2017 Lexus IS300 cruise control

2464-5. Using the driving support systems
IS350/300/200t_U (OM53D76U)
■Automatic cancelation of co nstant speed control mode
Constant speed control mode is automatica lly canceled in the following situations:
●Actual vehicle speed is more than approxim ately 10 mph (16 km/h) below the set vehi-
cle speed.
●Actual vehicle speed falls below approximately 25 mph (40 km/h).
●VSC is activated.
●TRAC is activated for a period of time.
●When the VSC or TRAC system is turned off by pressing the VSC OFF switch.
●Pre-collision braking is activated.
If constant speed control mode is automati cally canceled for any other reason, there may
be a malfunction in the system . Contact your Lexus dealer.
■Warning messages and buzzers fo r dynamic radar cruise control
Warning messages and buzzers are used to indicate a system malfunction or to inform
the driver of the need for ca ution while driving. If a warning message is shown on the
multi-information display, read the message and follow the instructions.
■When the sensor may not be correctly detecting the vehicle ahead
In the case of the following and depending on the conditions, operate the brake pedal
when deceleration of the system is insuff icient or operate the accelerator pedal when
acceleration is required.
As the sensor may not be able to correctly detect these types of vehicles, the approach
warning ( →P. 243) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the same lane
●Vehicles with small rear ends (traile rs with no load on board, etc.)
●Motorcycles traveling in the same lane
●When water or snow thrown up by the surrounding vehicles hinders the detecting of
the sensor

5308-2. Steps to take in an emergency
IS350/300/200t_U (OM53D76U)
Indicates that the dynamic radar cruise control system
cannot be used temporarily due to bad weatherA buzzer also sounds.
→ Use the dynamic radar cruise control system when
it becomes available again.
Indicates a malfunction in the smart access system with
push-button start
A 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. 278) 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.
Warning messageDetails/Actions

5408-2. Steps to take in an emergency
IS350/300/200t_U (OM53D76U)
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.
■Warning messages
The warning message illustrations used are intended as examples, and may differ from
the image that is actually displaye d on the multi-information display.
■Warning message in radar cruise mode
In the following situations, the warning message may not be displayed even if vehicle-to-
vehicle distance decreases:
●When the speed of the preceding vehicle matches or exceeds your vehicle speed
●When the preceding vehicle is traveling at an extremely slow speed
●Immediately after the cruise control speed was 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. 232)
●When the lane lines cannot be recognized ( →P. 234)
■Resetting the message indicating ma intenance is required (if equipped)
Make sure to reset the oil change system. ( →P. 454, 468)
■Conditions that the tire pressure wa rning system may not function properly
→ P. 481
■Warning buzzer
→P. 520
Indicates that part of th e PCS (Pre-Collision System)
sensor is dirty, covered with ice, etc.
→ Remove any dirt, ice, etc.
Warning messageDetails/Actions
(Flashes)

5558-2. Steps to take in an emergency
8
When trouble arises
IS350/300/200t_U (OM53D76U)
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 comp act 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 possibilit y 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)

631Alphabetical index
IS350/300/200t_U (OM53D76U)
Alarm ............................................................ 70
Anchor brackets ...................................... 57
Antennas (smart access system with push-button start) ...................... 122
Anti-lock Brake System (ABS)....... 289 Warning light ........................................ 516
Approach warning (dynamic radar cruise control) ........................ 243
Armrest .................................................... 423
ASC (Active Sound Control) ...........187
Assist grip ................................................ 425
Audio input.............................................. 309
Audio system..........................................300 Audio input........................................... 309
AUX port/USB port....................... 309
Bluetooth
® audio.............................. 358
CD player .............................................. 332
iPod ...........................................................339
MP3/WMA/AAC disc ................. 332
Optimal use ........................................... 319
Portable music player ...................... 347
Radio ........................................................326
Steering wheel audio switch ....... 306
USB memory .......................................343 Automatic headlight leveling
system ......................................................190
Automatic High Beam ......................... 192
Automatic light control system ..................................................... 188
Automatic transmission....................... 177 If the shift lever cannot be shifted from P ..............182
M mode ................................................... 180
Paddle shift switches.......................... 179
AUX port ................................................ 309
Average fuel economy............................. 100, 101, 103
Average vehicle speed....................... 100

633Alphabetical index
IS350/300/200t_U (OM53D76U)
Child safety ................................................ 52Airbag precautions ..............................38
Battery precautions ............. 474, 565
Child restraint system ......................... 53
How your child should wear the seat belt .......................................... 32
Installing child restraints..................... 57
Moon roof precautions.................... 156
Power window lock switch ............ 149
Power window precautions .......... 152
Rear door child-p rotectors ............. 114
Removed electronic key battery precautions...............494
Seat belt extender precautions ........................................... 35
Seat belt precautions ..........................56
Seat heater precautions................... 410
Trunk precautions............................... 120
Child-protectors...................................... 114 Cleaning ....................................... 446, 450
Aluminum wheels .............................. 447
Exterior ................................................... 446
Interior .....................................................450
Seat belts..................................................451
Clock........................................................... 421
Coat hooks ..............................................425
Compass ................................................. 433
Condenser................................................ 471
Console box ............................................. 416
Cooling system ......................................469 Engine overheating ..........................566
Cruise control Dynamic radar cruise control ..... 236
Cup holders.............................................. 417
Current fuel consumption ................................100, 101
Curtain shield airbags ............................36
Customizable features ...................... 602

634Alphabetical index
IS350/300/200t_U (OM53D76U)
Daytime running light system ........... 190
DefoggerOutside rear view mirrors ............ 406
Rear window ....................................... 406
Windshield ........................................... 406
Differential Front differential ................................. 582
Rear differential .................................. 582
Dimension ............................................... 574
Dinghy towing........................................... 171
Display Drive information ..................................89
Dynamic radar cruise control......236
LDA (Lane Departure Alert with steering control) .........231
Multi-information display ..................84
Warning message ............................. 522
Do-it-yourself maintenance ............. 460
Door courtesy lights Location ....................................................412
Wattage ................................................. 586 Doors ............................................................. 111
Automatic door locking and unlocking system ......................114
Door lock...................................................113
Open door warning buzzer ............112
Open door warning light ............... 518
Outside rear view mirrors ..............146
Rear door child-protector ................114
Side windows ........................................149
Drive information .................................... 89
Drive-start control ........................ 159, 181
Driver’s and front passenger’s seat belt reminder light.....................518
Driver’s seat position memory.......... 134
Driving ........................................................158 Break-in tips ...........................................159
Correct driving posture .................... 28
Driving mode select switch ..........285
Procedures ............................................ 158
Winter drive tips ................................ 294
Dynamic radar cruise control ..........236
D

638Alphabetical index
IS350/300/200t_U (OM53D76U)
JackPositioning a floor jack ....................463
Vehicle-equipped jack ...................547
Jack handle ............................................. 547
Jam protection function Moon roof .............................................. 154
Power windows ................................... 150
Keyless entry Smart access system with push-button start .............. 111, 117
Wireless remote control ............ 111, 117
Keys............................................................. 106 Battery-saving function .....................123
Electronic key ....................................... 106
Engine switch ......................................... 172
If the electronic key does not operate properly ....... 559
Key number plate ............................... 106
Keyless entry ......................................... 106
Mechanical key .................................... 107
Replacing the battery .......................493
Warning buzzer .................................... 112
Wireless remote control ................. 106
Knee airbags ............................................. 36 Lane Departure Alert with
steering control (LDA) .................... 227
Language (multi-information display)................92
LATCH anchors ...................................... 58
LDA (Lane Departure Alert with steering control) ....................... 227
Lever Auxiliary catch lever ......................... 462
Hood lock release lever................. 462
Internal trunk release lever .............. 119
Shift lever ................................................. 177
Tilt and telescopic steering lock release lever ............................. 142
Turn signal lever ...................................184
Wiper lever.............................................196
Lexus Display Audio controller ..... 302
Lexus Display Audio system ........... 300
Lexus Enform
*
Lexus Enform Remote*.....................442
Lexus Enform Safety Connect ........437
Lexus parking assist monitor
*.........257
Lexus Safety System+ .........................207 Automatic High Beam...................... 192
Dynamic radar cruise control ..... 236
LDA (Lane Departure Alert with steering control) ....................227
PCS (Pre-Collision System) ......... 214
J
K
L
*: For vehicles with a naviga tion system, refer to the
“NAVIGATION SYSTEM OWNER’S MANUAL”.