open hood LEXUS RX450h 2021 User Guide

4567-2. Steps to take in an emergency
Lexus dealer.
If “Hybrid System Overheated Out-
put power reduced” is shown on the
multi-information display
1 Stop the vehicle in a safe place.
2 Stop the hybrid system and care-
fully lift the hood.
3 After the hybrid system has cooled
down, inspect the hoses and radia-
tor core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL” line
“LOW” line 5
Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
6Start the hybrid system and check if
“Hybrid System Overheated Out-
put power reduced” is shown on
the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact
your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the
nearest Lexus dealer.
A
B
A
B
C
WARNING
■When inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the
hood, do not open the hood until the
steam has subsided. The engine com-
partment may be very hot.

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

528
GAS STATION INFORMATION
Auxiliary catch lever (P.369)
Fuel filler door ( P.212)
Hood lock release lever ( P.369)
Tire inflation pressure ( P.466)
Fuel filler door opener ( P.212)
Fuel tank capacity (Ref-
erence)17.2 gal. (65 L, 14.3 Imp. gal.)
Fuel typeUnleaded gasoline onlyP.462
P.469
Cold tire inflation pres-
sureP.466
Engine oil capacity
(Drain and refill  ref-
erence)
P.463
Engine oil typeP.463
A
B
C
D
E