alarm Lexus IS250C 2010 User Guide

96
1-6. Theft deterrent system
10_IS250C/350C_U
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the
following.
●Nobody is in the vehicle.
●The windows and retractable hardtop are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
■Triggering of the alarm
The alarm may be triggered in the following situations.
Stopping the alarm deactivates the system.
●A person inside the vehicle opens a door, the trunk or hood.
●The battery is recharged or replaced when the vehicle is locked.
■When the battery is disconnected
Be sure to deactivate the alarm system.
If the battery is disconnected before deactivating the alarm system, the alarm may
be triggered when the battery is reconnected.

196
2-4. Using other driving systems
10_IS250C/350C_U
CAUTION
■When the radar sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles are in
front of you.
As the sensor may not be able to correctly detect these types of vehicles, the prox-
imity alarm (→P. 472) will not be activated, and an accident may result.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving
●Vehicles with small rear ends (trailers with no load on board etc.)
●Motorcycles traveling in the same lane
■Conditions under which the vehicle-to-vehicle distance control may not function
correctly
Apply the brakes as necessary in the following conditions as the radar sensor may
not be able to correctly detect vehicles ahead, and an accident may result.
●When water or snow thrown up by the surrounding vehicles hinders the function-
ing of the sensor
●When your vehicle is pointing upwards (caused by a heavy load in the trunk, etc.)
●When the road curves or when the lanes are narrow
●When steering wheel operation or your position in the lane is unstable
●When the vehicle ahead of you decelerates suddenly

5
When trouble arises
503
5-2. Steps to take in an emergency
10_IS250C/350C_U
Changing “ENGINE START STOP” switch modes and starting the engine
Automatic transmissionShift the shift lever to P and apply the brakes.
Touch the Lexus emblem side of
the electronic key to the
“ENGINE START STOP” switch.
An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to
the “ENGINE START STOP”
switch if any of the doors is opened
and closed while the key is touched
to the switch.
To change “ENGINE START STOP” switch modes: Within 10
seconds of the buzzer sounding, release the brake pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the switch is pressed.
(→P. 142)
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds after the buzzer sounds, keeping the brake
pedal depressed.
STEP1
STEP2
STEP3

504
5-2. Steps to take in an emergency
10_IS250C/350C_UManual transmission
Shift the shift lever to N and depress the clutch pedal.
Touch the Lexus emblem side of
the electronic key to the
“ENGINE START STOP” switch.
An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to
the “ENGINE START STOP”
switch if any of the doors is opened
and closed while the key is touched
to the switch.
To change “ENGINE START ST OP” switch modes: Within 10
seconds of the buzzer sounding, release the clutch pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the switch is pressed.
(→ P. 142)
To start the engine: Press the “ENGINE START STOP” switch
within 10 seconds after the buzzer sounds, keeping the clutch
pedal depressed.
In the event that the engine still cannot be started, contact your Lexus
dealer.
STEP1
STEP2
STEP3

572
10_IS250C/350C_U
Alphabetical index
Alphabetical index
A/C ............................................................230
ABS.............................................................204
AFS ...............................................................174
Adaptive front lighting system ..........174
Air conditioning filter .......................... 422
Air conditioning systemAir conditioning filter ....................... 422
Automatic air conditioning system .................................................. 230
Airbags
Airbag operating conditions..........102
Airbag precautions for your child........................................................ 106
Airbag warning light ........................ 464
Front passenger occupant classification system........................... 111
General airbag pr ecautions ......... 106
Locations of airbags.......................... 100
Modification and disposal of airbags .................................................... 110
Proper driving posture ........... 98, 106
Side airbag operating conditions............................................ 103
Side airbag precautions .................. 106
SRS airbags ........................................... 100
Alarm ............................................................95
Antenna .................................................... 247
Anti-lock brake system ......................204
Ashtrays ....................................................352
Audio input ..............................................284 Audio system
Antenna................................................... 247
AUX adapter ...................................... 284
Bluetooth
® audio ............................. 289
CD player/changer ......................... 250
iPod
® player ....................................... 265
MP3/WMA disc................................257
Optimal use ......................................... 282
Portable music player ..................... 284
Radio ........................................................ 242
Steering wheel audio switch........ 286
USB memory player ........................ 273
Automatic air conditioning system .................................................... 230
Automatic headlight leveling system ......................................................175
Automatic light control system......... 173
Automatic transmission Automatic transmission ................... 147
If the shift lever cannot be shifted from P................................... 499
S mode ....................................................... 151
AUX adapter ......................................... 284
A

580
Alphabetical index
10_IS250C/350C_U
TachometerTacho indicator.................................... 159
Tachometer ........................................... 159
Tail lights
Switch ........................................................ 173
Talk switch ..................................................311
Telephone switch .....................................311
Theft deterrent system
Alarm .......................................................... 95
Engine immobilizer system ............. 93
Theft prevention labels .......................... 97
Tire inflation pressure .......................... 416
Tire information Glossary................................................ 550
Size ........................................................... 547
Tire identification number ............. 547
Uniform tire quality grading .........548
Tires
Chains ..................................................... 220
Checking ...............................................406
If you have a flat tire..........................486
Inflation pressure..................................416
Inflation pressure sensor................ 407
Information............................................545
Replacing...............................................486
Rotating tires ........................................406
Run-flat tire............................................495
Size ...........................................................536
Snow tires .............................................. 220
Spare tire................................................486
Tools ...........................................................486
Total load capacity ................................ 219 Towing
Dinghy towing ......................... 225, 226
Emergency towing ........................... 453
Trailer towing ....................................... 224
TRAC ........................................................ 204
Traction control..................................... 204
Transmission shift switches........ 149, 151
Trip meter ................................................. 159
Trunk Opener ...................................................... 47
Trunk light Trunk light ................................................ 48
Wattage ................................................... 541
Turn signal lights
Replacing light bulbs ........................444
Switch........................................................ 156
Wattage ................................................... 541
Vanity lights Vanity lights...........................................347
Wattage ................................................... 541
Vanity mirrors ........................................ 347
VDIM......................................................... 204
Vehicle dynamics integrated
management ....................................... 204
Vehicle identification number ......... 527
Vehicle stability control ..................... 204
Ventilators ............................................... 355
VSC ........................................................... 204T
V

582
10_IS250C/350C_U
What to do if...
What to do if...
A tire puncturesP. 4 8 6If you have a flat tire
The engine does not start
P. 4 9 7If the engine will not start
P. 9 3Engine immobilizer system
P. 5 0 6If the vehicle battery is discharged
The shift lever cannot be
moved outP. 4 9 9If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 5 0 9If your vehicle overheats
The key is lostP. 5 0 0If you lose your keys
The battery runs outP. 5 0 6If the vehicle battery is discharged
The doors cannot be lockedP. 4 3Doors
The horn begins to soundP. 9 5Alarm
The vehicle is stuck in mud or
sandP. 5 1 2If the vehicle becomes stuck