately.
NOTICE
■To ensure the tire pressure warning system operates properly (vehicles with the
tire pressure warning system)
Do not install tires with different specifications or makers, as the tire pressure warn-
ing system may not operate properly.

6187-2. Steps to take in an emergency
LS460/LS460L_GE (OM50G06E)
●Stop the vehicle in a safe place on a hard, flat surface.
●Set the parking brake.
●Shift the shift lever to P.
●Stop the engine.
●Turn on the emergency flashers. ( P. 594)
If you have a flat tire
Your vehicle is equipped with a spare tire. The flat tire can be replaced
with the spare tire.
For details about tires: P. 556
CAUTION
■If you have a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair, which could result in an accident.
Before jacking up the vehicle

6197-2. Steps to take in an emergency
7
When trouble arises
LS460/LS460L_GE (OM50G06E)
Location of the spare tire, jack and tools
Parking brake release tool
Jack handle
Wheel nut wrench
Jack
Tools
Screwdriver
Spare tire
Towing eyelet
1
2
3
4
5
6
7
8

6227-2. Steps to take in an emergency
LS460/LS460L_GE (OM50G06E)
Lift up the luggage mat and secure it by using the hook provided.
( P. 466)
Loosen the center fastener that
secures the spare tire.
If the center fastener cannot be turned
by hand, use the wheel nut wrench
that is stored in the trunk. (To secure
the tire, tighten the center fastener by
hand. Do not use the wrench or other
tools.)
Chock the tires.
Taking out the spare tire
1
2
CAUTION
■When storing the spare tire
Be careful not to catch fingers or other body parts between the spare tire and the
body of the vehicle.
Replacing a flat tire
1
Flat tireWheel chock positions
FrontLeft-hand sideBehind the rear right-hand side tire
Right-hand sideBehind the rear left-hand side tire
RearLeft-hand sideIn front of the front right-hand side tire
Right-hand sideIn front of the front left-hand side tire

6257-2. Steps to take in an emergency
7
When trouble arises
LS460/LS460L_GE (OM50G06E)
Remove any dirt or foreign mat-
ter from the wheel contact sur-
face.
If foreign matter is on the wheel con-
tact surface, the wheel nuts may
loosen while the vehicle is in motion,
causing the tire to come off.
Install the spare tire and loosely
tighten each wheel nut by hand
by approximately the same
amount.
Turn the wheel nuts until the washers
come into contact with the disc wheel.
Lower the vehicle.
Firmly tighten each wheel nut two
or three times in the order shown
in the illustration.
Tightening torque:
140 N•m (14.3 kgf•m, 103 ft•lbf)
Installing the spare tire
1
Disc wheel
Washer
2
3
4

702Alphabetical index
LS460/LS460L_GE (OM50G06E)
Sensor
Adaptive High-beam System
(AHS)................................................... 297
Automatic headlight system........ 288
Camera sensors................................... 371
Driver monitor sensor ....................... 371
Inside rear view mirror...................... 231
Intrusion sensor and tilt sensor ...... 115
Lexus night view................................ 398
LKA (Lane-Keeping Assist) ......... 344
Radar sensor ... 322, 338, 370, 386
Rain-sensing windshield
wipers...................................................302
Shift lever.......................................264, 269
Automatic transmission ......264, 269
If the shift lever cannot
be shifted from P ................ 267, 275
Shift lever light........................................ 447
Shift lock system ......................... 267, 275
Shopping bag hooks............................ 465
Side airbags................................................ 52
Side mirrors............................................. 232
Adjusting and folding....................... 232
BSM (Blind Spot Monitor) ............ 381
Linked mirror function when
reversing ............................................. 234
Mirror position memory.................. 218
Side turn signal lights .......................... 278
Replacing light bulbs .......................590
Turn signal lever................................. 278
Smart entry & start system .................153
Antenna location ................................. 156
Entry functions ...................................... 153
Starting the engine............................ 259
Snow mode .................................. 266, 274
Snow tires ................................................ 402
Spare tire .................................................. 618
Inflation pressure ...................660, 662
Storage location................................... 619
Spark plug ............................................... 656
Specifications ......................................... 648
Speedometer ...........................................125
Sport mode ............................................. 354
Steering lock ............................................261
Column lock release ......................... 261
Steering wheel....................................... 228
Adjustment ........................................... 228
Heated steering wheel ................... 476
Power easy access system............. 201
Steering wheel position
memory ................................................ 218
Stop lights
Emergency brake signal.................. 361
Replacing light bulbs .......................590
Storage feature .......................................451