
5256-3. Do-it-yourself maintenance
6
Maintenance and care
RX450h_U_OM0E013U
■LED lights
The headlight low beams, headlight high beams, front turn signal lights (vehicles with tri-
ple-beam headlights), parking lights and daytime running lights, front fog lights, corner-
ing lights (if equipped), front side marker lights (vehicles with tr iple-beam headlights),
side turn signal lights, stop/t ail lights, rear turn signal light (vehicles with triple-beam
headlights), rear side marker lights, high moun ted stoplight, license plate lights, and outer
foot lights consist of a number of LEDs. If any of the LEDs has burned out, take your vehi-
cle to your Lexus dealer to have the light replaced.
■Condensation build-up on the inside of a lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact your Lexus dealer for more information in the following situations:
●Large drops of water have built up on the inside of a lens.
●Water has built up inside a headlight.
■When replacing light bulbs
P. 510
WARNING
■To prevent injury
Before performing any light bulb replacement procedure, be sure to turn the power
switch off. Failure to do so may result in burns from hot components or a part of your
body may get caught on an operating component, possibly causing serious injury.
■Replacing light bulbs
●Turn off the lights. Do not attempt to replac e the bulb immediately after turning off the
lights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. When it is unavoid-
able to hold the glass portion, use and hold with a clean dry cloth to avoid getting
moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so may result
in heat damage, fire, or water entering th e headlight unit. This may damage the head-
lights or cause condensation to build up on the lens.
●Do not attempt to repair or disassemble th e light bulbs, connectors, electric circuits
or component parts.
Doing so may result in death or se rious injury due to electric shock.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installing to prevent heat damage.

5908-1. Specifications
RX450h_U_OM0E013U
Light bulbs
Light bulbsBulb No.WType
Exterior
Front side marker lights*15B
Front turn signal lights*17444NA28/8A
Rear turn signal lights*121A
Back-up lights92116B
Interior
Door courtesy lights*25B
Vanity lights8B
Luggage compartment light5B
A: Wedge base bulbs (amber) B: Wedge base bulbs (clear)
*1: Vehicles with single-beam headlights
*2: Vehicles without door trim ornament lights

641Alphabetical index
RX450h_U_OM0E013U
Anchor brackets ........................................ 61
AntennaSmart access system with push-button start ................... 158
Anti-lock Brake System (ABS)........ 381 Warning light .......................................537
Approach warning.....................318, 330
Armrest .................................................... 443
Assist grips .............................................. 444
Audio system
*
Automatic air conditioning system .................................................... 405 Air conditioning filter......................... 501
Automatic air conditioning system ................................................. 405
S-FLOW mode ............................... 406
Automatic headlight leveling system .................................................... 253
Automatic High Beam ....................... 255
Automatic light control system.........251
Auxiliary boxes ...........................426, 430
Back door Power back door .................................142
Touchless power back door ......... 144
Wireless remote control ..................142
Back-up lights Replacing light bulbs ......................... 513
Wattage ................................................. 590 Battery (12-volt battery)
Battery checking ................................483
If the 12-volt battery is discharged........................................ 568
Preparing and checking before winter....................................................390
Warning light .......................................536
Battery (traction battery) ..................... 80
Blind Spot Monitor (BSM) ............... 363 Blind Spot Monitor function ............................................367
Rear Cross Traffic Alert function ............................................. 371
Bottle holders .........................................425
Brake Brake Hold ........................................... 249
Fluid ......................................................... 588
Parking brake ...................................... 245
Regenerative braking ......................... 78
Warning light .......................................536
Brake assist ...............................................381
Brake Hold...............................................249 Warning light ....................................... 537
Break-in tips ........................................... 206
Brightness control Instrument panel light control ........ 99
BSM (Blind Spot Monitor) ............... 363 Blind Spot Monitor function......... 367
Rear Cross Traffic Alert function.................................................. 371
B
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

646Alphabetical index
RX450h_U_OM0E013U
Front turn signal lightsReplacing light bulbs ......................... 513
Turn signal lever ................................. 244
Wattage ................................................. 590
Fuel Capacity ................................................ 584
Fuel gauge ................................................ 97
Information ............................................. 591
Refueling................................................. 267
Type ......................................................... 584
Fuel filler door ........................................ 267 Refueling................................................. 267
When the fuel filler door cannot be opened .........................269
Fuses ..........................................................508
Garage door opener .......................... 445
Gauges .........................................................97
Glove box ................................................ 422
Grocery bag hooks ............................. 428 Head restraints........................................ 179
Head-up display ...................................... 118
Headlight cleaner ................................ 260
Headlights ................................................. 251
Automatic headlight leveling ....... 253
Automatic High Beam.................... 255
Light switch............................................. 251
Replacing light bulbs .........................513
Wattage ................................................ 590
Windshield wiper linked headlight illumination ................... 254
Heated steering wheel ........................ 415
Heaters Automatic air conditioning system .............................................. 405
Heated steering wheel ................... 415
Outside rear view mirrors ........... 409
Seat heaters .............................. 415 , 416
High mounted stoplight Replacing .................................................513
Hill-start assist control .........................381
Hood ..........................................................473 Open ....................................................... 473
Hooks Cargo hooks ........................................427
Cargo net hooks ................................427
Front passenger footwell hooks.................................................... 442
Grocery bag hooks ......................... 428
Retaining hooks (floor mat)............. 28
G
H

649Alphabetical index
RX450h_U_OM0E013U
License plate lightsLight switch ............................................ 251
Replacing light bulbs ......................... 513
Light Automatic High Beam ................... 255
Cornering lights.................................. 252
Fog light switch ...................................259
Headlight switch.................................. 251
Illuminated entry system .................420
Interior light list ......................................417
Interior lights .......................................... 418
Luggage compartment light ......... 148
Personal lights ...................................... 419
Replacing light bulbs ......................... 513
Turn signal lever ................................. 244
Vanity lights .......................................... 432
Wattage ................................................. 590
Welcome lighting ..............................253
Light bulbs Replacing ................................................ 513
Wattage ................................................. 590
LKA (Lane-Keeping Assist)............. 292
Lock steering column ......................... 235
Luggage cover ...................................... 428 Maintenance
Do-it-yourself maintenance ........... 471
General maintenance ..................... 467
Maintenance data..............................582
Maintenance requirements .......... 465
Malfunction indicator lamp .............. 536
Meter Head-up display ................................... 118
Indicators .................................................. 92
Instrument panel light control..................................................... 99
Meters .........................................................97
Multi-information display.................102
Settings .................................................... 109
Warning lights.....................................536
Warning messages .......................... 543
Mirrors Inside rear view mirror..................... 183
Outside rear view mirror defoggers...........................................409
Outside rear view mirrors ............. 185
Vanity mirrors ..................................... 432
Moon roof Door lock linked moon roof operation..................................... 191
Jam protection function....................194
Operation................................................193M
*: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

654Alphabetical index
RX450h_U_OM0E013U
SensorAutomatic headlight system .........253
Camera sensor ................................... 273
Humidity sensor .................................. 413
Inside rear view mirror ..................... 184
Intuitive parking assist ......................339
Radar sensor ........................................ 273
Rain-sensing windshield wipers .................................................... 261
Touchless sensor ................................ 144
Service reminder indicators ............... 92
Shift lever ................................................. 239
Side airbags ............................................... 39
Side doors..................................................136
Side marker lights Light switch ............................................ 251
Replacing light bulbs ......................... 513
Side mirrors ............................................. 185 Adjusting and folding........................ 185
Blind Spot Monitor (BSM)............363
Heaters................................................... 409 Side turn signal lights
Replacing light bulbs .........................513
Turn signal lever ................................. 244
Smart access system with push-button start .......................158 Antenna location................................. 158
Entry functions ............................136, 142
Starting the hybrid system............. 232
Snow tires ................................................ 392
Spare tire Inflation pressure............................... 589
Storage location ................................ 550
Spark plug ............................................... 587
Specifications......................................... 582
Speedometer ............................................. 97
Sport mode .............................................. 377
Steering wheel ......................................... 181 Adjustment............................................... 181
Heated steering wheel .....................415
Power easy access system ............. 174
Stop lights Replacing light bulbs .........................513
Storage feature ....................................... 421
Storage precautions ............................. 421
Stuck If the vehicle becomes stuck........ 578