ECU lexus LFA 2012 Technical Information / LEXUS 2012 LFA OWNERS MANUAL (OM77006U)

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1-2.Opening, closing and locking the doors
Wireless remote control
The wireless remote control can be used to lock and unlock the vehicle from
outside the vehicle.
Locks both side doors
Unlocks both side doors
Pressing the button unlocks the
driver’s door. Pressing the button
again within 3 seconds unlocks the
other door.
Opens the windows (press and
hold)
*
*: This setting must be customizedat your Lexus dealer.
■Operation signals
The emergency flashers flash to indicate that the doors have been locked/unlocked.
(Locked: Once; Unlocked: Twice)
■Alarm
Using the key or wireless remote control to lock the doors will set the alarm system.
■Wireless remote control battery depletion
If the wireless remote control function does not operate, the battery may be
depleted. Replace the battery when necessary. ( P. 2 8 5 )
■Security feature
If a door is not opened within approx imately 60 seconds after the vehicle is
unlocked, the anti-theft system automatically locks the vehicle again.

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1-2. Opening, closing and locking the doors
1
Before driving
CAUTION
■Using the luggage compartment
Observe the following precautions.
Failure to do so may cause parts of the body to be caught, resulting in serious injury.
●Remove any heavy loads, such as snow and ice, from the rear hatch before open-
ing it. Failure to do so may cause the rear hatch to fall closed again after it is
opened.
●When opening or closing the rear hatch, thoroughly check to make sure the sur-
rounding area is safe.
●If anyone is in the vicinity, make sure they are safe and let them know that the rear
hatch is about to open or close.
●Use caution when opening or closing the rear hatch in windy weather as it may
move abruptly in strong wind.
●Do not attach any accessories to the rear hatch. Such additional weight on the
rear hatch may cause the rear hatch to fall closed again after it is opened.
●The rear hatch may fall if it is not opened
fully. It is more difficult to open or close the
rear hatch on an incline than on a level sur-
face, so beware of the rear hatch unexpect-
edly opening or closing by itself. Make sure
that the rear hatch is fully open and secure
before using the luggage compartment.
●When closing the rear hatch, take extra
care to prevent your fingers etc. from being
caught.
●When closing the rear hatch, make sure to
press it lightly on its outer surface.

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1-3. Adjustable components (seats, mirrors, steering wheel)
1
Before driving
CAUTION
■If the seat belt guide is disengaged
●Make sure that the seat belt guide is securely fixed before driving.
●After using the seatback fold and return switch, make sure that the seat belt
passes through the seat belt guide.
■Avoiding burns when using the seat heaters
●Use caution when seating the following pers ons in a seat with the seat heater on
to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the physically challenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs,
cold remedies, etc.)
●Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature of the
seat and may lead to overheating.
●Do not use the seat heater more than necessary. Doing so may cause minor
burns or overheating.
NOTICE
■To prevent seat heater damage
Do not put heavy objects that have an unev en surface on the seat and do not stick
sharp objects (needles, nail s, etc.) into the seat.
■To prevent battery discharge
Turn the seat heaters off when the engine is not running.

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1
1-3. Adjustable components (seats, mirrors, steering wheel)
Before driving
Steering wheel
The steering wheel can be adjusted to a comfortable position.
Hold the steering wheel and push
the lever down.
Adjust to the ideal position by
moving the steering wheel hori-
zontally and vertically.
After adjustment, pull the lever up
to secure the steering wheel.
STEP1
STEP2
CAUTION
■Caution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an accident,
resulting in death or serious injury.
■After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
Otherwise, the steering wheel may move suddenly, possibly causing an accident,
and resulting in death or serious injury.

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1-5. Refueling
1
Before driving
CAUTION
■When refueling the vehicle
Observe the following precautions while refueling the vehicle.
Failure to do so may result in death or serious injury.
●Touch a metal surface (such as a static discharge plate if available) to discharge
any static electricity. As the vehicle body is made of resin touching the vehicle
body will not discharge static electricity.
Sparks resulting from discharging static electricity may cause the fuel vapors to
ignite.
●Always hold the grips on the fuel tank cap and turn it slowly to remove it.
A whooshing sound may be heard when the fuel tank cap is loosened. Wait until
the sound cannot be heard before fully removing the cap.
In hot weather, pressurized fuel may spra y out the filler neck and cause injury.
●Do not allow anyone that has not discharged static electricity from their bodies to
come close to an open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances that are harmful if inhaled.
●Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire.
●Do not return to the vehicle or touch an y person or object that is statically
charged.
This may cause static electricity to build up , resulting in a possible ignition hazard.
■When refueling
Securely insert the fuel nozzle into the fuel filler neck. When the fuel tank is filled to
the maximum level, the automatic shut of f function will engage. Do not continue
fueling once the automatic shut off function engages, as this may result in fuel over-
flowing from the tank.
■When replacing the fuel cap
Do not use anything but a genuine Lexus fuel tank cap designed for your vehicle.
Failure to do so may cause a fire or other incident which may result in death or seri-
ous injury.

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1
Before driving
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.
■ Setting and canceling the engine immobilizer system
U.S.A.
The system will set after the key has been removed from the ignition
switch.
The system will be canceled when the registered key is inserted into the
ignition switch.
Canada
The indicator light flashes after the
key has been removed from the
ignition switch to indicate that the
system is operating.
The indicator light stops flashing
after the registered key has been
inserted into the ignition switch 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 to the security system (key
with a built-in transponder chip) of another vehicle

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1-6. Theft deterrent system
Tilt sensorThe tilt sensor detects changes in vehicle inclination, such as when the
vehicle is towed away.
This system is designed to deter and p revent vehicle theft but does not
guarantee absolute security against all tilts.
The tilt sensor can be canceled using the cancel switch.
Canceling the tilt sensor
Remove the key from the ignition
switch and press the tilt sensor
cancel switch in the glove box.
To set the alarm with the tilt sensor
disabled, the alarm must be set
within 5 minutes after canceling
the sensor.
The tilt sensor will revert to on each
time the ignition switch is turned to
the “ON” position.
To cancel the tilt sensor, perform the necessary procedure each time
canceling the sensors is desired.

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1-7. Safety information
1
Before driving
Airbag system componentsYour vehicle is equipped with AD VANCED AIRBAGS designed based
on US motor vehicle sa fety standards (FMVSS208). The airbag system
controls airbag deployment power for the driver and passenger. The
driver airbag system consist s of the driver’s seat position sensor etc. The
passenger’s airbag system consists of the passenger occupant classifica-
tion sensor etc. Passenger airbag
Seat belt airbag sensors
Occupant detection system
ECU
Occupant detection system
sensor
Seat belt buckle switches
Seat belt airbags
Airbag sensor assembly
Driver's seat position sensor
Driver’s knee airbag
Driver airbag
SRS warning light
“A I R B A G O N ” a n d “A I R
BAG OFF” indicator lights
Front airbag and seat belt air-
bag sensors

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1-7. Safety information
1
Before driving
CAUTION
■SRS airbag precautions
●The SRS passenger airbag also deploys with considerable force, and can cause
death or serious injury especially if the passenger is very close to the airbag. The
passenger seat should be as far from the airbag as possible with the seatback
adjusted, so the passenger sits upright.
●Improperly seated and/or restrained infants and children can be killed or seri-
ously injured by a deploying airbag. An infant or child who is too small to use a
seat belt should be properly secured using a child restraint system. Lexus strongly
recommends that all infants and children be properly restrained. The rear seats
are the safest for infants and children. ( P. 76 )
●Do not sit on the edge of the seat or lean
against the dashboard.
●Do not allow a child to stand in front of the
SRS passenger airbag unit or sit on the
knees of a passenger.
●Do not drive the vehicle while the driver or
passenger have items resting on their
knees.
●Do not attach anything to or lean anything
against areas such as the dashboard, steer-
ing wheel pad, seat belt, or lower portion of
the instrument panel.
These items can become projectiles when
SRS driver, passenger, seat belt and knee
airbags deploy.

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1-7. Safety information
CAUTION
■Child restraint precautions
●For effective protection in automobile accidents and sudden stops, a child must
be properly restrained, using a seat belt or child restraint system depending on
the age and size of the child. Holding a child in your arms is not a substitute for a
child restraint system. In an accident, th e child can be crushed against the wind-
shield, or between you and the vehicle's interior, causing death or serious injury.
●Never install a rear-facing child restraint system on the passenger seat even if the
“AIR BAG OFF” indicator light is illuminated. In the event of an accident, the force
of the rapid inflation of the passenger ai rbag can cause death or serious injury to
the child if the rear-facing child restraint system is installed on the passenger seat.
●A forward-facing child restraint system may be installed on the passenger seat
only when it is unavoidable. Adjust the seatback as upright as possible and always
move the seat as far back as possible even if the “AIR BAG OFF” indicator light is
illuminated, because the passenger airbag could inflate with considerable speed
and force. Otherwise, the child may be killed or seriously injured.
●Make sure you have complied with all inst allation instructions provided by the
child restraint manufacturer and that the sy stem is properly secured. If it is not
secured properly, it may cause death or seri ous injury to the child in the event of a
sudden stop, sudden swerve or an accident.
●When installing a child restraint system, do not add clips to the shoulder belt, as
doing so may prevent the seat belt airbags from operating properly.
●After using the child restraint system, check the vehicle's seat belt for any dam-
age. If the seat belt is damaged, have it replaced by any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.