2021 LEXUS IS300 engine

IS350AWD-IS350-IS300AWD-IS300_U
1
2
3
4
5
6
7
8
9
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 engine, 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

2TABLE OF CONTENTS
For your information ......................................5
Reading this manual ....................................... 9
How to search ............................................... 10
Pictorial index .................................................. 11
1-1. For safe use Before driving .................................... 22
For safe driving.................................. 23
Seat belts ............................................. 24
SRS airbags ....................................... 28
Front passenger occupant classifi- cation system ................................. 36
Exhaust gas precautions .............. 40
1-2. Child safety Riding with children.......................... 41
Child restraint systems ................... 41
1-3. Lexus Enform Lexus Enform Safety Connect .. 54
1-4. Theft deterrent system Engine immobilizer system ......... 60
Alarm..................................................... 62
Theft prevention labels ................. 63
2-1. Instrument cluster Warning lights and indicators .... 66
Gauges and meters ......................... 71
Multi-information display............. 76
Fuel consumption information ... 833-1. Key information
Keys ...................................................... 88
3-2. Opening, closing and locking the doors and trunk
Doors .................................................... 92
Trunk ..................................................... 96
Smart access system with push-but- ton start ............................................. 99
3-3. Adjusting the seats Front seats........................................ 106
Rear seats......................................... 107
Driving position memory ........... 108
Head restraints ................................. 111
3-4. Adjusting the steering wheel and mirrors
Steering wheel ................................. 113
Inside rear view mirror ................. 114
Outside rear view mirrors........... 116
3-5. Opening, closing the windows and moon roof
Power windows .............................. 118
Moon roof ........................................ 120
4-1. Before driving Driving the vehicle......................... 124
Cargo and luggage...................... 130
Vehicle load limits.......................... 132
Trailer towing................................... 132
Dinghy towing ................................ 133
4-2. Driving procedures Engine (ignitio n) switch ............... 134
1For safety and security
2Vehicle status information and
indicators
3Before driving
4Driving

4TABLE OF CONTENTS
Positioning a floor jack...............293
Engine compartment.................. 295
Tires ................................................... 303
Tire inflation pressure .................. 312
Wheels............................................... 313
Air conditioning filter...................315
Electronic key battery ................. 316
Checking and replacing fuses ............................................................ 318
Headlight aim................................. 320
Light bulbs ........................................ 321
7-1. Essential information Emergency flashers..................... 328
If your vehicle has to be stopped in an emergency ............................. 328
If the vehicle is trapped in rising water............................................... 329
7-2. Steps to take in an emergency If your vehicle needs to be towed............................................................ 331
If you think something is wrong ........................................................... 335
Fuel pump shut off system ........ 336
If a warning light turns on or a warn- ing buzzer sounds ..................... 337
If a warning message is displayed ........................................................... 346
If you have a flat tire..................... 349
If the engine wi ll not start .......... 357
If you lose your keys .................... 358
If the fuel filler door cannot be opened........................................... 359
If the electronic key does not oper- ate properly ................................. 359If the vehicle battery is discharged
........................................................... 361
If your vehicle overheats ........... 365
If the vehicle becomes stuck ... 368
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 372
Fuel information............................ 382
Tire information ............................ 384
8-2. Customization Customizable features .............. 394
8-3. Initialization Items to initialize ........................... 404
9-1. For owners Reporting safety defects for U.S. owners ........................................... 406
Seat belt instructions for Canadian owners (in French) ................... 406
SRS airbag instructions for Cana- dian owners (in French) ......... 408
Headlight aim instructions for Canadian owners (in French)............................................................ 414
What to do if... (Troubleshooting) ........................................................... 418
Alphabetical Index ........................ 421
7When trouble arises
8Vehicle specifications
9For owners
Index

5
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 equip-
ment.
Approximately five hours after the
engine 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 malfunction.
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.
Also, remodeling like this will have an
effect on advanced safety equipment
such as Lexus Safety System + and
there is a danger that it will not work
properly or the danger that it may work
in situations where it should not be
working.
The installation of a mobile two-way
radio system in your vehicle could
affect electronic systems such as:

Multiport fuel injection sys-
tem/sequential multiport fuel injec-
tion system
 Lexus Safety System + 2.5
 Anti-lock brake system
 Vehicle dynamics integrated man-
agement
 SRS airbag system
 Seat belt pretensioner system
For your information
Main Owner’s Manual
Noise from under vehicle after
turning off the engine
Accessories, spare parts and
modification of your Lexus
Installation of a mobile two-way
radio system

6
Be sure to check with your Lexus
dealer for precautionary measures or
special instructions regarding installa-
tion of a mobile two-way radio system.
The vehicle is equipped with sophisti-
cated computers that will record cer-
tain data, such as:
• Engine speed/Electric motor speed (traction motor speed)
• Accelerator status
•Brake status
• Vehicle speed
• Operation status of the driving assist systems
• Images from the front camera (avail- able only when certain safety sys-
tems are activated, which varies
depending on the vehicle specifica-
tions).
The recorded data varies according to
the vehicle grade level and options
with which it is equipped.
These computers do not record con-
versations or sounds, and only record
images outside of the vehicle in certain
situations.
 Data Transmission
Your vehicle may transmit the data
recorded in these computers to Lexus
without notification to you.
Data usage
Lexus may use the data recorded in this
computer to diagnose malfunctions, con-
duct research and development, and
improve quality.
Lexus will not disclose the recorded data to a third party except:
• With the consent of the vehicle owner or
with the consent of the lessee if the vehi-
cle is leased
• In response to an official request by the police, a court of law or a government
agency
• For use by Lexus in a lawsuit
• For research purposes where the data is not tied to a specific vehicle or vehicle
owner
 Recorded image information can be
erased by your Lexus dealer.
The image recording function can
be disabled. However, if the function
is disabled, data from when the sys-
tem operates will not be available.
 To learn more abou t the vehicle data
collected, used and shared by
Lexus, please visit
www.lexus.com/privacyvts/
.
If your Lexus has Lexus Enform and if
you have subscribed to those services,
please refer to the Lexus Enform
Telematics Subscription Service
Agreement for information on data
collected and its usage.
To learn more about the vehicle data
collected, used and shared by Lexus,
please visit
www.lexus.com/privacyvts/
.
Vehicle data recording
Usage of data collected through
Lexus Enform (U.S.mainland on-
ly)

12Pictorial index
Precautions for winter season ..................................................................................... P.243
To prevent freezing (windshield wiper de-icer)
*................................................. P.259
Precautions for car wash ................................................................................................ P.281
Fuel filler door ........................................................................................................... P.16 1
Refueling method ............................................................................................................... .P.161
Fuel type/fuel tank capacity ...... ................................................................................... P.374
Tires.......................................................................................................................... .P.303
Tire size/inflation pressure ............................................................................... P.303, 379
Winter tires/tire chains .................................................................................................. P.243
Checking/rotation/tire pressure warning system..............................................P.303
Coping with flat tires........................................................................................................ P .349
Hood ..........................................................................................................................P.293
Opening ........................................................................................................................ ....... P.293
Engine oil ..................................................................................................................... ......... P.374
Coping with overheating ............................................................................................... P.365
Warning messages .......................................................................................................... P.346
Headlights ................................................................................................................. P.14 9
Turn signal lights ...................................................................................................... P.142
Parking lights/daytime running lights............................................................... P.149
Side marker lights ................................................................................................... P.149
Tail lights .................................................................................................................... P.149
Stop lights
Tail lights .................................................................................................................... P.149
Back-up lights
Shifting the shift lever to R .............................................................................................. P.13 9
License plate lights ................................................................................................. P.149
*:If equipped
Light bulbs of the exterior lights for driving
(Replacing method: P.321, Watts: P.381)
E
F
G
H
I
J
K
L
M
N
O

13Pictorial index
■Instrument panel
Engine switch ........................................................................................................... P.134
Starting the engine/changing the modes ................................................................ P.134
Emergency stop of the engine ........................ ............................................................P.328
When the engine will not start ..................................................................................... P.357
Warning messages .......................................................................................................... P.346
Shift lever...................................................................................................................P .138
Changing the shift position ............................................................................................ P.139
Precautions for towing .................................................................................................... P.331
When the shift lever does not move .......................................................................... P.139
Meters ......................................................................................................................... .. P.71
Reading the meters/adjusting the instrument panel light..................................... P.71
Warning lights/indicator lights ...................................................................................... P.66
When a warning light comes on ................................................................................. P.337
Multi-information display ....................................................................................... P.76
Display ........................................................................................................................ .............. P.76
When a warning message is displayed.................................................................... P.346A
B
C
D

21
1
1
For safety and security
For safety and security
.1-1. For safe useBefore driving ................................. 22
For safe driving.............................. 23
Seat belts .......................................... 24
SRS airbags .................................... 28
Front passenger occupant classifi- cation system .............................. 36
Exhaust gas precautions ........... 40
1-2. Child safety Riding with children....................... 41
Child restraint systems ................ 41
1-3. Lexus Enform Lexus Enform Safety Connect........................................................... 54
1-4. Theft deterrent system Engine immobilizer system ...... 60
Alarm................................................. 62
Theft prevention labels .............. 63