
TABLE OF CONTENTS2
IS350/300/200t_U (OM53D18U)
For your information ................................... 8
Reading this manual................................... 12
How to search ..............................................13
Pictorial index ............................................... 14
1-1. For safe useBefore driving................................. 26
For safety drive............................... 28
Seat belts .......................................... 30
SRS airbags ..................................... 36
Front passenger occupant classification system...................47
Safety information for  children .......................................... 53
Child restraint systems ............... 54
Installing child restraints............. 58
Exhaust gas precautions ............ 68
1-2.  Theft deterrent system Engine immobilizer system....... 69
Alarm ................................................... 71
Theft prevention labels  ...............73
2. Instrument cluster Warning lights and indicators........................................ 76
Gauges and meters .......................81
Multi-information display .......... 86
Fuel consumption  information ................................... 93 3-1. Key information
Keys .................................................. 100
3-2. Opening, closing and  locking the doors and trunk
Doors ............................................... 105
Trunk.....................................................111
Smart access system with  push-button start ....................... 116
3-3. Adjusting the seats Front seats.......................................123
Rear seats........................................ 124
Driving position memory.......... 126
Head restraints .............................. 131
3-4. Adjusting the steering  wheel and mirrors
Steering wheel ..............................134
Inside rear view mirror ..............136
Outside rear view mirrors....... 138
3-5. Opening, closing the  windows and moon roof
Power windows.............................. 141
Moon roof ....................................... 144
1For safety and security
2Instrument cluster
3Operation of each 
component 

3
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9 8
7 5 4
3
2
10
IS350/300/200t_U (OM53D18U)
6
4-1. Before driving Driving the vehicle ..................... 150
Cargo and luggage.................... 158
Vehicle load limits ......................... 161
Trailer towing ................................. 162
Dinghy towing ...............................163
4-2. Driving procedures Engine (ign ition) switch .............164
Automatic transmission ............169
Turn signal lever ............................ 175
Parking brake ................................ 177
4-3.  Operating the lights and  wipers
Headlight switch .......................... 178
Automatic High Beam................ 181
Fog light switch ............................ 186
Windshield wipers and  washer ...........................................187
4-4. Refueling Opening the fuel tank cap .......194 4-5.  Using the driving support 
systems
Cruise control .............................. 198
Dynamic radar cruise  control ......................................... 202
LDA  (Lane Departure Alert).......... 217
Intuitive parking assist .............. 223
Lexus parking  assist monitor............................ 230
Driving mode select  switch ............................................246
Driving assist systems ...............249
PCS  (Pre-Collision System) ......... 255
BSM  (Blind Spot Monitor) ..............262
• The Blind Spot Monitor  function .................................... 265
• The Rear Cross Traffic  Alert function ......................... 267
4-6. Driving tips Winter driving tips ......................270
4Driving 

TABLE OF CONTENTS6
IS350/300/200t_U (OM53D18U)
6-4.  Using the other interior features
Other interior features ............ 387 • Sun visors ................................ 387
• Vanity mirrors ........................ 387
• Clock ........................................ 387
• Power outlet ...........................388
• Armrest.................................... 389
• Rear sunshade ...................... 389
• Assist grips .............................. 391
• Coat hooks .............................. 391
Garage door opener ............... 392
Compass ........................................397
LEXUS Enform Safety  Connect......................................400
7-1.  Maintenance and care Cleaning and protecting the vehicle exterior ................ 406
Cleaning and protecting  the vehicle inte rior.................. 409
7-2. Maintenance Maintenance requirements .............................. 412
General maintenance................415
Emission inspection and  maintenance (I/M) 
programs ..................................... 418 7-3. Do-it-yourself maintenance
Do-it-yourself service precautions..................................419
Hood ................................................. 421
Positioning a floor jack..............422
Engine compartment ............... 423
Tires.................................................. 434
Tire inflation pressure ............... 443
Wheels ........................................... 446
Air conditioning  filter ............... 448
Electronic key battery.............. 450
Checking and replacing  fuses...............................................452
Light bulbs .................................... 455
8-1. Essential information Emergency flashers .................. 466
If your vehicle has to be stopped 
in an emergency.......................467
8-2. Steps to take  in an emergency
If your vehicle needs  to be towed................................ 468
If you think something  is wrong........................................ 474
Fuel pump shut off system .......475
If a warning light turns  on or a warning buzzer 
sounds .......................................... 476
If a warning message  is displayed ................................ 482
If you have a flat tire .................. 496
If the engine will not start ........ 506
7Maintenance and care
8When trouble arises 

7
1
9 8
7 5 4
3
2
10
IS350/300/200t_U (OM53D18U)
6
If the shift lever cannot  be shifted from P .....................508
If the electronic key does  not operate properly .............509
If the vehicle battery  is discharged ...............................512
If your vehicle overheats ...........516
If the vehicle becomes  stuck ............................................. 520
9-1. Specifications Maintenance data (fuel, oil level, etc.) ...................524
Fuel information.......................... 537
Tire information........................... 540
9-2. Customization Customizable features ............ 552
9-3. Initialization Items to initialize ........................... 561 Reporting safety defects for 
U.S. owners............................................ 564
Seat belt instructions for  Canadian owners (in French) ........ 565
SRS airbag instructions for  Canadian owners (in French) ........ 566
What to do if...  (Troubleshooting) ................................ 576
Alphabetical inde x ................................580
9Vehicle specifications
10For owners
Index
For vehicles with a navigation system, refer to the “NAVIGATION SYSTEM
OWNER’S MANUAL” for information rega rding the equipment listed below.
• Navigation system
• Audio/video system•Intuitive parking assist
•Rear view monitor system
Lexus Enform connected services consists of five products:
• Lexus Enform Safety Connect
• Lexus Enform Service Connect
• Lexus Enform Remote
• Lexus Enform Destinations
• Lexus Enform App Suite
For availability and to learn more, visit http://www.lexus.com/enform 

8
IS350/300/200t_U (OM53D18U)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, the vehicle show n 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 know that Toyota does not warrant these prod-
ucts and is not responsible for 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 sy stem in your vehicle could affect electronic
systems such as: 
●Multiport fuel injection system/sequential multiport fuel injection system
●Dynamic radar cruise control system
●Cruise control system
●Anti-lock brake system
●Vehicle dynamics in tegrated management
●SRS airbag system
●Seat belt pretensioner system
Be sure to check with your Lexus dealer fo r precautionary measures or special instruc-
tions regarding insta llation 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 

15Pictorial index
IS350/300/200t_U (OM53D18U)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 187
Precautions against winter season  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 270
To prevent freezing (windshield wiper de-icer)
* . . . . . . . . . . . . . . . . . . . . . . . . P. 372
Precautions against car wash  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 407
Fuel filler door  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  .P. 194
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P . 194
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 526
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . P. 434
Tire size/inflation pressure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 534
Winter tires/tire chain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P.  270
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . . .P. 434
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P.  496
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 421
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . .  P. 421
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . P. 527
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 51 6
Warning messages  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 484
Headlights/parking lights/daytime running ligh ts  . . . . . . . . . . . . . . . . . . . P. 178
Fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 186
Turn signal lights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 175
Tail lights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . P. 178
Stop lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . .  P. 150 
License plate lights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 17 8
Back-up lights
Shifting the shift lever to R  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  P. 16 9
Side marker lights  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 178
4
5
6
7
Light bulbs of the exterior lights for driving(Replacing method: P. 455, Watts: P. 536)
*: If equipped
8
9
10
11
12
13
14
15 

75
Instrument cluster2
IS350/300/200t_U (OM53D18U)
2. Instrument clusterWarning lights and indicators ........................................ 76
Gauges and meters ...................... 81
Multi-information display .......... 86
Fuel consumption  information ................................... 93 

772. Instrument cluster
2
Instrument cluster
IS350/300/200t_U (OM53D18U)
Warning lights inform the driver of malfunctions in the indicated vehicle systems.
Warning lights
*1
(U.S.A.)
Brake system warning light
( P.  4 76 )
*1, 2
(if equipped)
Pre-collision system warn-
ing light 
( P. 477)
*1
(Canada)
Brake system warning light
( P.  4 76 )*1
Slip indicator ( P. 477)
*1Charging system warning
light ( P.  4 76 )*1Automatic headlight level-
ing system warning light
( P. 477)
*1
(U.S.A.)
Malfunction indicator lamp
( P.  4 76 )*1Open door warning light 
( P. 477)
*1
(Canada)
Malfunction indicator lamp
( P.  4 76 )Low fuel level warning light
( P. 477)
*1SRS warning light 
( P.  4 76 )Seat belt reminder light
( P. 477)
*1
(U.S.A.)
ABS warning light 
( P.  4 76 )*1Master warning light 
( P. 477)
*1
(Canada)
ABS warning light 
( P.  4 76 )*1Tire pressure warning light 
( P.  4 7 8 )
*1Electric power steering sys-
tem warning light
( P. 477)