lock Lexus IS300 2018 Owner's Manual / LEXUS 2018 IS300,IS350 OWNER'S MANUAL (OM53E34U)

TABLE OF CONTENTS2
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
For your information................................... 8
Reading this manual................................... 12
How to search ..............................................13
Pictorial index............................................... 14
1-1. For safe use
Before driving ................................ 26
For safe driving .............................. 28
Seat belts .......................................... 30
SRS airbags ..................................... 36
Front passenger occupant classification system ................. 46
Safety information for children .......................................... 52
Child restraint systems ............... 53
Installing child restraints............. 57
Exhaust gas precautions.............67
1-2. Theft deterrent system Engine immobilizer system....... 68
Alarm ................................................... 71
Theft prevention labels (for U.S.A.).....................................74
2. Instrument cluster Warning lights and indicators........................................76
Gauges and meters .......................81
Multi-information display .......... 86
Fuel consumption information ................................. 103 3-1. Key information
Keys .................................................... 110
3-2. Opening, closing and locking the doors and trunk
Doors ................................................. 116
Trunk ................................................. 122
Smart access system with push-button start....................... 127
3-3. Adjusting the seats Front seats ......................................135
Rear seats ....................................... 137
Driving position memory..........139
Head restraints .............................144
3-4. Adjusting the steering wheel and mirrors
Steering wheel .............................. 147
Inside rear view mirror ..............149
Outside rear view mirrors ........ 151
3-5. Opening, closing the windows and moon roof
Power windows ............................154
Moon roof...................................... 158
1For safety and security
2Instrument cluster
3Operation of each
component

TABLE OF CONTENTS6
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
6-5. Using the other interior
features
Other interior features .............427 • Sun visors .................................427
• Vanity mirrors ........................427
• Clock .........................................427
• Power outlet .......................... 428
• Armrest.................................... 429
• Rear sunshade ...................... 429
• Assist grips ...............................431
• Coat hooks...............................431
Garage door opener ............... 432
Compass ....................................... 439
LEXUS Enform Safety Connect...................................... 443
LEXUS Enform Remote ......... 448
LEXUS Enform Service Connect...................................... 449
7-1. Maintenance and care Cleaning and protecting the vehicle exterior ................ 452
Cleaning and protecting the vehicle interior.................. 456
7-2. Maintenance Maintenance requirements ............................ 459
General mainte nance.............. 462
Emission inspection and maintenance (I/M)
programs.................................... 465 7-3. Do-it-yourself maintenance
Do-it-yourself service precautions ............................... 466
Hood ............................................... 468
Positioning a floor jack ............ 469
Engine compartment ................. 471
Tires ................................................. 483
Tire inflation pressure .............. 493
Wheels ........................................... 496
Air conditio ning filter ............... 498
Electronic key battery..............500
Checking and replacing fuses.............................................. 502
Light bulbs ....................................505
8-1. Essential information Emergency flashers ....................512
If your vehicle has to be stopped in an emergency .....513
8-2. Steps to take in an emergency
If your vehicle needs to be towed .............................................514
If you think something is wrong........................................... 520
Fuel pump shut off system........521
If a warning light turns on or a warning buzzer
sounds ......................................... 522
If a warning message is displayed .................................... 529
If you have a flat tire .................. 556
If the engine will not start ........ 567
7Maintenance and care
8When trouble arises

8
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Please note that this manual applies to all
models and explains all equipment, including
options. Therefore, you may find some expl anations for equipment not installed on your
vehicle.
All specifications provided in this manual are current at the time of printing. However,
because of the Lexus policy of continual pr oduct improvement, we reserve the right to
make changes at any time without notice.
Depending on specifications, th e vehicle shown in the illustrations may differ from your
vehicle in terms of color and equipment.
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 vehicles are cur-
rently available in the market. You should kn ow that Toyota does not warrant these prod-
ucts and is not responsible fo r their performance, repair, or replacement, or for any
damage 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 violate governmental regulations. In addition, damage or performance problems
resulting from the modification may not be covered under warranty.
The installation of a mobile two-way radio system in your vehicle could affect electronic
systems such as:
●Multiport fuel injection system/seque ntial multiport fuel injection system
●Lexus Safety System+
●Anti-lock brake system
●Vehicle dynamics integrated management
●SRS airbag system
●Seat belt pretensioner system
Be sure to check with your Lexus dealer for precautionary measures or special instruc-
tions regarding installation of a mobile two-way radio 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

14
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Pictorial index
Pictorial index
■Exterior
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . P. 116
Locking/unlocking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 116
Opening/closing the side windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 154
Locking/unlocking by using the me chanical key . . . . . . . . . . . . . . . . . . . . . . . P. 569
Warning lights/warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 524, 531
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 122
Opening from inside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 1 22
Opening from outside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 122
Opening by using the mechanical key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 569
Warning lights/warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 524, 532
Outside rear view mirrors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 151
Adjusting the mirror angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 151
Folding the mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 151
Driving position memory
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 139
Defogging the mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 41 2
1
2
3

17Pictorial index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Multi-information display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 86
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 86
When the warning messages are displayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 529
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 192
Applying/releasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 192
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 298
Warning buzzer/message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 529
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 190
Headlight switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 194
Headlights/parking lights/tail lights/daytime running lights . . . . . . . . . . . . . P. 194
Windshield wiper and washer switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 48 2
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 545
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 512
Trunk opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 122
Hood lock release lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 468
Tilt and telescopic steering control switch
*1 . . . . . . . . . . . . . . . . . . . . . . . P. 147
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 147
Driving position memory*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 139
Tilt and telescopic steering lock release lever*1 . . . . . . . . . . . . . . . . . . . P. 147
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 147
Air conditioning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 407
Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 407
Rear window defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 412
Audio system*2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 304
Audio system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 304
Hands-free system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 3 63
Trunk opener main switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 123
*1: If equipped
*2: For vehicles with a navigation system, refer to “NAVIGATION SYSTEM OWNER’S
MANUAL”.
4
5
6
7
8
9
10
11
12
13
14
15

19Pictorial index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Driving position memory switches*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 139
Outside rear view mirror switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 151
Door lock switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 118
Power window switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 154
Window lock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 154
Tire pressure warning reset switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 4851
2
3
4
5
6
*: If equipped

22Pictorial index
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■Interior
SRS airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 36
Floor mats. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 26
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 135
Head restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 144
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 30
Console box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 422
Inside lock buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 11 8
Cup holders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 423
Assist grips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 4311
2
3
4
5
6
7
8
9

281-1. For safe use
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Adjust the angle of the seatback so
that you are sitting straight up and so
that you do not have to lean forward
to steer. (→P. 135)
Adjust the seat so that you can
depress the pedals fully and so that
your arms bend slightly at the elbow
when gripping the steering wheel.
(→ P. 135)
Lock the head restraint in place with th e center of the head restraint closest to
the top of your ears. ( →P. 144)
Wear the seat belt correctly. ( →P. 30)
Make sure that all occupants are wearing their seat belts before driving the vehi-
cle. ( →P. 30)
Use a child restraint system appropriate for the child until the child becomes
large enough to properly wear the vehicle’s seat belt. ( →P. 53)
For safe driving
For safe driving, adjust the seat and mirror to an appropriate position before
driving.
Correct driving posture
1
2
Correct use of the seat belts
3
4

291-1. For safe use
1
For safety and security
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
Make sure that you can see backward clearly by adjusting the inside and outside
rear view mirrors properly. (→P. 149, 151)
Adjusting the mirrors
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
●Do not adjust the position of the driver’s seat while driving.
Doing so could cause the driver to lose control of the vehicle.
●Do not place a cushion between the dr iver or passenger and the seatback.
A cushion may prevent correct posture from being achieved, and reduce the effec-
tiveness of the seat be lt and head restraint.
●Do not place anything under the front seats.
Objects placed under the fr ont seats may become jammed in the seat tracks and stop
the seat from locking in plac e. This may lead to an accident and the adjustment mech-
anism may also be damaged.
●Always observe the legal speed limi t when driving on public roads.
●When driving over long distances, take regular breaks before you start to feel tired.
Also, if you feel tired or sleepy while drivin g, do not force yourself to continue driving
and take a break immediately.

321-1. For safe use
IS350 AWD/IS350/IS300 AWD/IS300_U(OM53E34U)
■After the rear center seat belt has been used
■Emergency locking retractor (ELR)
The retractor will lock the belt during a sudden stop or on impact. It may also lock if you
lean forward too quickly. A slow, easy motion w ill allow the belt to extend so that you can
move around fully.
■Automatic locking retractor (ALR)
When a passenger’s shoulder belt is completely extended and then retracted even
slightly, the belt is locked in that position and cannot be extended. This feature is used to
hold a child restraint system (CRS) firmly. To fr ee the belt again, fully retract the belt and
then pull the belt out once more. ( →P. 57)
■Child seat belt usage
The seat belts of your vehicle were principally designed for persons of adult size.
●Use a child restraint system appropriate fo r the child, until the child becomes large
enough to properly wear the vehicle’s seat belt. ( →P. 53)
●When the child becomes large enough to properly wear the vehicle’s seat belt, follow
the instructions regardin g seat belt usage. (→P. 30)
■Replacing the belt after the pr etensioner has been activated
If the vehicle is involved in multiple collisions, the pretensioner will activate for the first
collision, but will not activate for th e second or subsequent collisions.
■Seat belt extender Stow the buckle as shown.
If your seat belts cannot be fastened securely
because they are not long enough, a personal-
ized seat belt extender is available from your
Lexus dealer free of charge.