2018 LEXUS RX450h phone

616 7-3. Do-it-yourself maintenance
RX450h_RX450hL _U_OM48F85U■
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.
• 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 is 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 phon e 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 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 power switch off during in itialization, it is not neces-
sary to press the reset switch again as initialization will re start automatically when the
power switch has been turned to ON mode for the next time. ●
If you accidentally press the re set switch when initialization is not necessary, adjust the
tire inflation pressure to the specified leve l when the tires are co ld, and conduct initial-
ization again. ●
While the position of each tire is being de termined and the inflation pressures are not
being displayed on the multi-info rmation display, if the inflat ion pressure of a tire drops,
the tire pressure warning light will come on.

772 Alphabetical index
RX450h_RX450hL _U_OM48F85UBack door
Power back door .................................142
Touchless power back door ......... 144
Wireless remote control ..................142
Back-up lights
Replacing light bulbs ........................637
Wattage ....................................................719
Battery (12-volt battery)
Battery checking ............................... 605
If the 12-volt battery is
discharged ........................................ 695
Preparing and checking before
winter ................................................... 390
Replacing .............................................. 698
Warning light ...................................... 660
Battery (traction battery) ..................... 78
Blind Spot Monitor (BSM)..................319
Blind Spot Monitor
function ............................................ 323
Rear Cross Traffic Alert
function ............................................ 327 Bluetooth ®
............................................. 482
Audio system ....................................... 459
Hands-free system
(for cellular phone) .........................461
Bottle holders .........................................537
Brake
Brake Hold ........................................... 256
Fluid ............................................................ 716
Parking brake ...................................... 253
Regenerative braking ..........................76
Warning light ...................................... 660
Brake assist ............................................. 382
Brake Hold.............................................. 256
Warning light .........................................661
Break-in tips ............................................. 214
Brightness control
Instrument panel light control ........ 98
BSM (Blind Spot Monitor) ................. 319
Blind Spot Monitor function......... 323
Rear Cross Traffic Alert
function.................................................327B

778 Alphabetical index
RX450h_RX450hL _U_OM48F85UHands-free system
(for cellular phone) .............................461
Head restraints ....................................... 186
Head-up display....................................... 118
Headlight cleaner................................. 267
Headlights ............................................... 258
Automatic headlight leveling ...... 260
Automatic High Beam .................... 262
Light switch .......................................... 258
Replacing light bulbs ........................637
Wattage ....................................................719
Windshield wiper linked
headlight illumination..................... 261
Heated steering wheel ....................... 526
Heaters
Automatic air conditioning
system ..................................... 507, 522
Heated steering wheel ....................526
Outside rear view mirrors .............. 516
Seat heaters ..............................526, 527
High mounted stoplight
Replacing ...............................................637
Hill-start assist control ........................ 382
Hood .......................................................... 595
Open ....................................................... 595
Hooks
Cargo hooks ....................................... 540
Cargo net hooks ............................... 540
Front passenger footwell
hooks ....................................................557
Grocery bag hooks........................... 541
Retaining hooks (floor mat) ............. 28 Horn.............................................................189
HUD (Head-up display)....................... 118
Humidity sensor...................................... 521
Hybrid battery air vent ........................... 79
Hybrid battery (traction battery)
Location .................................................... 78
Specification ........................................... 713
Hybrid system............................................ 74
Emergency shut off system ..............79
Energy monitor/
consumption screen....................... 124
EV drive mode ................................... 244
High voltage components ............... 78
Hybrid System Indicator ................... 99
Hybrid system precautions ............. 78
Hybrid vehicle driving tips ........... 388
If the hybrid system will not
start....................................................... 690
Overheating......................................... 702
Power (ignition) switch................... 239
Regenerative braking ..........................76
Starting the hybrid system............. 239
Vehicle proximity notification
system ..................................................... 75
Hybrid System Indicator .......................99
Hybrid transmission .............................246
If the shift lever cannot be
shifted from P ...................................250
Paddle shift switches............ 247, 248
S mode.................................................... 248H

786 Alphabetical index
RX450h_RX450hL _U_OM48F85USensor
Automatic headlight system ........ 260
Camera sensor .................................... 281
Humidity sensor .................................. 521
Inside rear view mirror ..................... 192
Intuitive parking assist ...................... 332
Radar sensor ......................................... 281
Rain-sensing windshield
wipers .................................................. 268
Touchless sensor ................................ 144
Service reminder indicators ............... 90
Shift lever
Hybrid transmission ....................... 246
If the shift lever cannot be
shifted from P ................................ 250
Shift lock system .............................. 250
Side airbags ............................................... 37
Side doors..................................................136
Side marker lights
Light switch .......................................... 258
Replacing light bulbs ........................637
Side mirrors ..............................................193
Adjusting and folding........................ 193
Blind Spot Monitor (BSM)............. 319
Heaters..................................................... 516
Side turn signal lights
Replacing light bulbs ........................637
Turn signal lever ................................. 252 Smart access system
with push-button start .......................158
Antenna location................................. 158
Entry functions ............................136, 142
Starting the hybrid system............. 239
Snow tires ................................................ 392
Spare tire
Inflation pressure.................................. 717
Storage location ................................. 674
Spark plug ................................................. 715
Specifications........................................... 710
Speedometer .............................................96
Sport mode ..............................................379
Steering wheel ........................................189
Adjustment............................................. 189
Audio switches ...................................406
Heated steering wheel ................... 526
Power easy access system .............. 181
Telephone switches............................ 471
Stop lights
Replacing light bulbs ....................... 637
Storage feature ..................................... 532
Storage precautions ........................... 532
Stuck
If the vehicle becomes stuck........ 706
Sun visors..................................................547
Sunshade
Panoramic moon roof..................... 204
Rear door .............................................. 557
Roof ............................................................201

787Alphabetical index
RX450h_RX450hL _U_OM48F85USwitches
Audio remote control
switches .............................................. 406
Automatic High Beam switch ..... 262
Brake hold switch ..............................256
Cruise control
switch................................................... 306
Door lock switch ................................. 138
Driving mode select switch ..........379
Driving position memory
switches .................................................. 181
Electronic sunshade switch ..........204
Emergency flashers switch ...........652
EV drive mode switch ..................... 244
Fog light switch ...................................266
Garage door opener
switches .............................................. 560
Heated steering wheel
switch....................................................526
HUD (Head-up display)
switches .................................................. 118
Ignition switch ......................................239
Light switch .......................................... 258
LKA (Lane-Keeping Assist)
switch..................................................... 301
Meter control switches .................... 103
Moon roof switches......................... 200
“ODO/TRIP” switch ......................... 104
Outside rear view mirror
switches ................................................ 193 Paddle shift switches............ 247, 248
Panoramic moon roof
switches .............................................. 204
Parking brake switch ....................... 253
Power back door opener
and closer switch .................. 143, 145
Power switch ....................................... 239
Power window switch .......................196
Rear window and
outside rear view mirror
defoggers switch..............................516
Rear window wiper and
washer switch ...................................272
Seat heater switches ............ 526, 527
Seat ventilator switches .................. 527
“SOS” button ......................................... 571
Talk switch................................... 471, 493
Telephone switch ................................ 471
Vehicle-to-vehicle
distance button................................306
VSC OFF switch ...............................384
Window lock switch ..........................196
Windshield wiper and
washer switch .................................. 267

788 Alphabetical index
RX450h_RX450hL _U_OM48F85UTachometer ............................................... 96
Tail lights
Light switch .......................................... 258
Replacing light bulbs ........................637
Talk switch ..................................... 471, 493
Telephone switch.................................... 471
Theft deterrent system
Alarm...........................................................86
Immobilizer system ..............................83
Tire inflation pressure
Maintenance data ................................ 717
Warning light .......................................662
Tire information ..................................... 723
Glossary .................................................730
Size ............................................................ 726
Tire identification number.............. 725
Uniform Tire Quality
Grading...............................................728
Tire pressure warning system
Initializing................................................. 612
Installing tire pressure warning
valves and transmitters ................. 612
Registering ID codes ........................ 613
Warning light .......................................662 Tires .............................................................. 611
Chains .......................................................391
Checking .................................................. 611
Glossary................................................. 730
If you have a flat tire .......................... 673
Inflation pressure...................... 620, 717
Replacing ............................................... 673
Rotating tires ........................................... 611
Size ............................................................. 717
Snow tires .............................................. 392
Spare tire...................................... 673, 717
Tire identification number ............. 725
Tire pressure warning system ....... 612
Uniform Tire Quality Grading.... 728
Warning light ....................................... 662
Tools ........................................................... 674
Top tether strap ........................................70
Total load capacity................................. 710
Touchless power back door .............. 144
Towing
Dinghy towing ..................................... 238
Emergency towing ........................... 654
Towing eyelet ......................................656
Trailer Sway Control ....................... 382
Trailer towing............................ 224, 237T