steering Lexus IS350 2021 / LEXUS 2021 IS 300, IS 350 (OM53E98U) Manual PDF

3888-1. Specifications
cornering (turning) traction.
■Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudden tire failure. Grade C corresponds to
a level of perfor-
mance which all passenger car tires must
meet under the Fede ral Motor Vehicle
Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel
than the minimum required by law.
Warning: The temperature grades of a tire
assume that it is properly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pressureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic trans-
mission, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning
and additional weight optional engine

4008-2. Customization
■LTA (Lane Tracing Assist) (P.180)
■RSA (Road Sign Assist)* ( P.189)
*:If equipped
■Dynamic radar cruise contro l with full-speed range (P.192)
■BSM (Blind Spot Monitor)* ( P.202)
FunctionDefault settingCustomized setting
Lane centering functionOnOff—O—
Alert typeSteering wheel
vibrationBuzzer—O—
Alert sensitivityHighStandard—O—
Vehicle sway warning func-
tionOnOff—O—
Vehicle sway warning sensi-
tivityStandardHigh—O—Low
FunctionDefault settingCustomized setting
RSA (Road Sign Assist)OnOff—O—
Excess speed notification
methodDisplay onlyNo notification—O—Display and buzzer
Excess speed notification
level1 mph (2 km/h)3 mph (5 km/h)—O—5 mph (10 km/h)
Other notifications method
(No-entry notification)Display onlyNo notification—O—Display and buzzer
FunctionDefault settingCustomized setting
Curve speed reduction func-
tion strengthHighLow—O—Off
FunctionDefault settingCustomized setting
BSM (Blind Spot Monitor)OnOff—O—
Outside rear view mirror indi-
cator brightnessBrightDim—O—
ABC
ABC
ABC
ABC

4048-3. Initialization
8-3.Initialization
*:If equipped
Items to initialize
The following items must be initialized for normal system operation after such
cases as the battery being reconnected, or maintenance being performed on
the vehicle:
List of items to initialize
ItemWhen to initializeReference
PKSB (Parking Support
Brake)
*• After reconnecting or changing the batteryP.225
Intuitive parking assist*• After reconnecting or changing the batteryP.212
Message indicating
maintenance is
required
• After the maintenance is performedP.286
Oil maintenance• After the maintenance is performedP.298
Tire pressure warning
system
• When rotating the tires
• When the tire inflation pressure is
changed such as when changing trav-
eling speed or load weight
• When changing the tire size
P.308
Lexus parking assist
monitor
*
• Battery has been reinstalled.
• The steering wheel has been moved while the battery was being reinstalled.
• Battery power is low.Refer to the “NAVI-
GATION AND MUL- TIMEDIA SYSTEM OWNER’S MAN- UAL”.
Panoramic view moni-
tor
*
• Battery has been reinstalled.
• The steering wheel has been moved while the battery was being reinstalled.
• Battery power is low.Refer to the “NAVI-
GATION AND MUL- TIMEDIA SYSTEM OWNER’S MAN- UAL”.

418What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.358)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.358)
 Is the electronic key battery weak or
depleted? ( P.316)
 Is the engine switch in IGNITION
ON mode?
When locking the doors, turn the engine
switch off. ( P.136)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop-
erly due to the condition of the radio
wave. ( P.100)
 Is the child-protector lock set?
The rear door cannot be opened from
inside the vehicle when the lock is set.
Open the rear door from outside and then
unlock the child-protector lock. ( P.94)
 The function to prevent the elec-
tronic key from being left inside the
trunk will operate and you can open
the trunk as usual. Take the key out
from the trunk. ( P.97)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.134)
 Is the shift lever in P? ( P.134)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.99)
 Is the steering wheel unlocked?
( P.134)
 Is the electronic key battery weak or
If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The electronic key does not
operate properly
The doors cannot be locked or
unlocked
The rear door cannot be opened
The trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine does not start

419What to do if... (Troubleshooting)
depleted?
In this case, the engine can be started in a
temporary way. (P.360)
Is the battery discharged? ( P.361)
 Is the engine switch in IGNITION
ON mode?
If you cannot release the shift lever by
depressing the brake pedal with the engine
switch in IGNITION ON mode. ( P.139)
 It is locked automatically to prevent
theft of the vehicle. ( P.134)
 Is the window lock switch pressed?
The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.119)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is not running) for
a period of time. ( P.136) 
The seat belt reminder light is flash-
ing
Are the driver and the front passenger
wearing the seat belts? ( P.340)
 The parking brake indicator is on
Is the parking brake released? ( P.143)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.337, 346)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.62)
Do one of the following to deactivate
or stop the alarm:
 Unlock the doors.
 Open the trunk.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine. (The alarm will be
deactivated or stopped after a few
seconds.)
 Is the electronic key left inside the
vehicle or the moon roof opened?
Check the message on the multi-informa-
tion display. ( P.346)
The shift lever cannot be shifted
from P even if you depress the
brake pedal
The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle

422Alphabetical Index
BuzzerHands off steering wheel warning (LTA).......................................................................... 188
C
Card key ............................................................ 88
Care Exterior ...........................................................280
Interior ............................................................. 283
Seat belts........................................................ 283
Wheels and wheel ornaments............280
Cargo capacity...............................................132
Cargo net ....................................................... 268
Center Display ............................................. 250
Chains .............................................................. 244
Child restraint system Fixed with a LATCH system .................. 49
Fixed with a seat belt................................... 45
Front passenger occupant classification system ............................................................. 36
Points to remember ...................................... 41
Riding with children ....................................... 41
Types of child restraint system installation method ............................................................42
Using an anchor bracket ............................ 51
Child safety Airbag precautions...................................... 33
Battery precautions .................................. 364
Child restraint system..................................42
Heated steering wheel and seat heater precautions.................................................. 261
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 122
Power window lock switch...................... 119
Power window precautions .................... 119
Rear door child-protectors ..................... 94
Removed electronic key battery precau- tions ................................................................. 317
Seat belt extender precautions ............. 25
Seat belt precautions .................................... 41
Trunk precautions ........................................ 96 Child-protectors............................................. 94
Cleaning
Exterior........................................................... 280
Interior .............................................................283
Radar sensor ................................................. 164
Seat belts ........................................................283
Wheels and wheel ornaments ........... 280
Clock ..................................................71, 72, 270
Coat hooks..................................................... 270
Condenser .....................................................300
Console box ...................................................267
Consumption screen .................................... 83
Cooling system............................................. 298 Engine overheating.................................. 365
Cruise control Dynamic radar cruise control with full-speed range ........................................192
Cup holders ....................................................267
Current fuel consumption ...........................79
Curtain shield airbags .................................. 28
Customizable features .............................. 394
D
Daytime running light system ...................149
Defogger Outside rear view mirrors.....................255
Rear window ................................................255
Windshield ....................................................255
Differential Front differential oil............. ....................... 377
Rear differential oil......... ..................... ....... 377
Dimensions .................................................... 372
Dinghy towing.................................................133
Display Center Display ........................................... 250
Dynamic radar cruise control with full-speed range ........................................192
Intuitive parking assist ............................... 210
LTA (Lane Tracing Assist) ..................... 185
Multi-information display .......................... 76
RCTA.................................................................216
Warning message .....................................346

423Alphabetical Index
Distance until next engine oil change .....75
Do-it-yourself maintenance .................... 287
Door courtesy lights ................................... 263Wattage........................................................... 381
Door lock Doors.................................................................. 92
Smart access system with push-button start ................................................................... 99
Wireless remote control........................... 90
Doors Automatic door lock ing and unlocking
system ............................................................. 95
Door glasses ................................................... 118
Door lock.......................................................... 92
Open door warning buzzer .......... 93, 94
Outside rear view mirrors ....................... 116
Rear door child-protectors ..................... 94
Drive distance ...................................................79
Drive info 1/Drive info 2/Drive info 3.....79
Driver’s seat position memory Driving position memory........................ 108
Memory recall function ........................... 109
Power easy access system .................... 108
Drive-Start Control (DSC) Sudden start restraint control................ 129
Driving Break-in tips ...................................................125
Correct driving posture .............................23
Driving mode select switch .................. 236
Procedures ..................................................... 124
Winter drive tips......................................... 243
Driving information display ........................ 78
Driving position memory........................... 108 Memory recall function ........................... 109
Power easy access system .................... 108
Driving range ....................................................79
Driving support system information display ...............................................................................81
DSC (Drive-Start Control) Sudden start restraint control................ 129 Dynamic radar cruise control with
full-speed range ..........................................192Warning message .................................... 200
E
Eco Driving Indicator.................................... 80
Eco Driving Indicator Light ........................ 80
EDR (Event data recorder) ............................7
Elapsed time ......................................................79
Electric Power Steering (EPS) .............. 238 Warning light .............................................. 340
Electronic key .................................................. 88 Battery-saving function............................100
If the electronic key does not operate properly ...................................................... 359
Replacing the battery ................................ 316
Emergency flashers .................................... 328
Emergency, in case of If a warning buzzer sounds................... 337
If a warning light turns on....................... 337
If a warning message is displayed .....346
If the battery is discharged ..................... 361
If the electronic key does not operate properly ...................................................... 359
If the engine will not start........................357
If the fuel filler do or cannot be opened
......................................................................... 359
If the vehicle is trapped in rising water ..........................................................................329
If you have a flat tire ..................................349
If you lose your keys ................................ 358
If you think something is wrong..........335
If your vehicle becomes stuck ............ 368
If your vehicle has to be stopped in an emergency .................................................328
If your vehicle needs to be towed ...... 331
If your vehicle overheats ....................... 365
Engine ACCESSORY mode............................... 136
Compartment..............................................295
Engine switch .................................................134
Fuel pump shut off system.....................336

424Alphabetical Index
Hood................................................................ 293
How to start the engine............................134
Identification number ............................... 373
If the engine will not start ....................... 357
If your vehicle has to be stopped in an
emergency ................................................ 328
Ignition switch (engine switch) ............. 134
Overheating.................................................365
Tachometer ............................................... 71, 72
Engine coolant Capacity ......................................................... 376
Checking .......................................................298
Preparing and checking before winter......................................................................... 243
Engine coolant temperature gauge . 71, 72
Engine immobilizer system ........................ 60
Engine oil Capacity ......................................................... 374
Checking ....................................................... 296
Preparing and checking before winter......................................................................... 243
Warning light ...............................................338
Engine oil maintenance data .................. 298
Engine oil pressure gauge .......................... 80
Engine oil temperature gauge .................. 80
Engine switch ..................................................134 Auto power off function ...........................136
Changing the engine switch modes..136
If your vehicle has to be stopped in an
emergency ................................................ 328
Enhanced Vehicle Stability Control (Enhanced VSC) ...................................... 238
Enhanced VSC (Enhanced Vehicle Stabil- ity Control) .................................................. 238
EPS (Electric Power Steering) .............. 238 Warning light ...............................................340
Event data recorder (EDR) ............................7
F
First-aid kit storage belt ............................ 268
Flat tire Tire pressure warning system ............ 305 Vehicles with a spare tire.......................349
Floor mats ...........................................................22
Fluid Automatic transmission .......................... 377
Brake ................................................................378
Washer ...........................................................302
Footwell lights ............................................... 263 Wattage ........................................................... 381
Front passenger occupant classification system .............................................................. 36
Front seats Adjustment ..................................................... 106
Cleaning .........................................................283
Correct driving posture ............................ 23
Driving position memory ........................ 108
Head restraints................................................. 111
Memory recall function............................ 109
Power easy access system .................... 108
Seat heaters ....................................................261
Seat position memory ..............................108
Seat ventilators ..............................................261
Front side marker light Light switch .................................................... 149
Replacing light bulbs ................................ 322
Front turn signal lights Replacing light bulbs .................... 322, 323
Turn signal lever ...........................................142
Wattage ........................................................... 381
Fuel Capacity ......................................................... 374
Fuel gauge ..................................................71, 72
Fuel pump shut off system.....................336
Information ....................................................382
Refueling............................................................ 161
Type .................................................................. 374
Warning light .............................................. 340
Fuel consumption Average fuel economy .............................. 79
Current fuel consumption ........................ 79
Fuel filler door If the fuel filler do or cannot be opened
......................................................................... 359

425Alphabetical Index
Refueling ........................................................... 161
Fuel gauge ................................................... 71, 72
Fuel pump shut off system........................ 336
Fuses .................................................................. 318
G
Garage door opener ................................. 273
Gauges ................................................................. 71
Gear Position.....................................................81
G-force............................................................... 80
Glove box ....................................................... 266
Glove box light ..............................................267
H
Head restraints ..................................................111
Headlight aim ................................................ 320
Headlights Automatic High Beam system............... 151
Light switch .....................................................149
Replacing light bulbs................................ 322
Heated steering wheel ................................ 261
Heaters Automatic air conditioning system ... 253
Heated steering wheel.............................. 261
Outside rear view mirrors .................... 255
Seat heaters .................................................... 261
High mounted stoplight Replacing light bulbs................................ 322
Hill-start assist control ............................... 238
Hood Open ............................................................... 293
Hooks Coat hooks ................................................... 270
Retaining hooks (floor mat)......................22
Horn ..................................................................... 114
I
I/M test ............................................................ 290
Identification Engine ............................................................. 373 Vehicle ............................................................ 372
Ignition switch (engine switch).................134 Auto power off function........................... 136
Changing the engine switch modes . 136
If your vehicle has to be stopped in an emergency .................................................328
Indicators ........................................................... 68
Initialization Items to initialize ........................................ 404
Maintenance.................................... 286, 298
Power windows ............................................. 118
Tire pressure warning system ............ 308
Inside door handle ligh ts........................... 263
Inside rear view mirror ................................. 114
Instrument panel light control ................... 75
Intercooler......................................................300
Intercooler coolant Capacity ......................................................... 376
Checking ...................................................... 298
Interior lights.................................................. 263 Front interior light ......................................263
Rear interior light........................................263
Intuitive parking assist......................208, 210 Function ........................................................... 210
Warning message ....................................... 212
J
JackPositioning a floor jack ............................293
Vehicle-equipped jack .......................... 350
Jack handle ....................................................350
Jam protection function Moon roof ........................................................ 121
Power windows ............................................. 118
K
Keyless entrySmart access system with push-button start ...................................................................99
Wireless remote control ...........................90

426Alphabetical Index
KeysBattery-saving function ........................... 100
Electronic key .................................................88
Engine switch................................................. 134
If the electronic key does not operate properly.......................................................359
If you lose your keys................................ 358
Key number plate .........................................88
Keyless entry .......................................... 92, 99
Mechanical key..............................................88
Replacing the battery.................................316
Warning buzzer ............................................ 99
Wireless remote control........................... 90
Knee airbags .................................................... 28
L
Lane Tracing Assist (LTA) Operation....................................................... 180
Warning messages ................................... 189
Language (multi-information display) ... 82
LATCH anchors ............................................. 49
Lever Auxiliary catch lever ................................. 293
Hood lock release lever......................... 293
Internal trunk release lever ...................... 98
Shift lever......................................................... 138
Turn signal lever ........................................... 142
Wiper lever.....................................................154
Lexus Enform Safety Connect.................. 54
Lexus Safety System + 2.5 AHB (Automatic High Beam)............... 151
Dynamic radar cruise control with full-speed range ........................................ 192
LTA (Lane Tracing Assist)..................... 180
PCS (Pre-Collision System)..................170
RSA (Road Sign Assist) .......................... 189
License plate lights Light switch .....................................................149
Replacing light bulbs................................ 322
Light bulbs Replacing ......................................................... 321 Lights
Automatic High Beam system ............... 151
Front interior lights ....................................263
Front personal lights................................. 264
Headlight switch.......................................... 149
Interior lights .................................................263
Interior lights list ..........................................263
Rear interior lights .....................................263
Rear personal lights .................................. 264
Replacing light bulbs ................................ 322
Trunk lid light................................................... 97
Trunk light ......................................................... 97
Turn signal lever ...........................................142
Vanity lights .................................................... 271
Wattage ........................................................... 381
Lock steering column ..................................134
LTA (Lane Tracing Assist) Operation .......................................................180
Warning messages.................................... 189
Luggage mats ............................................... 268
M
Maintenance Do-it-yourself maintenance ...................291
General maintenance ............................. 287
Maintenance data ...................................... 372
Maintenance requirements ................. 286
Malfunction indicator lamp ..................... 338
Menu icons......................................................... 77
Meter Changing the main meter location...... 74
Clock.............................................................71, 72
Indicators...........................................................68
Instrument panel light control................. 75
Meter control switches ...............................77
Meters................................................................... 71
Multi-information display .......................... 76
Settings............................................................... 82
Warning lights ............................................. 337
Warning message .....................................346
Micro dust and pollen filter ..................... 258