2020 Lexus IS350 cruise control

5418-2. Steps to take in an emergency
8
When trouble arises
IS350 AWD/IS350/IS300 AWD/IS300_U
Indicates a malfunction in the smart access system with
push-button startA buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates that a Blind Spot Monitor sensor or the sur-
rounding area on the bumper is dirty or covered with ice
A buzzer also sounds.
 Clean off the dirt, snow, ice, etc. and drive the vehi-
cle with the operation conditions of the BSM func-
tion ( P. 290) satisfied for approximately 10
minutes. If the warning me ssage does not disappear,
the sensor may be misaligned. Have the vehicle
inspected by your Lexus dealer.
Indicates a malfunction in the dynamic radar cruise con-
trol system Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in the LDA (Lane Departure
Alert with steering control) system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions

5428-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U
The operation conditions of the camera sensor are not
met.The following systems may be suspended until the
problem shown in the message is resolved.
• PCS (Pre-Collision System)
• LDA (Lane Departure Alert with steering control)
• Dynamic radar cruise control
•Automatic High Beam
 P. 239
Indicates that the system is temporarily unavailable due
to a malfunction in a sensor other than the camera sen-
sor
A buzzer also sounds.
 Turn the LDA (Lane Departure Alert with steering
control) system off, wait for a little while, and then
turn the LDA (Lane Depart ure Alert with steering
control) system back on.
Warning messageDetails/Actions

5528-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U
■Warning messages
The warning message illustrations used are intended as examples, and may differ from
the image that is actually displayed on the multi-information display.
■Warning message in radar cruise mode
In the following cases, the warning message may not be displa yed even if vehicle-to-vehi-
cle distance decreases:
● When your vehicle and the vehicle ahead ar e traveling at the same speed or the vehi-
cle ahead is traveling more quickly than your vehicle
●When the vehicle ahead is traveling at a very low speed
●Immediately after cruise control speed is set
●At the instant the accelerator pedal is depressed
■The LDA (Lane Departure Alert with steering control) lane departure warning func-
tion
In the following situations, th e warning message will not be displayed even if a lane line is
crossed.
●When the vehicle speed deviates from the operating range of the LDA system func-
tions ( P. 245)
●When the lane lines cannot be recognized ( P. 247)
■Resetting the message indicating ma intenance is required (if equipped)
Make sure to reset the oil change system. ( P. 462, 477)
■Conditions that the tire pressure wa rning system may not function properly
 P. 490
■Warning buzzer
P. 529

5688-2. Steps to take in an emergency
IS350 AWD/IS350/IS300 AWD/IS300_U
WARNING
■When using the compact spare tire
●Remember that the compact spare tire provided is specifically designed for use with
your vehicle. Do not use your compact spare tire on another vehicle.
●Do not use more than one compact spare tires simultaneously.
●Replace the compact spare tire with a standard tire as soon as possible.
●Avoid sudden acceleration, abrupt steering, sudden braking and shifting operations
that cause sudden engine braking.
■When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may not
operate correctly:
Also, not only can the following system not be utilized fully, but it may even negatively
affect the drive-train components:
• AWD system
■Speed limit when using the compact spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a compact spare tire is
installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to observe
this precaution may lead to an accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage
location to reduce the possibility of personal injury during a collision or sudden brak-
ing.
• ABS & Brake assist
• VSC
• TRAC
• Dynamic radar cruise control
• PCS
• EPS
• AFS (if equipped)• Adaptive Variable Suspension System
(if equipped)
• LDA (Lane Departure Alert with
steering control)
• Lexus parking assist monitor (if equipped)
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)

641Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Alarm ............................................................ 78
Anchor brackets ...................................... 57
Antennas (smart access system with push-button start) ..................... 135
Anti-lock Brake System (ABS)........ 301 Warning light ...................................... 525
Approach warning (dynamic radar cruise control) ........................ 255
Armrest .................................................... 439
ASC (Active Sound Control) .......... 201
Assist grip ..................................................441
Audio input................................................321
Audio system............................................312 Audio input..............................................321
AUX port/USB port..........................321
Bluetooth
® audio...............................370
CD player ..............................................344
iPod ............................................................ 351
MP3/WMA/AAC disc .................344
Optimal use ........................................... 331
Portable music player ..................... 359
Radio ....................................................... 338
Steering wheel audio switch ......... 318
USB memory ...................................... 355 Automatic headlight leveling
system .................................................... 204
Automatic High Beam ....................... 206
Automatic light control system .................................................... 202
Automatic transmission........................ 191 If the shift lever cannot be shifted from P ..............196
M mode ....................................................194
Paddle shift switches..........................193
AUX port .................................................. 321
Average fuel economy................................. 112, 113, 115
Average vehicle speed..........................112

643Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Child safety ................................................ 52Airbag precautions ..............................38
Battery precautions ............. 483, 578
Child restraint system ......................... 53
How your child should wear the seat belt .......................................... 32
Installing child restraints..................... 57
Moon roof precautions.................... 169
Power window lock switch ............ 162
Power window precautions .......... 165
Rear door child-p rotectors ............ 127
Removed electronic key battery precautions.............. 503
Seat belt extender precautions ........................................... 35
Seat belt precautions ..........................56
Seat heater precautions..................426
Trunk precautions............................... 133
Child-protectors..................................... 127 Cleaning .......................................454, 458
Aluminum wheels ..............................455
Exterior ................................................... 454
Interior .....................................................458
Seat belts................................................ 459
Clock..........................................................437
Coat hooks ............................................... 441
Compass ..................................................449
Condenser.............................................. 480
Console box ............................................432
Cooling system ......................................478 Engine overheating .......................... 579
Cruise control Dynamic radar cruise control ..... 248
Cup holders............................................ 433
Current fuel consumption .................................. 112, 113
Curtain shield airbags ............................36
Customizable features ........................ 613

644Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Daytime running light system .......... 204
DefoggerOutside rear view mirrors ............. 422
Rear window ........................................ 422
Windshield ............................................ 422
Differential Front differential ................................. 593
Rear differential .................................. 594
Dimension ............................................... 586
Dinghy towing......................................... 185
Display Drive information ................................100
Dynamic radar cruise control......248
LDA (Lane Departure Alert with steering control) ....... 244
Multi-information display .................. 94
Warning message .............................532
Do-it-yourself maintenance ............. 468
Door courtesy lights Location ..................................................428
Wattage ..................................................597 Doors .......................................................... 124
Automatic door locking and unlocking system .................... 127
Door lock................................................. 126
Open door warning buzzer .......... 125
Open door warning light .............. 527
Outside rear view mirrors ..............159
Rear door child-protector .............. 127
Side windows ........................................ 162
Drive information .................................. 100
Drive-Start Control..................... 173, 195
Driver’s and front passenger’s seat belt reminder light....................527
Driver’s seat position memory.......... 147
Driving ........................................................ 172 Break-in tips ........................................... 174
Correct driving posture .................... 28
Driving mode select switch .......... 297
Procedures ............................................. 172
Winter drive tips ................................306
Dynamic radar cruise control ......... 248
D

648Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
JackPositioning a floor jack ......................471
Vehicle-equipped jack .................. 560
Jack handle ............................................. 560
Jam protection function Moon roof ...............................................167
Power windows ................................... 163
Keyless entry Smart access system with push-button start ......... 124, 130
Wireless remote control ....... 124, 130
Keys............................................................... 118 Battery-saving function .....................137
Electronic key ......................................... 118
Engine switch ........................................ 186
If the electronic key does not operate properly ........ 572
Key number plate ................................. 118
Keyless entry ........................................... 118
Mechanical key ...................................... 119
Replacing the battery ...................... 502
Warning buzzer .................................. 125
Wireless remote control ................... 118
Knee airbags ............................................. 36 Lane Departure Alert with
steering control (LDA) ................... 240
Language (multi-information display)..............103
LATCH anchors ...................................... 58
LDA (Lane Departure Alert with steering control) ...................... 240
Lever Auxiliary catch lever ......................... 470
Hood lock release lever................. 470
Internal trunk release lever ............. 132
Shift lever .................................................. 191
Tilt and telescopic steering lock release lever ............................ 155
Turn signal lever .................................. 198
Wiper lever.............................................210
Lexus Display Audio controller ....... 314
Lexus Display Audio system ............. 312
Lexus Enform
*
Lexus Enform Remote*........................ 74
Lexus Enform Safety Connect ........... 75
Lexus parking assist monitor
*.........269
Lexus Safety System + ........................222 Automatic High Beam....................206
Dynamic radar cruise control ..... 248
LDA (Lane Departure Alert with steering control) ................... 240
PCS (Pre-Collision System) ....... 229
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