
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 

3TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9
Automatic transmission..............138
Turn signal lever............................. 142
Parking brake ................................. 143
Brake Hold....................................... 146
ASC (Active Sound Control) .. 147
4-3. Operating the lights and wipers Headlight switch ............................ 149
AHB (Automatic High Beam) ............................................................. 151
Windshield wipers and washer ............................................................ 154
4-4. Refueling Opening the fuel tank cap.......... 161
4-5. Using the driving support systems Lexus Safety System + 2.5 ........ 164
PCS (Pre-Collision System)..... 170
LTA (Lane Tracing Assist)......... 180
RSA (Road Sign Assist) .............. 189
Dynamic radar crui se control with 
full-speed range.......................... 192
BSM (Blind Spot Monitor) ....... 202
PKSA (Parking Support Alert) ........................................................... 208
Intuitive parking assist ................. 210
RCTA (Rear Cross Traffic Alert)  function ........................................... 216
PKSB (Parking Support Brake) ............................................................ 221
Parking Support Brake function  (static objects) ............................ 226
Parking Support Brake function  (rear-crossing vehicles).......... 232
Driving mode select switch...... 236
Driving assist systems ................. 238
4-6. Driving tips Winter driving tips ....................... 2435-1. Remote Touch/Display
Remote Touch............................... 248
Center Display.............................. 250
5-2. Using the air conditioning system  and defogger
Automatic air conditioning system.......................................................... 253
Heated steering wheel/seat heat- ers/seat ventilators..................... 261
5-3. Using the interior lights Interior lights list ........................... 263
5-4. Using the storage features List of storage features .............. 266
Trunk features ............................... 268
5-5. Using the other interior features Other interior features .............. 270
Garage door opener ................. 273
6-1. Maintenance and care Cleaning and protecting the vehi-cle exterior................................... 280
Cleaning and protecting the vehi- cle interior .................................... 283
6-2. Maintenance Maintenance re quirements .....286
General maintenance................ 287
Emission inspection and mainte- nance (I/M) program s
............290
6-3. Do-it-yourself maintenance Do-it-yourself service precautions............................................................ 291
Hood ................................................. 293
5Interior features
6Maintenance and care 

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 

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 

491-2. Child safety
1
For safety and security
■Child restraint LATCH anchors
LATCH anchors are provided for the 
outboard rear seat. (Buttons displaying 
the location of the anchors are 
attached to the seats.)
■When installing in the rear out-
board seats
Install the child restraint system in 
accordance to the operation manual 
enclosed with the child restraint sys-
tem.
1 Adjust the seat
If there is a gap between the child seat and 
the seatback, adjust the seatback angle 
until good contact is achieved.
WARNING
●When a booster seat  is installed, 
always ensure that th e shoulder belt is 
positioned across the center of the 
child’s shoulder. The belt should be 
kept away from the child’s neck, but 
not so that it could fall off the child’s 
shoulder.
●Follow all installation instructions pro-
vided by the child restraint system 
manufacturer.
●When securing some  types of child 
restraint systems in rear seats, it may 
not be possible to properly use the 
seat belts in position s next to the child 
restraint without inte rfering with it or 
affecting seat belt effectiveness. Be 
sure your seat belt fits snugly across 
your shoulder and low on your hips. If it 
does not, or if it interferes with the 
child restraint, move to a different posi-
tion. Failure to do so may result in 
death or serious injury.
●When installing a child restraint system 
in the rear center seat, adjust both seat 
cushions to the same position and 
align both seatbacks at the same 
angle. Otherwise, the child restraint 
system cannot be securely restrained 
and this may cause death or serious 
injuries in the event  of sudden braking, 
sudden swerving or an accident.
●If the seat is adju sted, reconfirm the 
security of the child restraint system.
■When installing a booster seat
To prevent the belt from going into ALR 
lock mode, do not fully extend the shoul-
der belt. ALR mode causes the belt to 
tighten only. This could cause injury or 
discomfort to the child. (
P.26)
■Do not use a seat belt extender
If a seat belt extender is used when 
installing a child restra int system, the seat 
belt will not securely hold the child 
restraint system, which could cause 
death or serious injury to the child or 
other passengers in the event of sudden 
braking, sudden swerving or an accident.
Child restraint system fixed with 
a child restraint LATCH anchor 

65
2
2
Vehicle status information and indicators
Vehicle status informationand indicators
.2-1. Instrument cluster
Warning lights and indicators........................................................... 66
Gauges and meters ...................... 71
Multi-information display.......... 76
Fuel consumption information ........................................................... 83 

662-1. Instrument cluster
2-1.Instrument cluster
For the purpose of explanation, the following illustrations display all warning lights 
and indicators illuminated.
Except F SPORT models
F SPORT models
The location of warning lights and indicators may differ depending on the selected main 
meter location.
Warning lights and indicators
The warning lights and indicators on th e instrument cluster, center panel and 
outside rear view mirrors inform the driver  of the status of the vehicle’s various 
systems.
Warning lights and indicators displayed on the instrument cluster