2021 LEXUS RX450h fuel

RX450hL-RX450h_U
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Pictorial indexSearch by illustration
For safety
and securityMake sure to read through them
(Main topics: Child seat, theft deterrent system)
Vehicle status
information and
indicatorsReading driving-related information
(Main topics: Meters, multi-information display)
Before drivingOpening and closing the doors and windows,
adjustment before driving
(Main topics: Keys, doors, seats)
DrivingOperations and advice which are necessary for driving
(Main topics: Starting hybrid system, refueling)
Interior featuresUsage of the interior features
(Main topics: Air conditioner, storage features)
Maintenance
and careCaring for your vehicle and maintenance procedures
(Main topics: Interior and exterior, light bulbs)
When trouble
arisesWhat to do in case of malfunction and emergency
(Main topics: Battery discharge, flat tire)
Vehicle
specificationsVehicle specifications, customizable features
(Main topics: Fuel, oil, tire inflation pressure)
For ownersReporting safety defects for U.S. owners, and seat belt,
SRS airbag and headlight aim instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

3TABLE OF CONTENTS
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Trailer towing (vehicles with towing package) ........................................ 173
Dinghy towing ................................ 183
4-2. Driving procedures Power (ignition) switch ............... 184
EV drive mode ............................... 189
Hybrid transmission ...................... 191
Turn signal lever............................. 194
Parking brake ................................. 195
Brake Hold....................................... 198
4-3. Operating the lights and wipers Headlight switch ........................... 200
AHB (Automatic High Beam) ........................................................... 203
Fog light switch ............................. 206
Windshield wipers and washer ........................................................... 206
Rear window wiper and washer ............................................................ 210
4-4. Refueling Opening the fuel tank cap.......... 211
4-5. Using the driving support systems Lexus Safety System + 2.0 ........ 214
PCS (Pre-Collision System).... 220
LTA (Lane Tracing Assist)........ 227
RSA (Road Sign Assist) ............. 236
Dynamic radar crui se control with
full-speed range......................... 238
BSM (Blind Spot Monitor) ....... 247
PKSA (Parking Support Alert) ........................................................... 253
Intuitive parking assist ................ 255
RCTA (Rear cross traffic alert) function ........................................... 261
PKSB (Parking Support Brake) ........................................................... 266Parking Support Brake function
(static objects) .............................. 271
Parking Support Brake function (rear-crossing vehicles) .......... 277
Driving mode select switch ...... 281
Driving assist systems ................ 283
4-6. Driving tips Hybrid vehicle driving tips ....... 289
Winter driving tips ......................... 291
Utility vehicle precautions........ 293
5-1. Remote Touch/Display Remote Touch............................... 298
Center Display.............................. 300
5-2. Lexus Climate Concierge Lexus Climate Concierge........ 303
5-3. Using the air conditioning system and defogger
Front automatic air conditioning system ............................................ 304
Rear automatic air conditioning system ............................................. 315
Heated steering wheel/seat heat- ers/seat ventilators.................... 318
5-4. Using the interior lights Interior lights list ............................. 321
5-5. Using the storage features List of storage features .
.............324
Luggage compartment features .......................................................... 329
5-6. Using the other interior features Other interior features .............. 334
Garage door opener ................. 346
Compass ......................................... 352
5Interior features

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

6
Please note that this manual applies to
all models and explains all equipment,
including options. Therefore, you may
find some explanations for equipment
not installed on your vehicle.
All specifications provided in this man-
ual are current at the time of printing.
However, because of the Lexus policy
of continual product improvement, we
reserve the right to make changes at
any time without notice.
Depending on specifications, the vehi-
cle shown in the illustrations may differ
from your vehicle in terms of color and
equipment.
Approximately five hours after the
hybrid system is turned off, you may
hear sound coming from under the
vehicle for several minutes. This is the
sound of a fuel evaporation leakage
check and, it does not indicate a mal-
function.
A wide variety of non-genuine spare
parts and accessories for Lexus vehi-
cles are currently available in the mar-
ket. You should know that Toyota does
not warrant these products and is not responsible for their performance,
repair, or replacement, or for any dam-
age they may cause to, or adverse
effect they may have on, your Lexus
vehicle.
This vehicle should not be modified
with non-genuine Lexus products.
Modification with non-genuine Lexus
products could affect its performance,
safety or durability, and may even vio-
late governmental regulations. In addi-
tion, damage or performance
problems resulting from the modifica-
tion may not be covered under war-
ranty.
The installation of a mobile two-way
radio system in your vehicle could
affect electronic systems such as:

Hybrid system
 Multiport fuel injection sys-
tem/sequential multiport fuel injec-
tion system
 Lexus Safety System + 2.0
 Anti-lock brake system
 Vehicle dynamics integrated man-
agement
 SRS airbag system
 Seat belt pretensioner system
Be sure to check with your Lexus
dealer for precautionary measures or
special instructions regarding installa-
tion of a mobile two-way radio system.
High voltage parts and cables on the
For your information
Main Owner’s Manual
Noise from under vehicle after
turning off the hybrid system
Accessories, spare parts and
modification of your Lexus
Installation of a mobile two-way
radio system

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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16Pictorial index
■Switches
Automatic High Beam switch............................................................................ P.203
Power back door switch......................................................................................... P.115
HUD (Head-up display) switch
*1.......................................................................... P.96
Fuel filler door opener switch.............................................................................. P.212
Instrument panel light control switches .............................................................P.87
“ODO TRIP” switch .................................................................................................P.87
Camera switch
*1, 2
Heated steering wheel switch*1..........................................................................P.318
*1: If equipped
*2: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
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331-1. For safe use
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For safety and security
RX450hL: Rear side airbags (outboard second-row seats)
Your vehicle is equipped with ADVANCED AIRBAGS designed based on the US
motor vehicle safety standards (FMVSS208). The airbag sensor assembly (ECU)
controls airbag deployment based on information obtained from the sensors etc.
shown in the system components diagram above. This information includes crash
severity and occupant information. As the airbags deploy, a chemical reaction in
the inflators quickly fills the airbags with no n-toxic gas to help restrain the motion of
the occupants.
■If the SRS airbags deploy (inflate)
●Slight abrasions, burns, bruising etc., may
be sustained from SRS airbags, due to the
extremely high speed deployment (infla-
tion) by hot gases.
●A loud noise and white powder will be
emitted.
●Parts of the airbag module (steering
wheel hub, airbag cover and inflator) as
well as the front seat s, parts of the front
and rear pillars, and roof side rails, may
be hot for several minutes. The airbag
itself may also be hot.
●The windshield may crack.
●The hybrid system will be stopped and
fuel supply to the engine will be stopped.
(  P.72)
●All of the doors will be unlocked.
( P.110)
●The brakes and stop lights will be con-
trolled automatically. ( P.284)
●The interior lights will turn on automati-
cally. ( P.322)
●The emergency flashers will turn on auto-
matically. ( P.410)
●For Lexus Enform Safety Connect sub-
scribers, if any of the following situations
occur, the system is designed to send an
emergency call to the response center,
notifying them of the vehicle’s location
(without needing to push the “SOS” but-
ton) and an agent will attempt to speak
with the occupants to ascertain the level
of emergency and assi stance required. If
the occupants are unable to communi-
cate, the agent automatically treats the
call as an emergency and helps to dis- patch the necessary emergency services.
(
 P.60)
• An SRS airbag is deployed.
• A seat belt pretensioner is activated.
• The vehicle is involved in a severe rear-end collision.
■SRS airbag deployment conditions (SRS
front airbags)
●The SRS front airbags will deploy in the
event of an impact that exceeds the set
threshold level (the level of force corre-
sponding to an approximately 12 - 18
mph [20 - 30 km/h] frontal collision with
a fixed wall that does not move or
deform).
However, this threshol d velocity will be
considerably higher in the following situa-
tions:
• If the vehicle strikes an object, such as a parked vehicle or sign pole, which can
move or deform on impact
• If the vehicle is involved in an underride collision, such as a collision in which the
front of the vehicle “underrides”, or goes
under, the bed of a truck
●Depending on the type of collision, it is
possible that only the seat belt preten-
sioners will activate.
●The SRS seat cushion airbag on the front
passenger seat will not operate if the
occupant is not wearing a seat belt.
■SRS airbag deployment conditions (SRS
side and curtain shield airbags)
●The SRS side and curtain shield airbags
will deploy in the event of an impact that
exceeds the set threshold level (the level
of force corresponding to the impact
force produced by an approximately
3300 lb. [1500 kg] vehicle colliding with

641-3. Lexus Enform
location.
■Stolen Vehicle Location
If your vehicle is stolen, Safety Connect
can work with local authorities to assist
them in locating and recovering the
vehicle. After filing a police report, call
the Safety Connect response center at
1-800-25-LEXUS
(1-800-255-3987) in the United
States, 1-877-539-8777 in Puerto
Rico or 1-800-265- 3987 in Canada,
and follow the prompts for Safety Con-
nect to initiate this service.
In addition to assisting law enforce-
ment with recovery of a stolen vehicle,
Safety-Connect-equipped vehicle
location data may, under certain cir-
cumstances, be shared with third par-
ties to locate your vehicle. Further
information is available at Lexus.com.
■Emergency Assistance Button
(“SOS”)
In the event of an emergency on the
road, push the “SOS” button to reach
the Safety Connect response center.
The answering agent will determine
your vehicle’s location, assess the
emergency, and dispatch the neces-
sary assistance required.
If you accidentally press the “SOS” button,
tell the response-center agent that you are
not experiencing an emergency.
■Enhanced Roadside Assistance
Enhanced Roadside Assistance adds
GPS data to the already included war-
ranty-based Lexus roadside service.
Subscribers can press the “SOS” but-
ton to reach a Safety Connect response-center agent, who can help
with a wide range of needs, such as:
towing, flat tire, fuel delivery, etc. For a
description of the Roadside Assistance
services and their limitations, please
see the Safety Connect Terms and
Conditions, which are available at
Lexus.com.
Important! Read this information about
exposure to radio frequency signals
before using Safety Connect;
The Safety Connect system installed in
your vehicle is a low-power radio trans-
mitter and receiver. It receives and also
sends out radio frequency (RF) signals.
In August 1996, the Federal Commu-
nications Commission (FCC) adopted
RF exposure guidelines with safety lev-
els for mobile wireless phones. Those
guidelines are consistent with the
safety standards previously set by the
following U.S. and international stan-
dards bodies.

ANSI (American National Stan-
dards Institute) C95.1 [1992]
 NCRP (National Council on Radia-
tion Protection and Measurement)
Report 86 [1986]
 ICNIRP (International Commission
on Non-Ionizing Radiation Protec-
tion) [1996]
Those standards were based on com-
prehensive and periodic evaluations of
the relevant scientific literature. Over
Safety information for Safety
Connect