phone Lexus GS350 2020 User Guide

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.

584Alphabetical index
GS350_GS F_OM_OM30J07U_(U)
Fuel filler door ........................................ 234When the fuel filler door cannot be opened ......................... 237
Fuel pump shut off system................. 434
Fuses ............................................................413
Garage door opener .......................... 353
Gauges ................................................92, 98
Glove box ..................................................341
Glove box light ........................................341
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ......................................... 171
Headlights ............................................... 222 Adaptive Front-lighting System (AFS) ................................... 223
Automatic High Beam system .... 225
Headlight leveling warning message ........................... 442
Light switch ........................................... 222
Replacing light bulbs ..........................421
Headlights aim ............................... 417, 571
Head-up display......................................126
Heated steering wheel ....................... 332 Heaters
Air conditioning system .................. 318
Heated steering wheel ................... 332
Seat heaters .......................................... 333
Outside rear view mirrors ............ 324
Hill-start assist control ........................ 297
Hood ......................................................... 378 Open ....................................................... 378
Warning message............................. 442
Hooks Cargo hooks ....................................... 344
Coat hooks ........................................... 352
Retaining hooks (floor mat)..............32
Horn............................................................. 174
I/M test ......................................................375
Identification............................................. 517 Engine ...................................................... 518
Vehicle ...................................................... 517
Ignition switch (engine switch) ....... 203 Auto power off function .................205
Changing the engine switch modes .................................................. 204
If your vehicle has to be stopped in an emergency.......... 425
Starting the engine ............................ 204
Illuminated entry system ................... 339
Immobilizer system ................................. 77
Indicators .....................................................87
G
H
I

592Alphabetical index
GS350_GS F_OM_OM30J07U_(U)
SwitchesASC (Active Sound Control) switch...................................................... 221
Audio remote control switches
*
Automatic High Beam switch ..... 225
Brake Hold............................................. 219
Cruise control switch........................................266, 278
Door lock switches ............................ 145
Driving mode select switch ........... 281
Driving position memory switches ................................................ 166
Emergency flashers switch ........... 424
Engine switch ...................................... 203
Garage door opener switches .............................................. 353
Heated steering wheel switch.................................................... 332
HUD (Head-up display) switches ................................................ 126
Ignition switch ..................................... 203
Intuitive parking assist
*
Light switch ........................................... 222
LKA (Lane-Keeping Assist) switch................................................... 260
Meter control switches ........... 107, 115
Moon roof switches........................... 184
Outside rear view mirror switches ................................................. 177 Paddle shift switches..........................210
Parking brake switches .................... 217
Power door lock switch ...................145
Power window switches ................... 181
Rear sunshade switch ..................... 349
Rear window and outside
rear view mirror defoggers
switch ................................................... 324
Seat heater switches ........................ 333
Seat ventilator switches .................. 333
Snow mode switch ........................... 209
“SOS” button ........................................... 72
Talk switch
*
Telephone switches*
Tilt and telescopic steering control switch .................. 174
Tire pressure warning reset switch ................................................... 396
Trunk closer switch............................ 150
Trunk opener switch ..........................149
Trunk opener main switch ............... 151
TVD (Torque Vectoring Differential) switch ......................... 295
Vehicle-to-vehicle distance switch ....................................................272
VSC OFF switch ............................... 299
Window lock switch ........................... 181
Windshield wipers and washer switch ......................... 229

593Alphabetical index
GS350_GS F_OM_OM30J07U_(U)
Tachometer .....................................93, 100Variable red zone............................... 103
Tail lights................................................... 222 Light switch ........................................... 222
Replacing light bulbs ..........................421
Welcome light illumination control ................................................... 144
Talk switch
*
Telephone switches*
Theft deterrent system Alarm........................................................... 79
Engine immobilizer system.............. 77
Tire inflation pressure ......................... 525 Maintenance data ............................. 525
Tire inflation pressure display function ............................................... 395
Warning light ....................................... 437
Warning message ............................. 442
Tire information ..................................... 532 Glossary .................................................537
Size ............................................................534
Tire identification number..............534
Uniform Tire Quality Grading.............................................. 536
Tire pressure warning system ......... 395 Function ................................................. 395
Initializing............................................... 396
Installing tire pressure warning valves and transmitters ............... 395
Registering ID codes .......................397
Warning light ....................................... 437
Warning message ............................. 442 Tires ........................................................... 394
Chains ..................................................... 307
Checking ............................................... 394
Emergency tire puncture repair kit .............................................. 484
If you have a flat tire .............. 473, 484
Inflation pressure................................ 525
Information............................................ 532
Replacing ............................................... 473
Rotating tires ........................................395
Size ........................................................... 525
Snow tires ..............................................309
Spare tire................................................ 473
Tire inflation pressure display function................................................395
Tire pressure warning system .....395
Warning light ....................................... 437
Warning message............................. 442
Tools ........................................................... 474
Top tether strap ....................................... 68
Torque Vectoring Differential (TVD) ..................................................... 295
Total load capacity............................... 200
Towing Dinghy towing ..................................... 202
Emergency towing ............................427
Towing eyelet ...................................... 429
Trailer towing.........................................201
TRAC (Traction Control) Function .................................................. 297
TRAC OFF switch ............................ 299
T
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.