
638What to do if... (Troubleshooting)
RX450h_U_OM0E013U
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts? (P. 538)
●The parking brake indicator is on
Is the parking brake released? ( P. 245)
Depending on the situation, other types of warning buzzer may also sound.
( P. 536, 543)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 87)
Do one of the following to stop the alarms:
• Unlock the doors.
• Turn the power switch to ACCESSORY or ON mode, or start the hybrid system.
●Is the message displayed on the multi-information display?
Check the message on the multi-information display. ( P. 543)
●When a warning light turns on or a warning message is displayed, refer to
P. 536, 543.A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

644Alphabetical index
RX450h_U_OM0E013U
DrivingBreak-in tips ........................................ 206
Correct posture.....................................30
Driving mode select switch .......... 377
Hybrid vehicle driving tips.............387
Procedures ...........................................204
Winter drive tips ................................ 390
Driving position memory..................... 174 Memory recall function..................... 177
Power easy access system .............174
Dynamic radar cruise control ......... 323
Dynamic radar cruise control with full-speed range .......................... 311
E-Four ....................................................... 382
ECB (Electronically Controlled Brake System) ..................................... 381
Eco drive mode ......................................377
EDR (Event data recorder) .................... 11
Electric motor Location ..................................................... 76
Specification ........................................ 584
Electric Power Steering (EPS) ........ 381 Warning light .......................................537
Electronic key ..........................................132 Battery-saving function .................... 159
If the electronic key does not operate properly............................ 564
Replacing the battery ...................... 506 Electronically Controlled
Brake System (ECB) .........................381
Emergency flashers ............................ 528
Emergency, in case of If a warning buzzer sounds ..........536
If a warning light turns on ..............536
If a warning message is displayed ............................................ 543
If the 12-volt battery is discharged........................................ 568
If the electronic key does not operate properly ............................564
If the hybrid system will not start .................................................561
If you have a flat tire ..........................549
If you lose your keys................ 133, 135
If you think something is wrong...................................................535
If your vehicle becomes stuck...................................................... 578
If your vehicle has to be stopped in an
emergency ........................................ 529
If your vehicle needs to be towed ...................................................530
If your vehicle overheats ................ 574
Energy monitor ....................................... 124
E

645Alphabetical index
RX450h_U_OM0E013U
EngineACCESSORY mode...................... 233
Compartment......................................475
Engine switch ....................................... 232
Hood ........................................................ 473
How to start the hybrid system .................................................. 232
Identification number ...................... 583
If your vehicle has to be stopped in an emergency ..........529
Ignition switch (power switch) .... 232
Overheating .........................................574
Power switch........................................ 232
Engine coolant Capacity ................................................ 587
Checking................................................ 479
Preparing and checking before winter ................................... 390
Engine coolant temperature gauge .........................................................97
Engine oil Capacity ................................................ 585
Checking................................................ 476
Preparing and checking before winter ................................... 390
Engine oil maintenance data ........... 478
Engine switch ......................................... 232
Enhanced VSC ...................................... 381
EPS (Electronic Power Steering) ......... 381 Warning light .......................................537
EV drive mode....................................... 237
EV indicator ............................................... 78
Event data recorder (EDR) .................... 11 Flat tire ...................................................... 549
Floor mats................................................... 28
Fluid
Brake....................................................... 588
Transmission ....................................... 588
Washer ................................................... 482
Fog lights Replacing light bulbs .........................513
Switch ...................................................... 259
Front passenger footwell hooks.......................................................442
Front passenger occupant classification system ............................. 51
Front passenger’s seat belt reminder light ..................................... 538
Front seat heaters .................................. 415
Front seats ................................................. 164 Adjustment..............................................164
Cleaning................................................. 462
Correct driving posture .................... 30
Driving position memory................. 174
Head restraints ..................................... 179
Power easy access system ............. 174
Seat heaters ............................................415
Seat position memory ....................... 174
Front side marker lights Light switch............................................. 251
Replacing light bulbs .........................513
Wattage ................................................ 590F

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

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