manual radio set Lexus GS F 2020 Owner's Manuals

GS350_GS F_OM_OM30J07U_(U)
3996-3. Do-it-yourself maintenance
6
Maintenance and care
■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 th e radio wave signals is installed.
• If there is a lot of snow or ice on the vehi cle, particularly around the wheels or wheel
housings.
• If the tire inflation pressure is extr emely 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 that generates st rong 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 correctly 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 afte r adjusting the tire inflation pressure.
Also, make sure the tires are cold before carryi ng 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 in itialization again, 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 leve l when the tires are cold, 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 initializat ion procedure, the tire pressure warning light blinks for 1
minute then stays on after driving for 20 minutes.

589Alphabetical index
GS350_GS F_OM_OM30J07U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 266
Radiator .................................................... 389
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 329
Rear door sunshades .......................... 349
Rear personal lights............................. 338
Rear side marker lights ...................... 222 Light switch ........................................... 222
Replacing light bulbs ..........................421
Welcome light illumination control ......................... 144
Rear seat heaters.................................. 333
Rear sunshade ....................................... 349 Operation ..............................................349
Reverse operation feature............ 350 Rear turn signal lights ........................... 216
Replacing light bulbs ......................... 421
Turn signal lever ................................... 216
Rear view mirror Inside rear view mirror...................... 175
Outside rear view mirrors .............. 177
Rear view monitor system
*
Rear window defoggers .....................324
Refueling...................................................234 Capacity...................................................519
Fuel types.................................................519
Opening the fuel tank cap ............ 236
When the fuel filler door cannot be opened ..........................237
Remote Touch
*...................................... 312
Replacing Electronic key battery .........................411
Fuses .......................................................... 413
Light bulbs...............................................419
Tires .......................................................... 473
Rev indicator ..................................... 94, 101
Rev peak ............................................94, 102
Reporting safety defects for U.S. owners .................................. 560
Resetting the message indicating maintenance is required .................. 371
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.