immobilizer Lexus IS250C 2010 Do-It-Yourself Maintenance / LEXUS 2010 IS350C IS250C OWNERS MANUAL (OM53A24U)

TABLE OF CONTENTSIndex
2
1-1. Key informationKeys ...................................................... 24
1-2. Opening, closing and locking the doors and trunk
Smart access system with push-button start .......................... 28
Wireless remote control .............. 40
Doors.................................................... 43
Trunk..................................................... 47
1-3. Adjustable components (seats, mirrors,
steering wheel)
Front seats ........................................... 51
Driving position memory (driver’s seat) ................................. 56
Seat position memory (front passenger’s seat) ............. 60
Head restraints................................. 62
Seat belts ............................................ 65
Steering wheel.................................. 72
Anti-glare inside rear view mirror ................................................ 74
Outside rear view mirrors ........... 75 1-4. Opening and closing the
windows and retractable
hardtop
Power windows................................ 78
Retractable hardtop........................ 81
1-5. Refueling Opening the fuel tank cap........... 90
1-6. Theft deterrent system Engine immobilizer system ......... 93
Alarm.................................................... 95
Theft prevention labels (U.S.A.) ............................................. 97
1-7. Safety information Correct driving posture ............... 98
SRS airbags ..................................... 100
Front passenger occupant classification system ..................... 111
Child restraint sy stems ................. 116
Installing child restraints ............. 120
1Before driving

Before driving1
23
1-1. Key informationKeys ............................................... 24
1-2. Opening, closing and locking the doors and
trunk
Smart access system with push-button start ................... 28
Wireless remote control ........ 40
Doors ............................................ 43
Trunk ............................................. 47
1-3. Adjustable components
(seats, mirrors,
steering wheel)
Front seats .................................... 51
Driving position memory (driver’s seat) ........................... 56
Seat position memory (front passenger’s seat) ........ 60
Head restraints .......................... 62
Seat belts ..................................... 65
Steering wheel ........................... 72
Anti-glare inside rear view mirror ............................... 74
Outside rear view mirrors ...... 75 1-4. Opening and closing
the windows and
retractable hardtop
Power windows .......................... 78
Retractable hardtop ................. 81
1-5. Refueling Opening the fuel tank cap ..... 90
1-6. Theft deterrent system Engine immobilizer system.... 93
Alarm............................................ 95
Theft prevention labels (U.S.A.)...................................... 97
1-7. Safety information Correct driving posture ......... 98
SRS airbags .............................. 100
Front passenger occupant classification system............... 111
Child restraint systems ........... 116
Installing child restraints....... 120

93
1
Before driving
1-6. Theft deterrent system
Engine immobilizer system
■System maintenance
The vehicle has a maintenance-free type of 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
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.

94
1-6. Theft deterrent system
■Certifications for the engine immobilizer system For vehicles sold in the U.S.A.
FCC ID: NI4TMIMB-1
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.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.
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 ra dioélectrique reçu, même si ce brouillage est suscepti-
ble de compromettre le fonc tionnement du dispositif.
CAUTION
FCC WARNING:
Changes or modifications no t expressly approved by the party responsible for com-
pliance could void the user’s authority to operate the equipment.
NOTICE
■To ensure the system correctly
Do not modify and remove the system. If modified or removed, the proper opera-
tion of the system cannot be guaranteed.

145
2-1. Driving procedures
2
When driving
■If the engine does not start
The engine immobilizer system may not have been deactivated. (P. 9 3 )
■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 4
■When the electronic key battery is fully discharged
P. 4 3 1
■Conditions affecting operation
P. 3 2
■Note for the entry function
P. 3 5
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
503
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. 142), 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. 142)
● There may be a malfunction in the engine immobilizer system.
( P. 9 3 )
■ 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. 512)
● 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. 512)
● 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.

583
Alphabetical index
EngineCompartment ..................................... 398
Engine switch ........................................ 142
Hood ....................................................... 395
How to start the engine.................... 142
Identification number....................... 533
If the engine will not start ...............503
Ignition switch........................................ 142
Overheating...........................................515
Engine compartment cover............. 400
Engine coolant Capacity................................................. 537
Checking ............................................... 404
Preparing and checking before winter .................................... 220
Engine coolant temperature gauge .......................................................160
Engine immobilizer system ..................93
Engine oil Capacity................................................. 536
Checking .................................................401
Preparing and checking before winter .................................... 220
Engine oil maintenance data ........... 403
EPS............................................................. 204
Event data recorder............................. 467 Floor mat ................................................. 358
Fluid
Brake ....................................................... 406
Washer ...................................................... 411
Fog lights Switch......................................................... 177
Wattage .................................................. 547
Foot well lights ...................................... 338
Front fog lights Switch......................................................... 177
Wattage .................................................. 547
Front passenger occupant classification system ............................. 111
Front passenger's seat belt reminder light........................................471
Front seats Adjustment .................................................51
Driving position memory ..................56
Seat position memory ........................60
Front turn signal lights Switch........................................................ 156
Wattage .................................................. 547
Fuel Capacity ................................................ 535
Fuel gauge.............................................. 160
Fuel pump shut off system............ 466
Information ........................................... 548
Refueling....................................................90
Fuel door .....................................................90
Fuel filler door ...........................................90
Fuel pump shut off system ................. 466
Fuses .......................................................... 433F

588
Alphabetical index
TachometerTacho indicator.................................... 160
Tachometer ........................................... 160
Tail lights Switch ........................................................ 174
Talk switch ..................................................311
Telephone switch .....................................311
Theft deterrent system Alarm .......................................................... 95
Engine immobilizer system ............. 93
Theft prevention labels .......................... 97
Tire inflation pressure ......................... 422
Tire information Glossary................................................. 557
Size ...........................................................554
Tire identification number .............553
Uniform tire quality grading ........ 555
Tires Chains ..................................................... 220
Checking ................................................. 412
If you have a flat tire .......................... 492
Inflation pressure................................ 422
Inflation pressure sensor.................. 413
Information............................................. 551
Replacing ............................................... 492
Rotating tires .......................................... 412
Run-flat tire............................................. 501
Size ........................................................... 542
Snow tires .............................................. 220
Spare tire................................................ 492
Tools ........................................................... 492
Total load capacity ................................ 219 Towing
Dinghy towing .........................225, 226
Emergency towing ........................... 459
Trailer towing ....................................... 224
TRAC ........................................................ 204
Traction control..................................... 204
Transmission shift switches........ 149, 151
Trip meter ................................................. 160
Trunk Opener ...................................................... 47
Trunk light Trunk light ................................................ 48
Wattage ..................................................547
Turn signal lights Replacing light bulbs ....................... 450
Switch ........................................................ 156
Wattage ..................................................547
Vanity lights Vanity lights...........................................347
Wattage ..................................................547
Vanity mirrors ........................................ 347
VDIM......................................................... 204
Vehicle dynamics integrated management ....................................... 204
Vehicle identification number......... 533
Vehicle stability control ..................... 204
Ventilators ............................................... 355
Voice command switch .......................312
VSC ........................................................... 204T
V

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 3If the engine will not start
P. 9 3Engine immobilizer system
P. 5 1 2If the vehicle battery is discharged
The shift lever cannot be
moved outP. 5 0 5If 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 5If your vehicle overheats
The key is lostP. 5 0 6If you lose your keys
The battery runs outP. 5 1 2If 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 8If the vehicle becomes stuck