airbag LEXUS RX450h 2018 Owner's Guide

664 8-2. Steps to take in an emergency
RX450h_RX450hL _U_OM48F85U■
SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (front door), side impact se nsors (rear), driver’s seat position sensor,
driver’s seat belt buckle sw itch, front passenger occupant classification system (ECU and
sensors), “AIR BAG ON” indicator light, “A IR BAG OFF” indicator light, front passen-
ger’s seat belt buckle switch, driver’s seat belt pretension er, front passenger’s seat belt
pretensioner and force limiter, airbags, in terconnecting wiring and power sources.
( → P. 36) ■
Front passenger detection sensor, seat belt reminder and warning buzzer●
If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sittin g in the seat.●
If a cushion is placed on the seat, the sens or may not detect a passenger, and the warn-
ing light may not operate properly. ■
Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insu fficient or the voltage temporarily drops,
the electric power steering system warning light may come on and the warning buzzer
may sound. ■
If the malfunction indicator lamp comes on while driving
First check the following: ●
Is the fuel tank empty?
If it is, fill the fu el tank immediately.●
Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible. ■
When the tire pressure warning light comes on
Inspect the tires to check if a tire is punctured.
If a tire is punctured: → P. 673
If none of the tires are punctured:
Turn the power switch off then turn it to ON mode. Check if the tire pressure warning
light comes on or blinks. 
If the tire pressure warning light comes on
After the temperature of the tires has lowere d sufficiently, check the inflation pressure
of each tire and adjust th em to the specified level.
If the warning light does not turn off even after several minutes have elapsed, check
that the inflation pressure of each tire is at the specified level an d perform initialization.
( → P. 613)
If the warning light does not turn off severa l minutes after the init ialization has been per-
formed, have the vehicle inspected by your Lexus dealer immediately. 
If the tire pressure wa rning light blinks for 1 minute then stays on
There may be a malfunction in the tire pressure warnin g system. Have the vehicle
inspected by your Lexus dealer immediately. 1
2

751
10 For owners
RX450h_RX450hL _U_OM48F85U Reporting safety defects for
U.S. owners ........................................... 752
Seat belt instructions for
Canadian owners (in French) ........ 753
SRS airbag instructions for
Canadian owners (in French) ........ 754
Headlight aim instructions for
Canadian owners (in French) ........ 762

754
RX450h_RX450hL _U_OM48F85U 
RX450h
SRS airbag instructions for Ca nadian owners (in French)The following is a French explanation of SRS airbag instructions extracted
from the SRS airbag section in this manual.
See the SRS airbag section for more detailed SRS airbag instructions in
English.

770
RX450h_RX450hL _U_OM48F85UAlphabetical index
Alphabetical index A/C ............................................................ 507
Air conditioning filter........................625
Automatic air conditioning
system ..................................... 507, 522
S-FLOW mode ................................... 514
ABS (Anti-lock Brake System)....... 382
Warning light ........................................ 661
Adaptive Front-lighting System
(AFS) ...................................................... 259
Adaptive Variable Suspension
System ................................................... 383
AFS (Adaptive Front-lighting
System) .................................................. 259
Air conditioning filter .......................... 625
Air conditioning system
Air conditioning filter........................625
Automatic air conditioning
system ..................................... 507, 522
S-FLOW mode ................................... 514 Airbags .........................................................36
Airbag operating conditions .......... 43
Airbag precautions for your
child.......................................................... 39
Airbag warning light ....................... 660
Correct driving posture .................... 30
Curtain shield airbag
operating conditions ....................... 43
Curtain shield airbag
precautions ............................................ 41
Front passenger occupant
classification system..........................47
General airbag precautions ........... 39
Locations of airbags............................ 36
Modification and disposal of
airbags .....................................................42
Seat cushion airbag ..............................37
Side airbag operating
conditions ............................................. 43
Side airbag precautions .................... 39
Side and curtain shield airbags
operating conditions ....................... 43
Side and curtain shield airbags
precautions .......................................... 39
SRS airbag instructions
for Canadian owners ................... 754
SRS airbags ............................................. 36A

773Alphabetical index
RX450h_RX450hL _U_OM48F85UCare
Aluminum 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 ................. 525C

774 Alphabetical index
RX450h_RX450hL _U_OM48F85UChild-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 ........................................196 D

780 Alphabetical index
RX450h_RX450hL _U_OM48F85UKeyless entry
Smart access system with
push-button start ............................. 158
Wireless remote control ....... 136, 142
Keys..............................................................132
Battery-saving function .................... 160
Electronic key ........................................132
Engine switch .......................................239
If the electronic key does not
operate properly.............................692
If you lose your keys ................ 133, 135
Key number plate ................................132
Keyless entry ..........................................132
Mechanical key .................................... 133
Power switch........................................239
Replacing the battery ...................... 630
Warning buzzer ...................................137
Wireless remote control ..................132
Knee airbags ............................................. 37 Lane-Keeping Assist (LKA) ............. 297
Language (multi-information
display) ..................................................... 113
LATCH anchors ....................................... 67
Lever
Auxiliary catch lever .........................595
Hood lock release lever.................595
Shift lever ............................................... 246
Turn signal lever ................................. 252
Wiper lever................................ 267, 272
Lexus Climate Concierge................ 506
Lexus Display Audio
controller.............................................. 402
Lexus Enform
* Lexus Enform Remote
* LEXUS Enform Safety
Connect.................................................. 571
LEXUS Enform Service
Connect................................................. 577
Lexus parking assist monitor ........... 363
Display..................................................... 364
Precautions ........................................... 370
Lexus Safety System+ ......................... 279
Automatic High Beam.................... 262
Dynamic radar cruise control
with full-speed range ................. 306
LKA (Lane-Keeping Assist) ........ 297
PCS (Pre-Collision System) ...... 286K L

786 Alphabetical index
RX450h_RX450hL _U_OM48F85USensor
Automatic headlight system ........ 260
Camera sensor .................................... 281
Humidity sensor .................................. 521
Inside rear view mirror ..................... 192
Intuitive parking assist ...................... 332
Radar sensor ......................................... 281
Rain-sensing windshield
wipers .................................................. 268
Touchless sensor ................................ 144
Service reminder indicators ............... 90
Shift lever
Hybrid transmission ....................... 246
If the shift lever cannot be
shifted from P ................................ 250
Shift lock system .............................. 250
Side airbags ............................................... 37
Side doors..................................................136
Side marker lights
Light switch .......................................... 258
Replacing light bulbs ........................637
Side mirrors ..............................................193
Adjusting and folding........................ 193
Blind Spot Monitor (BSM)............. 319
Heaters..................................................... 516
Side turn signal lights
Replacing light bulbs ........................637
Turn signal lever ................................. 252 Smart access system
with push-button start .......................158
Antenna location................................. 158
Entry functions ............................136, 142
Starting the hybrid system............. 239
Snow tires ................................................ 392
Spare tire
Inflation pressure.................................. 717
Storage location ................................. 674
Spark plug ................................................. 715
Specifications........................................... 710
Speedometer .............................................96
Sport mode ..............................................379
Steering wheel ........................................189
Adjustment............................................. 189
Audio switches ...................................406
Heated steering wheel ................... 526
Power easy access system .............. 181
Telephone switches............................ 471
Stop lights
Replacing light bulbs ....................... 637
Storage feature ..................................... 532
Storage precautions ........................... 532
Stuck
If the vehicle becomes stuck........ 706
Sun visors..................................................547
Sunshade
Panoramic moon roof..................... 204
Rear door .............................................. 557
Roof ............................................................201