2021 LEXUS RX450h warning

2TABLE OF CONTENTS
For your information ......................................6
Reading this manual .................................... 10
How to search ................................................. 11
Pictorial index ................................................. 12
1-1. For safe use Before driving .................................... 24
For safe driving.................................. 25
Seat belts ............................................. 26
SRS airbags ....................................... 30
Front passenger occupant classifi- cation system ................................. 39
Exhaust gas precautions .............. 44
1-2. Child safety Riding with children........................ 45
Child restraint systems ................. 45
1-3. Lexus Enform Lexus Enform Safety Connect .. 60
1-4. Hybrid system Hybrid system features ................. 66
Hybrid system precautions ......... 69
1-5. Theft deterrent system Immobilizer sy stem ........................ 73
Alarm.................................................... 75
2-1. Instrument cluster Warning lights and indicators .... 78
Gauges and meters ....................... 83
Multi-information display............. 88
Head-up display .............................. 95
Energy monitor/consumption screen ............................................... 993-1. Key information
Keys .................................................... 106
3-2. Opening, closing and locking the doors
Side doors ........................................ 109
Power back door ............................ 113
Smart access system with push-but- ton start ........................................... 125
3-3. Adjusting the seats Front seats.......................................... 131
Rear seats.......................................... 132
Driving position memory ............ 142
Head restraints .............................. 145
3-4. Adjusting the steering wheel and mirrors
Steering wheel ............................... 148
Inside rear view mirror ............... 149
Outside rear view mirrors......... 150
3-5. Opening, closing the windows and moon roof
Power windows ............................. 153
Moon roof ........................................ 155
Panoramic moon roof ................. 158
4-1. Before driving Driving the vehicle........................ 164
Cargo and luggage...................... 169
Vehicle load limits.......................... 172
Trailer towing (vehicles without towing package)..........................173
1For safety and security
2Vehicle status information and
indicators
3Before driving
4Driving

4TABLE OF CONTENTS
6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................... 356
Cleaning and protecting the vehi- cle interior .................................... 359
6-2. Maintenance Maintenance requirements ..... 362
General maintenance ................ 363
Emission inspection and mainte- nance (I/M) programs ............ 366
6-3. Do-it-yourself maintenance Do-it-yourself service precautions........................................................... 367
Hood.................................................. 369
Positioning a floor jack............... 369
Engine compartment................... 371
12-volt battery................................ 376
Tires ................................................... 380
Tire inflation pressure ................. 387
Wheels.............................................. 389
Air conditioning filter..................390
Windshield wiper inserts........... 392
Electronic key battery ................ 393
Checking and replacing fuses ........................................................... 395
Headlight aim................................. 397
Light bulbs ....................................... 399
7-1. Essential information Emergency flashers...................... 410
If your vehicle has to be stopped in an emergency .............................. 410If the vehicle is trapped in rising
water ................................................. 411
7-2. Steps to take in an emergency If your vehicle needs to be towed............................................................ 413
If you think something is wrong ............................................................ 417
If a warning light turns on or a warn- ing buzzer sounds...................... 418
If a warning messa ge is displayed
.......................................................... 428
If you have a flat tire .................... 432
If the hybrid syst em will not start
.......................................................... 444
If you lose your keys.................... 446
If the fuel filler door cannot be opened .......................................... 446
If the electronic key does not oper- ate properly ................................. 447
If the 12-volt battery is discharged .......................................................... 449
If your vehicle overheats ........... 454
If the vehicle becomes stuck ... 457
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 460
Fuel information............................ 469
Tire information .............................. 471
8-2. Customization Customizable features .............. 480
8-3. Init

ialization
Items to initialize ........................... 493
6Maintenance and care
7When trouble arises
8Vehicle specifications

9
Special handling may apply, See
www.dtsc.ca.gov/hazard-
ouswaste/perchlorate.
Your vehicle has components that may
contain perchlorate. These compo-
nents may include the airbags, seat belt
pretensioners, wireless remote control
batteries, and the batteries in the tire
pressure warning valve and transmit-
ters.
Perchlorate Material
WARNING
■General precautions while driving
Driving under the infl uence: Never drive
your vehicle when un der the influence of
alcohol or drugs that have impaired your
ability to operate your vehicle. Alcohol
and certain drugs delay reaction time,
impair judgment and reduce coordina-
tion, which could lead to an accident that
could result in death or serious injury.
Defensive driving: Always drive defen-
sively. Anticipate mistakes that other
drivers or pedestrians might make and
be ready to avoid accidents.
Driver distraction: Always give your full
attention to driving. Anything that dis-
tracts the driver, such as adjusting con-
trols, talking on a cellular phone or
reading can result in a collision with
resulting death or serious injury to you,
your occupants or others.
■General precaution regarding chil-
dren’s safety
Never leave children unattended in the
vehicle, and never allow children to have
or use the key.
Children may be able to start the vehicle
or shift the vehicle into neutral. There is
also a danger that children may injure
themselves by playing with the windows,
the moon roof or panoramic moon roof,
or other features of the vehicle. In addi-
tion, heat build-up or extremely cold
temperatures inside the vehicle can be
fatal to children.

10
Reading this manual
Explains symbols used in this man-
ual.
Symbols in this manual
SymbolsMeanings
WARNING:
Explains something that,
if not obeyed, could
cause death or serious
injury to people.
NOTICE:
Explains something that,
if not obeyed, could
cause damage to or a
malfunction in the vehi-
cle or its equipment.
Indicates operating or
working procedures. Fol-
low the steps in numeri-
cal order.
Symbols in illustrations
SymbolsMeanings
Indicates the action
(pushing, turning, etc.)
used to operate switches
and other devices.
Indicates the outcome of
an operation (e.g. a lid
opens).
SymbolsMeanings
Indicates the component
or position being
explained.
Means Do not, Do not do
this , or Do not let this
happen .

12Pictorial index
Pictorial index
■Exterior
The shape of the lights may differ depending on the grade, etc.
Side doors..................................................................................................................P.109
Locking/unlocking ............................................................................................................ P. 109
Opening/closing the side windows ........................................................................... P.153
Locking/unlocking by using th e mechanical key ................................................ P.447
Warning lights/warning messages .................................................................P.418, 428
Back door ................................................................................................................... P.1 13
Opening from inside the cabin ...................................................................................... P.115
Opening from outside ....................................................................................................... P.115
Warning lights/warning messages .................................................................P.418, 428
Outside rear view mirrors....................................................................................P.150
Adjusting the mirror angle ............................................................................................. P.150
Folding the mirrors ..................................................................................................... P.151, 151
Driving position memory
*...............................................................................................P.142
Defogging the mirrors ....................................................................................................P.306
Windshield wipers .................................................................................................P.206
A
B
C
D

13Pictorial index
Precautions for winter season .......................................................................................P.291
To prevent freezing (windshield wiper de-icer)
*.................................................... P.311
Precautions for car wash ............................................................................................... P.357
Fuel filler door ........................................................................................................... P.211
Refueling method ............................................................................................................... .P.211
Fuel type/fuel tank capacity ...... ................................................................................... P.462
Tires.......................................................................................................................... .P.380
Tire size/inflation pressure ............................ ................................................... P.380, 466
Winter tires/tire chains ....................................................................................................P.2 91
Checking/rotation/tire pressure warning system............................................. P.380
Coping with flat tires........................................................................................................ P .432
Hood ..........................................................................................................................P.369
Opening ........................................................................................................................ ....... P.369
Engine oil ..................................................................................................................... ......... P.463
Coping with overheating ............................................................................................... P.454
Warning messages .......................................................................................................... P.428
Headlights/front turn signal lights/front side marker lights ........... P.194, 200
Side turn signal lights ............................................................................................. P.194
Parking lights/daytime running lights............................................................. P.200
Fog lights/cornering lights
*.....................................................................P.200, 206
Rear side marker lights ....................................................................................... P.200
Stop/tail lights ........................................................................................................ P.200
Back-up lights/rear turn signal lights ..................................................... P.194, 200
Shifting the shift lever to R ................................................................................................ P. 191
License plate lights ............................................................................................... P.200
*:If equipped
Light bulbs of the exterior lights for driving
(Replacing method: P.399, Watts: P.468)
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14Pictorial index
■Instrument panel
Power switch ............................................................................................................P.184
Starting the hybrid system/changing the mo des.................................................. P.184
Emergency stop of the hybrid system ....................................................................... P.410
When the hybrid system will not start ...................................................................... P.444
Warning messages .......................................................................................................... P.428
Shift lever.................................................................................................................... P.191
Changing the shift position .............................................................................................. P.191
Precautions for towing .................................................................................................... P.413
When the shift lever does not move ...........................................................................P.192
Meters ......................................................................................................................... P.83
Reading the meters/adjusting the instrume nt panel light...........................P.83, 87
Warning lights/indicator lights ...................................................................................... P.78
When a warning light turns on ..................................................................................... P.418
Multi-information display ...................................................................................... P.88
Display ........................................................................................................................ ..............P.88
Energy monitor ................................................................................................................... P.100A
B
C
D

15Pictorial index
When the warning messages are displayed.......................................................... P.428
Parking brake switch ............................................................................................. P.195
Applying/releasing ........................................................................................................... P.195
Precautions for winter season .. ................................................................................... P.292
Warning buzzer/messages.......................................................................................... P.428
Turn signal lever ...................................................................................................... P.194
Headlight switch.................................................................................................... P.200
Headlights/side marker lights/parking lights/tail lights/license plate lights/daytime
running lights ................................................................................................................. .....P.200
Fog lights
*1........................................................................................................................... P.20 6
Windshield wiper and washer switch ..................................................... P.206, 210
Usage.......................................................................................................................... .P.206, 210
Adding washer fluid ......................................................................................................... P.3 75
Warning messages .......................................................................................................... P.428
Emergency flasher switch ....................................................................................P.410
Hood lock release lever .......................................................................................P.369
Tilt and telescopic steering contro l switch................................ ......................P.148
Adjustment ..................................................................................................................... ...... P.148
Driving position memory
*1..............................................................................................P.142
Air conditioning system ...................................................................................... P.304
Usage.....................................................................................................................................P.304
Rear window defogger...................................................................................................P.304
Audio system
*2
*1
: If equipped
*2: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
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