2014 Lexus IS250 immobilizer

TABLE OF CONTENTS2
IS250_EE(OM53C51E)
For your information ...................................8
Reading this manual .................................. 10
How to search................................................ 11
Pictorial index .............................................. 12
1-1. For safe use
Before driving ................................. 32
For safety drive ...............................34
Seat belts .......................................... 36
SRS airbags ...................................... 41
Airbag manual on-off
system ............................................. 52
Pop Up Hood..................................54
Safety information for
children........................................... 57
Child restraint systems............... 58
Installing child restraints ............. 67
Exhaust gas precautions .............76
1-2. Theft deterrent system
Engine immobilizer system ....... 77
Double locking system................82
Alarm .................................................832. Instrument cluster
Warning lights and
indicators .......................................90
Gauges and meters ..................... 95
Multi-information display.........100
Fuel consumption
information.................................. 106
3-1. Key information
Keys.....................................................112
3-2. Opening, closing and
locking the doors and trunk
Doors ................................................ 118
Trunk ................................................. 125
Smart entry & start system ...... 130
3-3. Adjusting the seats
Front seats .......................................147
Rear seats ....................................... 149
Driving position memory ...........151
Head restraints............................. 156
1For safety and security
2Instrument cluster
3Operation of
each component

31
1For safety and security
IS250_EE(OM53C51E)
1-1. For safe use
Before driving................................. 32
For safety drive............................... 34
Seat belts .......................................... 36
SRS airbags .......................................41
Airbag manual on-off
system ............................................. 52
Pop Up Hood ................................. 54
Safety information for
children .......................................... 57
Child restraint systems ...............58
Installing child restraints..............67
Exhaust gas precautions ............. 76
1-2. Theft deterrent system
Engine immobilizer system ........77
Double locking system ............... 82
Alarm .................................................83

77
1
For safety and security
IS250_EE(OM53C51E)1-2. Theft deterrent system
The indicator light flashes after the
engine switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the engine switch has been turned to
ACCESSORY or IGNITION ON
mode to indicate that the system has
been canceled.
■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 registered to the security system (key
with a built-in transponder chip) of another vehicle
Engine immobilizer system
The vehicle’s keys have built-in transponder chips that prevent the engine
from starting if a 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.
This system is designed to help prevent vehicle theft but does not guarantee
absolute security against all vehicle thefts.

781-2. Theft deterrent system
IS250_EE(OM53C51E)
■Certifications for the engine immobilizer system

1323-2. Opening, closing and locking the doors and trunk
IS250_EE(OM53C51E)
■Conditions affecting operation
The smart entry & start system uses weak radio waves. In the following situations, the
communication between the electronic key and the vehicle may be affected, preventing
the smart entry & start system, wireless remote control and engine immobilizer system
from operating properly. (Ways of coping: →P. 5 2 4 )
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas station, radio station, large display, airport or
other facility that generates strong radio waves or electrical noise
●When carrying a portable radio, cellular phone, cordless phone or other wireless com-
munication device
●When the electronic key is in contact with, or is covered by the following metallic
objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless keys (that emit radio waves) are being used nearby
●When carrying the electronic key together with the following devices that emit radio
waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or metallic objects are attached to the rear win-
dow

1944-2. Driving procedures
IS250_EE(OM53C51E)
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or IGNITION ON
mode (the engine is not running) for more than an hour with the shift lever in P, the engine
switch will automatically turn off. However, this function cannot entirely prevent battery
discharge. Do not leave the vehicle with the engine switch in ACCESSORY or IGNI-
TION ON mode for long periods of time when the engine is not running.
■Electronic key battery depletion
→P. 1 1 5
■Conditions affecting operation
→P. 1 3 2
■Notes for the entry function
→P. 1 3 3
■If the engine does not start
●Check that the shift lever is securely set in P. The engine may not start if the shift lever is
displaced out of P.
●The engine immobilizer system may not have been deactivated. (→P. 77)
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
■Steering lock
After turning the engine switch off and opening and closing the doors, the steering wheel
will be locked due to the steering lock function. Operating the engine switch again auto-
matically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, operation of the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time. In this case,
refrain from operating the engine switch. After about 10 seconds, the steering lock
motor will resume functioning. “Steering Lock active” will be displayed on the
multi-information display.
Check that the shift lever is in P. Press the
engine switch while turning the steering wheel
left and right.

5218-2. Steps to take in an emergency
8
When trouble arises
IS250_EE(OM53C51E)
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 again following correct starting procedures.
(→P. 1 9 2 )
●There may be a malfunction in the engine immobilizer system.
(→P. 77)
One of the following may be the cause of the problem:
●The battery terminal connections may be loose or corroded.
●The battery may be discharged. (→P. 5 2 7 )
The engine starting system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. (→P. 522)
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed (→P. 192), consider each of the following points:
The engine will not start even though the starter motor operates nor-
mally.
The starter motor turns over slowly, the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
The starter motor does not turn over

572Alphabetical index
IS250_EE(OM53C51E)
E-mail .........................................................353
Eco drive mode ..................................... 263
Eco Driving Indicator ........................... 104
Eco Driving Indicator Light ............... 102
Elapsed time ..............................................101
Electric Power Steering (EPS)........ 265
Function ..................................................265
Warning light ....................................... 477
Electronic key............................................ 112
Battery-saving function...................... 131
If the electronic key does not
operate properly ............................ 524
Replacing the battery....................... 442
Emergency, in case of
If the electronic key does not
operate properly ............................ 524
If the engine will not start .................521
If the shift lever cannot be
shifted from P ................................... 523
If the vehicle battery is
discharged......................................... 527
If the warning buzzer sounds ...... 476
If the warning light turns on .......... 476
If the warning message is
displayed ............................................ 482
If you have a flat tire ............. 496, 507
If you think something
is wrong............................................... 474
If your vehicle becomes stuck..... 534
If your vehicle has to be
stopped in an emergency.......... 467
If your vehicle needs to
be towed............................................ 468
If your vehicle overheats ................. 531Emergency brake signal.................... 266
Emergency flashers ............................. 466
Emergency tire puncture
repair kit ................................................ 507
Engine ....................................................... 540
ACCESSORY mode ....................... 193
Compartment ....................................... 417
Engine switch ........................................ 192
Hood ......................................................... 415
How to start the engine ................... 192
Identification number....................... 539
If the engine will not start ................. 521
Ignition switch (engine switch) ..... 192
Overheating .......................................... 531
Engine coolant......................................... 421
Capacity................................................. 543
Checking ................................................. 421
Preparing and checking
before winter.................................... 288
Engine coolant temperature
gauge ........................................................ 95
Engine immobilizer system .................. 77
Engine oil .................................................. 418
Capacity................................................... 541
Checking ................................................. 418
Preparing and checking
before winter.................................... 288
Engine switch ...........................................192
EPS (Electric Power Steering) ....... 265
Function.................................................. 265
Warning light........................................ 477
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