2019 LEXUS RX450H power

749
RX450h_RX450hL_U
9
Vehicle specifications
9-3. Initialization
Items to initialize
The following items must be initialized for normal system operation after such
cases as the 12-volt battery being reconnected, or maintenance being per-
formed on the vehicle.
ItemWhen to initializeReference
Message indicating mainte-
nance is required (U.S.A. only)• After the maintenance is per- formedP. 588
Tire pressure warning system
• When changing the tire inflationpressure by changing traveling
speed
• When changing the tire size
• When rotating the tires
P. 613
Oil maintenance• After the maintenance is per- formedP. 600
Intelligent Clearance Sonar
(ICS)• After reconnecting or changingthe 12-volt batteryP. 353
Power back door• After reconnecting or changingthe 12-volt batteryP. 150

766
RX450h_RX450hL_UWhat to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne
w genuine mechanical keys can be made
by your Lexus dealer. ( P. 133)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 135)
●Is the electronic key battery weak or depleted? ( P. 630)
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. (P. 240)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 160)
●Is the child-protector lock set?
The rear door cannot be opened from in side the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( P. 139)
If you have a problem, check the foll owing before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

767What to do if... (Troubleshooting)
RX450h_RX450hL_U
●Did you press the power switch while firmly depressing the brake pedal? \
(P. 239)
●Is the shift lever in P? ( P. 241)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 158)
●Is the steering wheel unlocked? ( P. 242)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( P. 693)
●Is the 12-volt battery discharged? ( P. 695)
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( P. 250)
●It is locked automatically to prevent theft of the vehicle. ( P. 242)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 196)
●The auto power off function will be operated if the vehicle is left in
ACCESSORY or ON mode (the hybrid sy stem is not operating) for a period
of time. ( P. 241)
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the hybrid system is stopped
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically

768What to do if... (Troubleshooting)
RX450h_RX450hL_U
●The seat belt reminder light is flashing
Are the driver and the passengers wearing the seat belts?
( P. 662, 662)
●The parking brake indicator is on
Is the parking brake released? ( P. 253)
Depending on the situation, other types of warning buzzer may also sound.
( P. 660, 667)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 86)
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. 667)
●When a warning light turns on or a warning message is displayed, refer to
P. 660, 667.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

772Alphabetical index
RX450h_RX450hL_U
Back doorPower 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

773Alphabetical index
RX450h_RX450hL_U
CareAluminum wheels ............................... 581
Exterior................................................... 580
Interior .................................................... 584
Seat belts ............................................... 585
Self-restoring coat ............................ 580
Cargo capacity............................ 220, 710
Cargo hooks .......................................... 540
Cargo net hooks ................................... 540
Chains .........................................................391
Child restraint system............................ 55 Booster seats installation................... 64
Convertible seats installation .............................................. 62
Front passenger occupant classification system ......................... 47
Infant seats definition .............................61
Infant seats installation ........................ 57
Installing CRS with LATCH anchors ................................................... 67
Installing CRS with seat belts ............................................................61
Installing CRS with top tether strap.......................................................... 70
LATCH anchors ................................... 67 Child safety
.................................................... 54
12-volt battery precautions .......................... 609, 700
Airbag precautions.............................. 39
Child restraint system......................... 55
How your child should wear the seat belt .............................. 33
Installing child restraints .................... 55
Moon roof precautions .................. 203
Panoramic moon roof precautions ....................................... 207
Power back door precautions ......................................... 152
Power window lock switch.............196
Power window precautions ...........199
Rear door child-p rotectors ............139
Removed key battery precautions .........................................631
Seat belt extender precautions .......................................... 35
Seat belt precautions .......................... 35
Seat heater precautions ................. 525
C

774Alphabetical index
RX450h_RX450hL_U
Child-protectors.....................................139
Cleaning.......................................580, 584 Aluminum wheels ............................... 581
Exterior................................................... 580
Interior .................................................... 584
Seat belts ............................................... 585
Clock ................................................ 96, 548
Coat hooks.............................................. 559
Compass .................................................. 567
Condenser .............................................. 602
Console box ........................................... 534
Consumption screen ................. 105, 124
Coolant Capacity .................................................. 715
Checking................................................. 601
Preparing and checking before winter ................................... 390
Cooling system ...................................... 601 Hybrid system overheating ..........702
Cornering lights .................................... 259
Cruise control Dynamic radar cruise control with full-speed range ................... 306
Cup holders ............................................ 535
Curtain shield airbags ........................... 37
Customizable features ....................... 736
Customized mode ............................... 379 Daytime running light system.......... 260
Defogger
Outside rear view mirrors ..............516
Rear window..........................................516
Windshield..............................................516
Differential ................................................ 716
Dimensions ............................................... 710
Dinghy towing ....................................... 238
Display Dynamic radar cruise control with full-speed range ...................306
Energy monitor..................................... 124
LKA (Lane-Keeping Assist)......... 302
Multi-information display.................. 101
Warning messages .......................... 667
Do-it-yourself maintenance............. 593
Doors Automatic door locking and unlocking system..............................139
Door lock................................................ 138
Outside rear view mirrors ..............193
Power back door ................................ 142
Rear door child-p rotectors ............139
Side doors ...............................................136
Side windows ........................................196D

775Alphabetical index
RX450h_RX450hL_U
Drive information .................................. 105
Drive-start control ..................... 213, 249
Driver’s seat belt reminder light ..... 662
Driver’s seat position memory ........... 181
DrivingBreak-in tips ...........................................214
Correct posture.....................................30
Driving mode select switch ..........379
Hybrid vehicle driving tips............ 388
Procedures ............................................. 212
Winter drive tips ................................ 390
Driving position memory...................... 181 Memory recall function.................... 184
Power easy access system .............. 181
Dynamic radar cruise control with full-speed range ....................... 306 E-Four ....................................................... 383
ECB (Electronically Controlled
Brake System) .................................... 382
Eco drive mode......................................379
EDR (Event data recorder).....................11
Electric motor Location .....................................................74
Specification ........................................... 712
Electric Power Steering (EPS) ....... 383 Warning light .........................................661
Electronic key .......................................... 132 Battery-saving function ....................159
If the electronic key does not operate properly ............................ 692
Replacing the battery ......................630
Electronically Controlled Brake System (ECB) ....................... 382
Emergency flashers ............................ 652E