2021 LEXUS RX450h fuel

4708-1. Specifications
ing for a short time while accelerating or
driving uphill. This is normal and there is
no need for concern.
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If improper
fuels are used, the engine will be dam-
aged.
●Do not use leaded gasoline.
Leaded gasoline can cause damage to
your vehicle’s three-way catalytic con-
verters causing the emission control
system to malfunction.
●Do not use gasohol other than the type
previously stated.
Other gasohol may cause fuel system
damage or vehicle performance prob-
lems.
●Using unleaded gasoline with an
octane number or rating lower than
the level previously stated may cause
persistent heavy knocking.
At worst, this may lead to engine dam-
age and will void the vehicle warranty.
■When refueling with gasohol
Take care not to spill gasohol. It can dam-
age your vehicle’s paint.
■Fuel-related poor driveability
If poor driveability (poor hot starting,
vaporization, engine knocking, etc.) is
encountered after using a different type
of fuel, discontinue the use of that type of
fuel.

4758-1. Specifications
8
Vehicle specifications
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pressureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of hybrid transmis-
sion, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning
and additional weight optional engine
Maximum loaded vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight
150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
* that fol-
lows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Production options weight
The combined weight of installed regular produc-
tion options weighing over 5 lb. (2.3 kg) in excess of
the standard items which they replace, not previ-
ously considered in curb weight or accessory
weight, including heavy duty brakes, ride levelers,
roof rack, heavy duty 12-volt battery, and special
trim

4818-2. Customization
8
Vehicle specifications
■Gauges, meters and multi-information display (P.78, 83, 88)
Function*1Default settingCustomized setting
LanguageEnglishFrenchOO—Spanish
Units*2miles (MPG)
km (km/L)
OO—km (L/100km)
miles (MPG Impe-
rial)
Drive information 1
Current fuel con-sumption
Customizable items: P.90—O—
Average fuel econ-
omy (after reset)
Drive information 2
Distance (driving range)
Average vehicle
speed (after reset)
Drive information 3
Average fuel econ- omy (after refuel)
Elapsed time (after start)
Clock12-hour display24-hour display—O—
Pop-up displayOnOff—O—
Accent color*3Color 1Color 2OO—
Needle*4Color 1Color 2—O—Color 3
Tachometer settingChange according to driving modeAlways tachometer
—O—Always Hybrid Sys- tem Indicator
Rev indicator*44000 r/min.
2000 - 6000 r/min.
—O—
Off
Rev peak*4OnOff—O—
ABC

513Alphabetical Index
Alphabetical Index
A
A/CAir conditioning filter ...............................390
Front automatic air conditioning system.........................................................................304
Front seat concentr ated airflow mode
(S-FLOW)................................................... 312
Micro dust and pollen filter...................... 311
Rear automatic air conditioning system ...........................................................................315
ABS (Anti-lock Brake System).............. 283 Warning light ............................................... 420
ACA (Active Cornering Assist) ........... 284
Active Cornering Assist (ACA) ........... 284
Adaptive Front-lighting System (AFS)202
Adaptive Variable Suspension System284
AFS (Adaptive Front-lighting System)202
AHB (Automatic High Beam) ............... 203
Air conditioning filter ................................. 390
Air conditioning system Air conditioning filter ...............................390
Front automatic air conditioning system.........................................................................304
Front seat concentr ated airflow mode
(S-FLOW)................................................... 312
Micro dust and pollen filter...................... 311
Rear automatic air conditioning system ...........................................................................315
Airbags Airbag operating conditions................... 33
Airbag precautions for your child ........ 36
Correct driving posture ............................ 25
Curtain shield airbag operating condi- tions .................................................................. 33
Curtain shield airbag precautions ....... 36
Front passenger occupant classification system ............................................................. 39
General airbag precautions ................... 36
Locations of airbags.................................... 30
Modification and disposal of airbags . 38
Side airbag operating conditions ......... 33 Side airbag precautions ............................ 36
Side and curtain shie
ld airbags operating
conditions ...................................................... 33
Side and curtain shield airbags precau- tions .................................................................. 36
SRS airbags......................................................30
SRS warning light.......................................420
Alarm ................................................................... 75 Warning buzzer .......................................... 418
Anchor brackets ..................................... 46, 57
Antennas (smart acc ess system with
push-button start).......................................125
Anti-lock Brake System (ABS).............. 283 Warning light ...............................................420
Approach warning...................................... 244
Armrest............................................................ 342
Assist grips ..................................................... 342
Audio system-linked display ...................... 92
Automatic headlight leveling system ....201
Automatic High Beam .............................. 203
Automatic light control system..............200
Auxiliary boxes ................................... 329, 331
Average fuel economy................................. 90
Average vehicle speed ................................ 90
AWD Control.................................................... 91
B
Back door .......................................................... 113
Back-up light Wattage ......................................................... 468
Back-up lights Replacing light bulbs ...................400, 406
Battery (12-volt battery) Battery checking ........................................ 376
If the 12-volt battery is discharged ....449
Preparing and checking before winter............................................................................291
Warning light ................................................ 419
Battery (traction batter y) ............................ 69
Blind Spot Monitor (BSM)........................247
Bottle holders ................................................ 328

514Alphabetical Index
BrakeBrake hold...................................................... 198
Fluid ......................................................375, 465
Parking brake ............................................... 195
Regenerative braking ................................. 67
Warning light ................................................ 418
Brake assist .................................................... 283
Break-in tips.....................................................165
Brightness control Instrument panel light control ................ 87
BSM (Blind Spot Monitor)........................247
Buzzer Hands off steering wheel warning (LTA)......................................................................... 234
C
Care Exterior ...........................................................356
Interior .............................................................359
Seat belts........................................................359
Wheels and wheel ornaments............356
Cargo capacity..................................... 169, 172
Cargo hooks ................................................. 329
Cargo net hooks .......................................... 329
Center Display .............................................300
Chains .............................................................. 292
Child restraint system Fixed with a LATCH system .................. 54
Fixed with a seat belt...................................50
Front passenger occupant classification system ............................................................. 39
Points to remember .................................... 45
Riding with children ..................................... 45
Types of child restraint system installation method ........................................................... 46
Using an anchor bracket .......................... 57
Child safety 12-volt battery precautions .......378, 453
Airbag precautions...................................... 36
Child restraint system................................. 46
Heated steering wheel and seat heater precautions................................................. 318 How your child should wear the seat belt
............................................................................. 27
Moon roof precautions.............................157
Panoramic moon roof precautions ... 160
Power back door precautions ............... 113
Power window lock switch .................... 155
Power window precautions .................. 154
Rear door child-protectors ..................... 112
Seat belt extender precautions.............. 27
Seat belt precautions .................................. 45
Child-protectors............................................. 112
Cleaning Exterior........................................................... 356
Interior ............................................................ 359
Radar sensor ..................................................214
Seat belts ....................................................... 359
Wheels and wheel ornaments ........... 356
Clock ........................................................83, 343
Coat hooks..................................................... 343
Coin box.......................................................... 328
Compass ......................................................... 352
Condenser ..................................................... 374
Console box .................................................. 326
Cooling system............................................. 373 Engine overheating...................................454
Hybrid system overheating ................. 456
Cornering lights ........................................... 202 Replacing light bulbs ............................... 400
Cruise control Dynamic radar cruise control with full-speed range ......................................238
Cup holders ................................................... 327
Current fuel consumption .......................... 90
Curtain shield airbags .................................. 30
Customizable features ..............................480
D
Daytime running light system .................200
Defogger Outside rear view mirrors.................... 306
Rear window ............................................... 306
Windshield ................................................... 306

516Alphabetical Index
If the electronic key does not operate properly....................................................... 447
If the fuel filler door cannot be opened ......................................................................... 446
If the hybrid system will not start ........ 444
If the vehicle is trapped in rising water411
If you have a flat tire .................................. 432
If you lose your keys................................. 446
If you think something is wrong ........... 417
If your vehicle becomes stuck............. 457
If your vehicle has to be stopped in an
emergency ................................................. 410
If your vehicle needs to be towed ....... 413
If your vehicle overheats ........................ 454
Energy monitor ..................................... 99, 100
Engine ACCESSORY mode ...............................187
Compartment ............................................... 371
Engine switch................................................ 184
Hood................................................................369
How to start the hybrid system ........... 184
Identification number .................................461
If the hybrid system will not start ........ 444
If your vehicle has to be stopped in an
emergency ................................................. 410
Ignition switch (power switch) ............. 184
Overheating................................................. 454
Power switch ................................................ 184
Tachometer ..................................................... 83
Engine coolant Capacity ......................................................... 464
Checking ....................................................... 373
Preparing and checking before winter........................................................................... 291
Engine coolant temperature gauge ....... 83
Engine oil Capacity ......................................................... 463
Checking ......................................................... 371
Preparing and checking before winter........................................................................... 291
Warning light .................................................419
Engine oil maintenance data .................. 373 Engine switch (power switch) ................. 184
If your vehicle has to be stopped in an emergency .................................................. 410
EPS (Electric Power Steering) .............. 284 Warning light .................................................421
EV drive mode............................................... 189
EV indicator .......................................................67
Event data recorder (E DR) ........................... 8
F
Flat tire
Tire pressure warning system .............382
Vehicles with a spare tire....................... 432
Floor mats .......................................................... 24
Fluid Brake ............................................................... 465
Hybrid transmission................................. 465
Washer ...........................................................375
Fog lights Switch.............................................................. 206
Footwell light ...................................................321
Front automatic air conditioning system .......................................................................... 304
Front fog lights Replacing light bulbs ............................... 400
Front passenger footwell hooks ............ 345
Front passenger occupant classification system .............................................................. 39
Front seats Adjustment ....................................................... 131
Cleaning ........................................................ 359
Correct driving posture ............................ 25
Driving position memory .........................142
Head restraints............................................. 145
Memory recall function.............................143
Power easy access system .....................142
Seat heaters ................................................... 318
Seat position memory ...............................142
Seat ventilators ............................................. 318
Front side marker light Light switch .................................................. 200
Replacing light bulbs ............................... 400

517Alphabetical Index
Front side marker lightsReplacing light bulbs............................... 400
Wattage..........................................................468
Front turn signal lights Replacing light bulbs................... 400, 402
Turn signal lever ...........................................194
Wattage..........................................................468
Fuel Capacity ......................................................... 462
Fuel gauge ....................................................... 83
Information .................................................... 469
Refueling ............................................................211
Type.................................................................. 462
Warning light ................................................. 421
Fuel consumption Average fuel economy .............................. 90
Current fuel consumption........................ 90
Fuel filler door If the fuel filler door cannot be opened......................................................................... 446
Refueling ............................................................211
Fuel gauge ......................................................... 83
Fuses ................................................................. 395
G
Garage door opener ................................. 346
Gauges ............................................................... 83
G-force................................................................. 91
Glove box ....................................................... 326
Glove box light ............................................. 326
Grocery bag hooks .................................... 330
H
Hands Free Power Back Door ................. 116
Head restraints ...............................................145
Headlight aim ................................................ 397
Headlights Adaptive Front-lighting System (AFS)......................................................................... 202
Automatic High Beam system............ 203
Light switch ...................................................200 Replacing light bulbs ............................... 400
Head-up display.............................................. 95 Driving information display area ...........95
HUD (Head-up display) switch ............ 96
Hybrid System Indicator ........................... 99
Navigation system-linked display ........98
Settings............................................................... 97
Heated steering wheel ............................... 318
Heaters Front automatic air conditioning system......................................................................... 304
Heated steering wheel ............................. 318
Outside rear view mirrors.................... 306
Rear automatic air conditioning system
........................................................................... 315
Seat heaters ................................................... 318
High mounted stoplight Replacing light bulbs ............................... 400
High-voltage components ......................... 69
Hill-start assist control ............................... 284
Hood Open............................................................... 369
Hooks Cargo hooks................................................329
Cargo net hooks ........................................329
Coat hooks ...................................................343
Front passenger footwell hooks.........345
Grocery bag hooks................................. 330
Retaining hooks (floor mat) ..................... 24
Horn ................................................................... 148
HUD (Head-up display) switch ................ 96
Hybrid battery (traction battery) Location ............................................................. 69
Specification ................................................. 462
Warning message ........................................ 72
Hybrid battery (traction battery) air vents ............................................................................... 71
Hybrid system .................................................. 66 Acoustic Vehicle Alerting System .......68
Emergency shut off system...................... 72
Energy monitor/consumption screen99
EV drive mode............................................. 189

520Alphabetical Index
Dynamic radar cruise control with full-speed range ...................................... 238
Energy monitor............................................ 100
G-force................................................................ 91
LTA (Lane Tracing Assist).................... 232
Menu icons ...................................................... 89
Meter control switches .............................. 89
Navigation system-linked display ........ 92
Pop-up display...............................................88
Settings .............................................................. 92
Suggestion function..................................... 93
Tire pressure ................................................ 382
Units ...................................................................... 91
Warning message..................................... 428
N
Navigation system-linked display....92, 98
Noise from under vehicle ...............................6
O
“ODO TRIP” switch ...................................... 87
Odometer ......................................................... 87
Odometer and trip meter display Display items ................................................... 87
“ODO TRIP” switch .................................... 87
Pop-up display............................................... 87
Oil Engine oil ....................................................... 463
Rear differential oil ....................................465
Opener Fuel filler door..................................................211
Hood................................................................369
Outer foot lights Location............................................................ 321
Outside door handle lights........................321
Outside rear view mirrors Adjustment..................................................... 150
BSM (Blind Sport Monitor) ................. 247
Folding ............................................................... 151
Linked mirror functi on when reversing
.......................................................................... 150 Mirror position memory ...........................142
Outside rear view mirror defoggers306
RCTA function ..............................................261
Outside temperature.................................... 83
Overheating .................................................. 454
P
Paddle shift switches ..........................192, 193
Panic mode ......................................................107
Panoramic moon roof Jam protection function ........................... 159
Operation ....................................................... 158
Parking assist sensors (intuitive parking assist) ............................................................. 255
Parking brake Operation ....................................................... 195
Parking brake engaged warning buzzer............................................................................197
Warning light ............................................... 424
Warning message .......................................197
Parking lights Light switch .................................................. 200
Replacing light bulbs ............................... 400
Parking Support Brake function (for rear-crossing vehicles) ...........................277Function .......................................................... 277
Parking Support Brake function (static objects) ........................................................... 271Function ............................................................ 271
PCS (Pre-Collision System) Function ..........................................................220
PCS OFF switch ........................................ 222
Warning light ............................................... 424
Personal lights.................................................321
PKSA (Parking Support Alert) .............. 253
PKSB (Parking Support Brake)............. 266 Warning message ..................................... 270
Power back door ............................................ 113 Hands Free Power Back Door ............. 116
Smart access system with push-button start ................................................................... 114
Power control unit.......................................... 69