service Lexus IS300 2020 / LEXUS 2020 IS300,IS350 (OM53F29U) Owner's Guide

4947-3. Do-it-yourself maintenance
IS350 AWD/IS350/IS300 AWD/IS300_U
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves, transmitters and
tire valve caps
●When removing or fitting the wheels, tires or the tire pressure warning valves and
transmitters, contact your Lexus dealer as the tire pressure warning valves and trans-
mitters may be damaged if not handled correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not installed, water
could enter the tire pressure warning valves and the tire pressure warning valves
could be bound.
●When replacing tire valve caps, do not use tire valve caps other than those specified.
The cap may become stuck.
■To avoid damage to the tire pressu re warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-
mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or
other qualified service shop as soon as possi ble. After use of liquid sealant, make sure
to replace the tire pressure warning valve and transmitter when repairing or replacing
the tire. (P. 486)
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause lo sses in tire inflation pressure, reducing the cushioning
ability of the tires. In addition, driving on rough roads may cause damage to the tires
themselves, as well as the vehicle’s wheels and body.
■Low profile tires
Low profile tires may cause greater damage than usual to the tire wheel when sustain-
ing impact from the road surface. Ther efore, pay attention to the following:
●Be sure to use proper tire inflation pressu re. If tires are under-inflated, they may be
damaged more severely.
●Avoid potholes, uneven pavement, curbs and other road hazards. Failure to do so
may lead to severe tire and wheel damage.
■If tire inflation pressure of ea ch tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

4997-3. Do-it-yourself maintenance
7
Maintenance and care
IS350 AWD/IS350/IS300 AWD/IS300_U
WARNING
■When replacing wheels
●Do not use wheels that are a different size from those recommended in the Owner’s
Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire. Doing
so may result in an accident, causing death or serious injury.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warning valves and
transmitters, make sure to have tires serviced by your Lexus dealer or other qualified
service shop. In addition, make sure to purchase your tire pressure warning valves
and transmitters at your Lexus dealer.
●Ensure that only genuine Lexus wh eels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-genu-
ine wheels.

517
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U8-2. Steps to take in an emergency
The following may indicate a problem wi
th your transmission. Contact your
Lexus dealer or commercial to wing service before towing.
●The engine is running but the vehicle does not move.
●The vehicle makes an abnormal sound.
If your vehicle needs to be towed
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or commercial towing se rvice, using a wheel-lift type truck or
flatbed truck.
Use a safety chain system for all towing, and abide by all state/provincial and
local laws.
Situations when it is necessary to contact dealers before towing

5999-1. Specifications
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
■Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octane rating no lower than 91.
●Lexus does not recommend the use of gasoline containing methanol.
■Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcyclopenta-
dienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gasoline that contains MMT. If fuel containing
MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the instru ment cluster may come on. If this happens,
contact your Lexus dealer for service.
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knocking for a short time while accelerating or driv-
ing uphill. This is normal and there is no need for concern.
●Use only gasoline containing up to 15% etha-
nol.
DO NOT use any flex-fuel or gasoline that
could contain more than 15% ethanol, includ-
ing from any pump labeled E30, E50, E85
(which are only some examples of fuel con-
taining more than 15% ethanol).DO NOT use gasoline con-
taining more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

6069-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
This information has been prepared in acco rdance with regulations issued by the
National Highway Traffic Safety Administra tion of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospe ctive purchasers of Lexus vehicles with
information on uniform tire quality grading.
Your Lexus dealer will help answer any ques tions you may have as you read this infor-
mation.
■DOT quality grades
All passenger vehicle tires must conform to Federal Safety Requirements in
addition to these grades. Quality grades can be found where applicable on
the tire sidewall between tread shoulder and maximum section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rati ng based on the wear rate of the tire
when tested under controlled conditio ns on a specified government test
course.
For example, a tire graded 150 would wear one and a half (1 - 1/2) times as well on
the government course as a tire graded 100.
The relative performance of tires depends upon the actua l conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and difference s in road characteristics and climate.
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and they rep-
resent the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking (straight
ahead) traction tests and does not include cornering (turning) traction.
Uniform Tire Quality Grading

649Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
License plate lights............................... 202Light switch ...........................................202
Replacing light bulbs ........................... 511
Light bulbs Replacing .............................................. 507
Wattage ..................................................597
Lights Headlight switch.................................202
Illuminated entry system ................ 459
Interior light ...........................................429
Interior lights list ..................................428
Personal lights .....................................429
Replacing light bulbs ....................... 507
Trunk light ................................................132
Turn signal lever .................................. 198
Vanity lights .......................................... 437
Wattage ..................................................597
Lock steering column .......................... 188
Low profile tire.......................................488
Luggage security system...................... 131 Maintenance
Do-it-yourself maintenance .........468
General maintenance ..................... 464
Maintenance data............................. 586
Maintenance requirements ............461
Malfunction indicator lamp .............. 525
Master warning light ............................527
Meter Changing the display ......................... 92
Indicators .................................................. 86
Instrument panel light control ........ 92
Meters ........................................................ 89
Multi-information display.................. 94
Warning lights........................................ 85
Micro dust and pollen filter ................ 421
Mirrors Inside rear view mirror...................... 157
Outside rear view mirror defoggers........................................... 422
Outside rear view mirrors ..............159
Vanity mirrors ..................................... 437
MMS (Multimedia messaging service).................................................. 380
Mobile Assistant ..................................... 319M
*: For vehicles with a naviga tion system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

653Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Seats, Front ...............................................143Adjustment ............................................. 143
Adjustment precautions .................. 144
Child seats/child restraint system installation.............................. 57
Cleaning ................................................ 458
Driving position memory .................147
Head restraints ..................................... 152
Power easy access system .............147
Properly sitting in the seat ................ 28
Seat heaters .......................................... 427
Seat position memory........................147
Seat ventilators .................................... 427
Seats, Rear ................................................145 Fold down the seatback .................. 145
Luggage security system .................. 131
Sensor Automatic headlight system .........204
Inside rear view mirror ..................... 158
Intuitive parking assist ..................... 260
LDA (Lane Departure Alert with steering control) ...................240
Radar sensor ........................... 224, 288
Rain-sensing windshield wipers .................................................... 216
Service reminder indicators ............... 84 Shift lever .................................................... 191
Automatic transmission ..................... 191
If the shift lever cannot be shifted from P ..............196
Shift lock system ..................................... 196
Shift position and gear position ......... 89
Side airbags ................................................36
Side marker lights ................................ 202 Light switch........................................... 202
Replacing light bulbs .......................... 511
Side mirrors .............................................. 159 Adjusting and folding ........................159
BSM (Blind Spot Monitor) ........... 260
Linked mirror function when reversing................................. 160
Mirror position memory .................. 147
Side turn signal lights ............................198 Replacing light bulbs .......................... 511
Turn signal lever .................................. 198
Side windows ........................................... 162
Slip indicator .......................................... 526
*: For vehicles with a naviga tion system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.

654Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Smart access system with push-button start ...................... 135 Antenna location ................................. 135
Entry functions ............................ 124, 130
Starting the engine ............................. 186
SMS (Short message service).........380
Snow mode ...............................................192
Snow tires ................................................308
Spare tire.................................................. 559 Inflation pressure ............................... 595
Storage location ................................ 560
Spark plug ............................................... 592
Specifications ......................................... 586
Speedometer ............................................ 89
Speed indicator ..........................................91
Steering lock ........................................... 188 Column lock release .........................188
Steering wheel ........................................ 155 Adjustment ............................................. 155
Audio switches ..................................... 318
Heated steering wheel ....................426
Power easy access system .............147
Steering wheel position memory...............................147 Stop lights
Replacing light bulbs .......................... 511
Storage feature ....................................... 431
Stuck If the vehicle becomes stuck........583
Sun visors..................................................437
Sunshade Rear .......................................................... 439
Roof ............................................................ 167
Switches ASC (Active Sound Control) .......201
Audio remote control switches ............................................... 318
BSM (Blind Spot Monitor) switch ...................................................285
Door lock switches ............................. 126
Driving mode select switch .......... 297
Driving position memory switches ................................................ 147
Dynamic radar cruise control switch................................... 248
Emergency flashers switch .............514
Engine switch ....................................... 186