2015 Lexus GS450h phone

GS450h_OM_OM30F70U_(U)
4496-3. Do-it-yourself maintenance
6
Maintenance and care
■If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is lost.
■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.
• Lock nuts 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.
●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 that generates strong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wire- less communication device
Vehicles with the tire inflation pressure display function: If tire position information
is not correctly disp layed 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 rapi dly for example when a tire has burst, the
warning may not function.
■The initialization operation
●Make sure to carry out initialization after adjusting the tire inflation pressure.
Also, make sure the tires are cold before carrying out initialization or tire inflation
pressure adjustment.
●If you have accidentally turned the power switch off during initialization, it is not
necessary to press the reset switch again as initialization will restart automatically
when the power switch has been turn ed to ON mode for the next time.
●If you accidentally press the reset switch when initialization is not necessary, adjust
the tire inflation pressure to the specified level when the tires are cold, and conduct
initialization again.

640Alphabetical index
GS450h_OM_OM30F70U_(U)
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ....................................... 158
Headlights ................................................. 217 Adaptive Front-lighting System (AFS) .................................... 219
Discharge headlights precautions ......................................... 491
Headlight leveling warning message ............................ 516
Light switch ............................................. 217
Replacing light bulbs ....................... 489
Wattage ................................................. 583
Headlights aim ............................ 477, 624
Head-up display..................................... 104
Heaters Air conditioning system ................. 335
Heated steering wheel ................... 380
Seat heaters ......................................... 382
Outside rear view mirrors ............ 360
High-voltage components ...................76
Hood .......................................................... 426 Open ........................................................426
Warning message ............................ 520
Hooks Cargo hooks ........................................ 373
Coat hooks .......................................... 390
Luggage hook ..................................... 373
Retaining hooks (floor mat) ............. 28
Utility hook ............................................392 Horn............................................................. 216
Hybrid battery (traction battery) ....... 76
Hybrid battery (traction battery)
air vents ..................................................... 77
Hybrid system............................................ 72 Emergency shut off system .............. 77
Energy monitor/consumption screen.......................... 111
EV drive mode ...................................200
High voltage components ................76
Hybrid System Indicator ................... 94
Hybrid system precautions ..............76
Hybrid vehicle driving tips ..............316
If the hybrid system will not start .......................................554
Overheating.........................................566
Power (ignition) switch.....................193
Starting the hybrid system...............193
Vehicle proximity notification system ......................................................73
Hybrid System Indicator .......................94
Hybrid transmission ............................ 203 If the shift lever cannot be shifted from P ............556
Paddle shift switches........................205
S mode.................................................... 206
H

648Alphabetical index
GS450h_OM_OM30F70U_(U)
SwitchesAFS OFF switch .................................. 219
Audio remote control switches
*
Brake hold switch ................................214
BSM (Blind spot monitor) switch................................................... 300
Cruise control switch...........235, 239
“DISP” button .......................................... 97
Door lock switches ............................ 139
Driving mode select switch ......... 280
Driving position memory switches ................................................ 152
Emergency flashers switch ...........494
EV drive mode switch .................... 200
Fog light switch ................................... 222
Garage door opener switches ...............................................393
Heated steering wheel switch................................................... 380
HUD (Head-up display) switches ................................................ 104
Ignition switch ....................................... 193
Intuitive parking assist
*
Lexus night view switch ................... 310
Light switch ............................................. 217
LKA (Lane-Keeping Assist) switch.................................................... 272
Moon roof switches............................. 171
Outside rear view mirror switches ................................................ 164
Paddle shift switches ....................... 205
Parking brake switches...................... 211 PCS OFF switch ................................ 292
Power door lock switch ...................139
Power switch .........................................193
Power window switches .................. 167
Rear sunshade switch ..................... 387
Rear window and outside
rear view mirror defoggers
switch ...................................................360
Seat heater switches ........................ 382
Seat ventilator switches .................. 382
Snow mode switch ........................... 204
“SOS” button ...................................... 400
Talk switch
*
Telephone switches*
Tilt and telescopic steering control switch ................... 161
Tire pressure warning reset switch ................................................... 446
Trunk closer switch............................. 144
Trunk opener switch .......................... 143
Trunk opener main switch .............. 144
Vehicle-to-vehicle distance button ....................................... 242, 254
VSC OFF switch ...............................285
Window lock switch .......................... 167
Windshield wipers and washer switch ......................... 223
Tachometer ....................................... 91, 106
Tail lights .................................................... 217 Light switch............................................. 217
Replacing light bulbs .......................489
Welcome light illumination control.................................................... 123
T

649Alphabetical index
GS450h_OM_OM30F70U_(U)
Talk switch*
Telephone switches*
Theft deterrent systemAlarm...........................................................83
Immobilizer system ............................... 81
Tire inflation pressure ......................... 582 Maintenance data ............................. 582
Tire inflation pressure display function ...................................................99
Warning light ...................................... 507
Warning message .............................. 531
Tire information ..................................... 587 Glossary ................................................ 594
Size ........................................................... 590
Tire identification number............. 589
Uniform Tire Quality Grading...............................................592
Tire pressure warning system ......... 445 Function ..................................................445
Initializing................................................445
Installing tire pressure warning valves and transmitters ................445
Registering ID codes ....................... 447
Tire pressure warning reset switch....................................................446
Warning light ...................................... 507
Warning message .................. 531, 532
Tires............................................................ 443 Chains..................................................... 320
Checking................................................443
If you have a flat tire ........................... 541
Inflation pressure ............................... 582
Information ........................................... 587 Replacing .................................................541
Rotating tires ........................................ 444
Size ...........................................................582
Snow tires .............................................. 322
Spare tire..................................................541
Tire inflation pressure display
function................................................... 99
Tire pressure warning system ..... 445
Warning light ....................................... 507
Warning message...............................531
Tools ...........................................................542
Top tether strap ....................................... 68
Total load capacity.................................190
Towing Dinghy towing ....................................... 192
Emergency towing ........................... 496
Towing eyelet ...................................... 499
Trailer towing.......................................... 191
TRAC (Traction Control)................. 283
Traction battery (hybrid battery) ....... 76
Traction motor (electric motor)......... 72
Transmission .......................................... 203 Driving mode select switch ..........280
Hybrid transmission ......................... 203
If the shift lever cannot be shifted from P ...................................556
S mode.................................................... 206
Paddle shift switches........................205
Trip information ........................................ 97
Trip meters................................................... 91
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.