418
GS350_200t_GS F_OM_OM30E86U_(U)6-3. Do-it-yourself maintenance
■Situations in which the tire pressure warning system may not operate properly
●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 extremely higher than the specified level.
• If wheel without the tire pressure warning valve and transmitter are used.
• If the ID code on the tire pressure warning valves and transmitters is not registered 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, air- port or other facility th at generates strong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless
communication device
If tire position information is not correctl y displayed due to the radio wave conditions,
the display may be corrected by driving and changing the radio wave conditions.
●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.
■The initialization operation
●Make sure to carry out initialization af ter adjusting the tire inflation pressure.
Also, make sure the tires are cold before carry ing out initialization or tire inflation pres-
sure adjustment.
●If you have accidentally turned the engine swit ch off during initialization, it is not neces-
sary to manually restart the initialization agai n, as initialization will restart automatically
the next time the engine switch is turned to IGNITION ON mode.
●If you accidentally perform initialization when initialization is not necessary, adjust the
tire inflation pressure to the specified level when the tires are co ld, and conduct initial-
ization again.
■When initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases, the set-
tings have not been recorded and the system will not operate properly. If repeated
attempts to record tire inflation pressure settings are unsuccessful, have the vehicle
inspected by your Lexus dealer.
●The initialization message is not displayed on the multi-information display when per-
forming initialization.
●After carrying out the initialization procedure, the tire pressure warning light blinks for 1
minute then stays on after driving for 20 minutes.
615Alphabetical index
GS350_200t_GS F_OM_OM30E86U_(U)
Radar cruise control (dynamic radar cruise control) ........................ 278
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 266
Radiator ....................................................408
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 339
Rear door sunshades ............................361
Rear personal lights............................. 348
Rear side marker lights ........................215 Light switch ............................................ 215
Replacing light bulbs ........................439
Welcome light illumination control ......................... 138
Rear seat heaters.................................. 343
Rear sunshade .........................................361 Operation ............................................... 361
Reverse operation feature.............362 Rear turn signal lights ......................... 209
Replacing light bulbs ....................... 439
Turn signal lever ................................. 209
Rear view mirror Inside rear view mirror......................169
Outside rear view mirrors ................171
Rear view monitor system
*
Rear window defoggers .................... 334
Refueling................................................... 227 Capacity ...................................................541
Fuel types.................................................541
Opening the fuel tank cap ............ 228
When the fuel filler door cannot be opened ......................... 229
Remote Touch
*.....................................322
Replacing Electronic key battery ..................... 429
Fuses .......................................................... 431
Light bulbs............................................. 437
Tires ............................................................491
Rev indicator .....................................88, 95
Rev peak ............................................. 88, 96
Reporting safety defects for U.S. owners .................................. 586
Resetting the message indicating maintenance is required ................ 386
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
