immobilizer Lexus IS250 2012 Using the air conditioning system and defogger / LEXUS 2012 IS250,IS350 OWNERS MANUAL (OM53A87U)

TABLE OF CONTENTSIndex
2
1-1. Key informationKeys ...................................................... 28
1-2. Opening, closing and locking the doors and trunk
Smart access system with push-button start .......................... 33
Wireless remote control .............. 45
Doors.................................................... 48
Trunk..................................................... 52
1-3. Adjustable components (seats, mirrors,
steering wheel)
Front seats .......................................... 56
Driving position memory ............ 58
Head restraints................................. 62
Seat belts ............................................ 65
Steering wheel (manually adjustable type)............................. 72
Steering wheel (power-adjustable type)............ 73 Anti-glare inside rear view
mirror ................................................ 75
Outside rear view mirrors ........... 77
1-4. Opening and closing the windows and moon roof
Power windows............................... 80
Moon roof .......................................... 83
1-5. Refueling Opening the fuel tank cap........... 87
1-6. Theft deterrent system Engine immobilizer system ......... 90
Alarm.................................................... 92
Theft prevention labels (U.S.A.) ............................................. 95
1-7. Safety information Correct driving posture ............... 96
SRS airbags ....................................... 98
Front passenger occupant classification system .................. 109
Child restraint sy stems ................. 114
Installing child restraints .............. 118
1Before driving
For vehicles with a navigation system, refer to the “Navigation System Owner’s
Manual” for information regarding the equipment listed below.
• Navigation system
• Air conditioning
• Climate control
• Rear view monitor system • Audio/video system
• Rear window and outside rear view
mirror defogging
• Intuitive parking assist

Before driving1
27
1-1. Key informationKeys .............................................. 28
1-2. Opening, closing and locking the doors and
trunk
Smart access system with push-button start ................... 33
Wireless remote control ......... 45
Doors ........................................... 48
Trunk ............................................. 52
1-3. Adjustable components
(seats, mirrors,
steering wheel)
Front seats ................................... 56
Driving position memory ....... 58
Head restraints .......................... 62
Seat belts ..................................... 65
Steering wheel (manually adjustable type) ...................... 72
Steering wheel (power-adjustable type) ....... 73
Anti-glare inside rear view mirror ......................................... 75
Outside rear view mirrors ...... 77 1-4. Opening and closing the
windows and moon roof
Power windows .......................... 80
Moon roof ................................... 83
1-5. Refueling Opening the fuel tank cap ..... 87
1-6. Theft deterrent system Engine immobilizer system........................................ 90
Alarm............................................ 92
Theft prevention labels (U.S.A.)...................................... 95
1-7. Safety information Correct driving posture ......... 96
SRS airbags ................................ 98
Front passenger occupant classification system............ 109
Child restraint systems .......... 114
Installing child restraints........ 118

90
1-6. Theft deterrent system
Engine immobilizer system
The vehicle's keys have built-in transponder chips that prevent the engine
from starting if the key has not been previously registered in the vehicle's
on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
The indicator light flashes after
the “ENGINE START STOP”
switch has been turned OFF to
indicate that the system is oper-
ating.
The indicator light stops flashing
after the “ENGINE START
STOP” switch has been turned
to ACCESSORY or IGNITION
ON mode to indicate that the
system has been canceled.

91
1-6. Theft deterrent system
1
Before driving
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key to the security system (key
with a built-in transponder chip) of another vehicle
■Certifications for the engine immobilizer system For vehicles sold in the U.S.A.
FCC ID: NI4TMIMB-1
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
For vehicles sold in Canada
NOTE:
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must a ccept any interference, including interfer-
ence that may cause undesired operation of the device.
NOTE:
L’utilisation de ce dispositif est autori sée seulement aux deux conditions suivantes:
(1) il ne doit pas produire de brouillage, et (2) l’utilisateur du dispositif doit être prêt
à accepter tout brouillage radioélectrique reçu, même si ce brouillage est suscepti-
ble de compromettre le fonc tionnement du dispositif.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation
of the system cannot be guaranteed.

144
2-1. Driving procedures
■If the engine does not start
The engine immobilizer system may not have been deactivated. (P. 9 0 )
■When the steering lock cannot be released
■When the “ENGINE START STOP” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus
dealer immediately.
■Auto power off function
If the vehicle is left in ACCESSORY mode fo r more than an hour with the shift lever
in P (vehicles with an automatic transmission), the “ENGINE START STOP” switch
will automatically turn OFF.
■Electronic key battery depletion
 P. 3 9
■When the electronic key battery is fully discharged
P. 4 3 3
■Conditions affecting operation
P. 3 7
■Note for the entry function
P. 4 0
The “ENGINE START STOP” switch indica-
tor will flash in green and a message will be
shown on the multi-information display. Press
the “ENGINE START STOP” switch again
while turning the steering wheel left and right.

5
When trouble arises
501
5-2. Steps to take in an emergency
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (
P. 141), consider each of the following points.
■The engine will not start even when the starter motor operates
normally.
One of the following may be the cause of the problem.
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( P. 141)
● There may be a malfunction in the engine immobilizer system.
( P. 9 0 )
■ The starter motor turns over slow ly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
One of the following may be the cause of the problem.
● The battery may be discharged. ( P. 510)
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn over, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( P. 510)
● There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

581
Alphabetical index
If you have a flat tire ........................ 492
If you lose your keys ........................ 504
If you think something is wrong................................................... 469
If your vehicle becomes stuck ......516
If your vehicle has to be stopped in an emergency.............................. 518
If your vehicle needs to be towed ................................................... 463
If your vehicle overheats.................. 513
Emergency flashers Switch ...................................................... 462
Engine Compartment ..................................... 397
Engine switch .......................................... 141
Hood ....................................................... 394
How to start the engine...................... 141
Identification number......................... 521
If the engine will not start ................ 501
Ignition switch.......................................... 141
Overheating........................................... 513
Engine compartment cover............. 399
Engine coolant Capacity..................................................527
Checking ............................................... 404
Preparing and checking before winter .................................... 206 Engine coolant temperature
gauge....................................................... 158
Engine immobilizer system..................90
Engine oil Capacity .................................................524
Checking ................................................ 401
Preparing and checking before winter ................................... 206
EPS .............................................................. 196
Event data recorder .................................21
First-aid kit storage belt ..................... 357
Floor mat ..................................................356
Fluid Brake ....................................................... 406
Washer ...................................................... 411
Fog lights Switch.........................................................176
Wattage ................................................. 536
Footwell lights ........................................ 325
Front fog lights Switch.........................................................176
Wattage ................................................. 536
Front passenger occupant classification system .......................... 109
Front passenger's seat belt reminder light...................................... 473
F
*: For vehicles with a navigation system, refe r to the “Navigation System Owner’s Manual”.

586
Alphabetical index
Smart access system with push-button startEntry function.......................................... 33
Starting the engine ................................141
Spare tire Inflation pressure................................ 424
Storage location ................................. 492
Spark plug ................................................ 527
Specifications .........................................520
Speedometer Speed indicator ................................... 158
Speedometer........................................ 158
Steering wheel Audio switches* ................................. 273
Manual adjustment ............................... 72
Power adjustment .................................73
Steering wheel positionmemory.................................................. 58
Storage feature......................................329
Stuck If your vehicle becomes stuck...... 516
Sun visors .................................................336
Sunshade Rear .......................................................... 352
Roof ............................................................. 84 Switch
ECT switch ............................................. 147
Emergency flasher switch..............462
Engine switch .......................................... 141
ETCS switch .......................................... 153
Fog light switch .................................... 176
Hazard light switch ...........................462
Ignition switch ......................................... 141
Light switches.........................................172
Power door lock switch.................... 48
Power window switch ....................... 80
Satellite switches................................ 339
Transmission shift switches ............ 149
Window lock switch ........................... 80
Wiper and washer switch ............... 178
Tachometer Tacho indicator ....................................158
Tachometer............................................158
Tail lights Switch .........................................................172
Talk switch* ............................................. 299
Telephone switch* ............................... 298
Theft deterrent system Alarm........................................................... 92
Engine immobilizer system ............. 90
Theft prevention labels.......................... 95
Tire inflation pressure ......................... 424
T

590
What to do if...
What to do if...
A tire puncturesP. 4 9 2If you have a flat tire
The engine does not start
P. 5 0 1If the engine will not start
P. 9 0Engine immobilizer system
P. 5 1 0If the vehicle battery is discharged
The shift lever cannot be
moved out of PP. 5 0 3If 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 1 3If your vehicle overheats
The key is lostP. 5 0 4If you lose your keys
The battery runs outP. 5 1 0If the vehicle battery is discharged
The doors cannot be lockedP. 4 8Doors
The horn begins to soundP. 9 2Alarm
The vehicle is stuck in mud or
sandP. 5 1 6If the vehicle becomes stuck