fuel Lexus IS300 2019 Owner's Manual / 2019 IS300,IS350 OWNER'S MANUAL (OM53E71U)

TABLE OF CONTENTS2
IS350 AWD/IS350/IS300 AWD/IS300_U
For your information................................... 8
Reading this manual................................... 12
How to search ..............................................13
Pictorial index............................................... 14
1-1. For safe useBefore 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. Lexus Enform LEXUS Enform Safety Connect......................................... 68
LEXUS Enform Remote .............74
LEXUS Enform Service Connect......................................... 75
1-3. Theft deterrent system Engine immobilizer system........76
Alarm ................................................. 78
Theft prevention labels .................81 2. Instrument cluster
Warning lights and indicators....................................... 84
Gauges and meters ..................... 89
Multi-information display .......... 94
Fuel consumption information .....................................111
3-1. Key information Keys .................................................... 118
3-2. Opening, closing and locking the doors and
trunk
Doors ................................................ 124
Trunk ................................................ 130
Smart access system with push-button start.......................135
3-3. Adjusting the seats Front seats ......................................143
Rear seats .......................................145
Driving position memory.......... 147
Head restraints .............................152
3-4. Adjusting the steering wheel and mirrors
Steering wheel ............................. 155
Inside rear view mirror .............. 157
Outside rear view mirrors .......159
1For safety and security
2Instrument cluster
3Operation of each
component

3
1
9 8
7 5 4
3
2
10
IS350 AWD/IS350/IS300 AWD/IS300_U
6
3-5. Opening, closing the windows and moon roof
Power windows ............................162
Moon roof .......................................166
4-1. Before driving Driving the vehicle ...................... 172
Cargo and luggage ................... 180
Vehicle load limits ...................... 183
Trailer towing ............................... 184
Dinghy towing .............................. 185
4-2. Driving procedures Engine (ign ition) switch ............ 186
Automatic transmission ............. 191
Turn signal lever .......................... 198
Parking brake ..............................200
ASC (Active Sound Control) ........ 201
4-3. Operating the lights and wipers
Headlight switch ........................ 202
Automatic High Beam............. 206
Windshield wipers and washer .......................................... 210 4-4. Refueling
Opening the fuel tank cap ................................................. 218
4-5. Using the driving support systems
Lexus Safety System + ............. 222
PCS (Pre-Collision System) ......... 229
LDA (Lane Departure Alert with steering
control)........................................ 240
Dynamic radar cruise control ......................................... 248
Intuitive parking assist.............. 260
Lexus parking assist monitor........................................ 269
BSM (Blind Spot Monitor) ............. 285
• BSM function......................... 289
• RCTA function...................... 292
Driving mode select switch ........................................... 297
Driving assist systems ............... 301
4-6. Driving tips Winter driving tips..................... 306
4Driving

TABLE OF CONTENTS6
IS350 AWD/IS350/IS300 AWD/IS300_U
7-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 454
Cleaning and protecting the vehicle interior.................. 458
7-2. Maintenance Maintenance requirements ..............................461
General mainte nance.............. 464
Emission inspection and maintenance (I/M)
programs.................................... 467
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions................................ 468
Hood ............................................... 470
Positioning a floor jack .............. 471
Engine compartment ............... 473
Tires ................................................. 485
Tire inflation pressure .............. 495
Wheels ........................................... 498
Air conditioning filter ...............500
Electronic key battery.............. 502
Checking and replacing fuses.............................................. 504
Light bulbs .................................... 507 8-1. Essential information
Emergency flashers ....................514
If your vehicle has to be stopped in an
emergency ................................. 515
If the vehicle is trapped in rising water ..................................516
8-2. Steps to take in an emergency
If your vehicle needs to be towed ............................................. 517
If you think something is wrong........................................... 523
Fuel pump shut off system.......................................... 524
If a warning light turns on or a warning buzzer
sounds ......................................... 525
If a warning message is displayed .................................... 532
If you have a flat tire .................. 559
If the engine will not start ........ 570
If the electronic key does not operate properly ............. 572
If the vehicle battery is discharged................................. 575
If your vehicle overheats......... 579
If the vehicle becomes stuck .............................................583
7Maintenance and care8When trouble arises

7
1
9 8
7 5 4
3
2
10
IS350 AWD/IS350/IS300 AWD/IS300_U
6
9-1. Specifications Maintenance data (fuel, oil level, etc.) .................. 586
Fuel information .........................598
Tire information ........................... 601
9-2. Customization Customizable features ..............613
9-3. Initialization Items to initialize......................... 622 Reporting safety defects
for U.S. owners .................................... 624
Seat belt instructions for Canadian owners
(in French).............................................. 625
SRS airbag instructions for Canadian owners
(in French).............................................. 626
What to do if... (Troubleshooting)............................... 636
Alphabetical inde x ................................ 640
9Vehicle specifications10For owners
Index
For vehicles with a navigation system, refer to the “NAVIGATION SYSTEM
OWNER’S MANUAL” for information re garding the equipment listed below.
• Navigation system
• Audio/video system•Lexus Enform

8
IS350 AWD/IS350/IS300 AWD/IS300_UPlease 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

15Pictorial index
IS350 AWD/IS350/IS300 AWD/IS300_U
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 210
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 306
To prevent freezing (windshield wiper de-icer)
*. . . . . . . . . . . . . . . . . . . . . . . P. 422
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 456
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 218
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 218
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 589
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 485
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 595
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 30 6
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . P. 485
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 559
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 470
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 470
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 590
Coping with overheat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 579
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 535
Headlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Parking lights/daytime running lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 198
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Stop lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 172
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 1 91
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
Side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 202
4
5
6
7
Light bulbs of the exterior lights for driving(Replacing method: P. 507, Watts: P. 597)
*: If equipped
8
9
10
11
12
13
14

421-1. For safe use
IS350 AWD/IS350/IS300 AWD/IS300_U
■If the SRS airbags deploy (inflate)
●Slight abrasions, burns, bruising etc., may be sustained from SRS airbags, due to the
extremely high speed deployment (inflation) 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
seats, parts of the front and rear pillars, an d roof side rails may be hot for several min-
utes. The airbag itself may also be hot.
●The windshield may crack.
●All of the doors will be unlocked. ( P. 129)
●Fuel supply to the engi ne will be stopped. (P. 524)
●For Lexus Enform Safety Connect subscribers, if any of the following situations occur,
the system is designed to send an emerge ncy call to the response center, notifying
them of the vehicle’s location (without needing to push the “SOS” button) and an agent
will attempt to speak with the occupants to ascertain the level of emergency and assis-
tance required. If the occupants are unable to communicate, the agent automatically
treats the call as an emergency and helps to dispatch the necessary emergency ser-
vices. ( P. 68)
• An SRS airbag is deployed.
• A seat belt pretensioner is activated.
• The vehicle is involved in a severe rear-end collision.
■SRS airbag deployment cond itions (SRS front airbags)
●The SRS front airbags will deploy in the event of an impact that exceeds the set thresh-
old level (the level of force corresponding to an approximately 12 - 18 mph [20 - 30
km/h] frontal collision with a fixed wa ll that does not move or deform).
However, this threshold velocity will be cons iderably higher in the following situations:
• 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 possi ble that only the seat belt pretensioners will
activate.
●The SRS front airbags for the fr ont passenger will not activate if there is no passenger
sitting in the front passenger seat. However, the SRS front airbags for the front passen-
ger may deploy if luggage is put in the seat, even if the seat is unoccupied. ( P. 46)
■SRS airbag deployment conditions (S RS side and curtain shield airbags)
●The SRS side and curtain shield airbags w ill 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. [15 00 kg] vehicle colliding with the vehicle
cabin from a direction perpendicular to the vehicle orientation at an approximate
speed of 12 - 18 mph [20 - 30 km/h]).
●Both SRS curtain shield airbags will de ploy in the event of vehicle rollover.
●Both SRS curtain shield airbags will deploy in the event of a severe frontal collision.

721-2. Lexus Enform
IS350 AWD/IS350/IS300 AWD/IS300_U
■Enhanced Roadside Assistance
Enhanced Roadside Assistance adds GPS data to the already included war-
ranty-based Lexus roadside service.
Subscribers can press the “SOS” button 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 descript ion 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 informatio n before using Safety Connect.
■Exposure to radio frequency signals
The Safety Connect system installed in your vehicle is a low-power radio\
transmitter 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 levels for mobile wireless phones. Those
guidelines are consistent with the safe ty standards previously set by the fol-
lowing U.S. and internat ional standards bodies.
●ANSI (American National Stan dards Institute) C95.1 [1992]
●NCRP (National Council on Radiation Protection and Measurement)
Report 86 [1986]
●ICNIRP (International Commission on Non-Ionizing Radiation Protection)
[1996]
Those standards were based on comprehensive and periodic evaluations of
the relevant scientific literature. Over 120 scientists, engineers, and physi-
cians from universities, and governme nt health agencies and industries
reviewed the available body of rese arch to develop the ANSI Standard
(C95.1).
The design of Safety Connect complies wi th the FCC guidelines in addition to
those standards.
Safety information for Safety Connect

83
Instrument cluster2
IS350 AWD/IS350/IS300 AWD/IS300_U
2. Instrument clusterWarning lights and indicators ....................................... 84
Gauges and meters .....................89
Multi-information display .......... 94
Fuel consumption information .................................... 111

852. Instrument cluster
2
Instrument cluster
IS350 AWD/IS350/IS300 AWD/IS300_U
Warning lights inform the driver of malfunctions in the indicated vehicle systems.
Warning lights
*1
(U.S.A.)
Brake system warning light
( P. 525)*1Electric power steering sys-
tem warning light
( P. 526)
*1
(Canada)
Brake system warning light
( P. 525) LDA (Lane Departure
Alert) indicator (
P. 526)
*1
(if equipped)
Charging system warning
light ( P. 525)*1PCS warning light
( P. 526)
*1
(U.S.A.)
Malfunction indicator lamp
( P. 525)*1
Slip indicator ( P. 526)
*1
(Canada)
Malfunction indicator lamp
( P. 525)*1, 2
(if equipped)
“AFS OFF” indicator
( P. 527)
*1SRS warning light
( P. 525)Open door warning light
( P. 527)
*1
(U.S.A.)
ABS warning light
( P. 525)Low fuel level warning light
( P. 527)
*1
(Canada)
ABS warning light
( P. 525)Driver’s and front passen-
ger’s seat belt reminder light
( P. 527)
(U.S.A.)
Parking brake warning light
( P. 526)*3Rear passengers’ seat
belt reminder lights
( P. 527)
(Canada)
Parking brake warning light
( P. 526)*1Master warning light
( P. 527)