2012 Lexus IS250 cruise control

189
2-4. Using other driving systems
2
When driving
IS350/250_U
CAUTION
■To avoid operating the cruise control by mistake
Switch the cruise control off using the “ON-OFF” button when not in use.
■Situations unsuitable for cruise control
Do not use cruise control in any of the following situations.
Doing so may result in loss of control and could cause an accident resulting in death
or serious injury.
●In heavy traffic
●On roads with sharp bends
●On winding roads
●On slippery roads, such as those covered with rain, ice or snow
●On steep hills
Vehicle speed may exceed the set speed when driving down a steep hill.
●During emergency towing

444
4-3. Do-it-yourself maintenance
IS350/250_U■
Driver’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30 APo w e r s e a t
2A/C7. 5 AAir conditioning system
3MIR HTR15 AOutside rear view mirror defoggers
4TV NO.110 ADisplay
5FUEL OPEN10 AFuel filler door opener
6TV NO.27. 5 A
7PSB30 A
8S/ROOF25 AMoon roof
9TA I L10 ATail lights, license plate lights, parking
lights
10PA N E L7. 5 ASwitch illumination, air conditioning
system, display, audio
11RR FOG7. 5 A
12ECU-IG LH10 A
Cruise control, air conditioning sys-
tem, power steering, rain sensor, anti-
glare inside rear view mirror, shift lock
system, moon roof, tire inflation pres-
sure warning system, VSC
13FR S/HTR LH15 ASeat heaters and ventilators

445
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS350/250_U
14RR DOOR LH20 APo w e r w i n d o w s
15FR DOOR LH20 APower windows, outside rear view
mirror
16SECURITY7. 5 ASmart access system with push-button
start
17H-LP LVL7. 5 AAutomatic headlight leveling system
18LH-IG10 A
Charging system, headlight cleaner,
rear window defogger, electric cool-
ing fans, emergency flashers, turn sig-
nal lights, back-up lights, stop lights,
mirror heaters, rear sun shade, seat
belts, intuitive parking assist, cruise
control, air conditioning system, PTC
heater, manual transmission, wind-
shield wiper de-icer
19FR WIP30 AWindshield wipers
FuseAmpereCircuit

5
When trouble arises
499
5-2. Steps to take in an emergency
IS350/250_U
CAUTION
■When the spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may
not operate correctly:
●ABS & brake assist
●VSC
●TRAC
●EPS
●VDIM
●Navigation system (if equipped)
●Intuitive parking assist (if equipped)
●Cruise control
Also, not only can the following system not be utilized fully, it may actually negatively
effect the drive-train components:
●AWD system (if equipped)

580
Alphabetical index
IS350/250_U
Child-protectors ...................................... 49
Cigarette lighter....................................343
CleaningExterior ................................................... 378
Interior ..................................................... 382
Seat belts................................................383
Clock ........................................................ 338
Coat hooks ..............................................355
Compass ..................................................366
Condenser ..............................................406
Console box .......................................... 330
Cooling system Engine overheating ............................513
Cornering assist sensors .................... 190
Cruise control ......................................... 186
Cup holder .............................................. 332
Curtain shield airbags............................98
Customizable features .......................553
Daytime running light system ............174
Defogger* Rear window........................................ 224
Side mirror ............................................ 224
Dimension ................................................520
Dinghy towing ................................. 211, 212
Display
Satellite switch mode ....................... 339
Trip information ................................... 168
Warning message.............................. 481 Do-it-yourself maintenance ...............391
Door courtesy lights
Door courtesy lights ........................ 325
Wattage ................................................. 536
Door pockets ......................................... 334
Doors Door lock ................................33, 45, 48
Door windows....................................... 80
Side mirrors.............................................. 77
Driver's seat belt reminder light ..... 473
Driving Correct posture.....................................96
Procedures............................................. 130
Driving position memory...................... 58
Electric power steering........................196
Electronic key If the electronic key does not
operate properly............................505
Emergency, in case of
If a warning message is displayed .............................................. 481
If the electronic key does not operate properly............................505
If the engine will not start .................501
If the shift lever cannot be shifted from P................................... 503
If the vehicle has a discharged
battery ...................................................510
If the warning buzzer sounds........ 471
If the warning light turns on............ 471
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