Lexus IS F 2011 Service Manual

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1-2. Opening, closing and locking the doors and trunk
IS F_EE
Antenna location and effective range
Antenna location
Antennas outside cabin
Antennas inside cabin
Antenna inside trunk
Antenna outside trunk

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1-2. Opening, closing and locking the doors and trunk
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IS F_EEEffective range (areas within which the electronic key is
detected)
When locking or unlock-
ing the doors
The system can be operated
when the electronic key is
within about 70 cm (2.3 ft.)
of either of the outside
front door handles. (Only
the doors detecting the key
can be operated.)
When unlocking the
trunk
The system can be operated
when the electronic key is
within about 70 cm (2.3 ft.)
of the trunk release button.
When starting the engine
or changing “ENGINE
START STOP” switch
modes
The system can be operated
when the electronic key is
inside the vehicle.

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Operation signals
Doors: The emergency flashers flash to indicate that the doors have been
locked/unlocked. (Locked: Once; Unlocked: Twice)
Windows and moon roof: A buzzer sounds to indicate that the windows and
moon roof are operating.
Conditions affecting operation
The smart entry & start system uses weak radio waves. In the following sit-
uations, the communication between the electronic key and the vehicle may
be affected, preventing the smart entry & start system and wireless remote
control from operating properly:
(Ways of coping: P. 458)
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 elec-
trical noise
When carrying a portable radio, cellular phone, cordless phone or other
wireless communication devices
When the electronic key is in contact with, or is covered by the follow-
ing 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 multiple electronic keys are in the vicinity
When another wireless key (that emits radio waves) is being used nearby
When carrying or using 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 computer or personal digital assistant (PDA)
• Digital audio player
• Portable game system
If window tint with a metallic content or metallic objects are attached to
the rear window

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1-2. Opening, closing and locking the doors and trunk
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Switching the door unlock function
It is possible to set which doors the entry function unlocks.
Turn the “ENGINE START STOP” switch OFF.
Cancel the intrusion sensor of the alarm system to prevent unin-
tended triggering of the alarm during the setting change. (P. 97)
When the indicator on the key surface is turned off, push and
hold or for approximately 5 seconds while pushing
on the key.
The setting changes each time an operation is performed, as shown below.
(When changing the setting continuously, release the buttons, wait for at
least 5 seconds, and repeat step 3.)
To prevent unintended triggering of the alarm, unlock the doors using the
wireless remote control and open and close a door once after the settings
have been changed. (If a door is not opened within 30 seconds after is
pressed, the doors will be locked again and the alarm will automatically be
set.)
In case that the alarm is triggered, immediately stop the alarm. (P. 9 7 )
STEP1
STEP2
STEP3
Multi-informa-
tion displayUnlocking doorsBeep
Hold either front door han-
dle to unlock all doors.Exterior: Beeps twice
Interior: Pings once
Hold the driver's door han-
dle to unlock only the
driver's door.
Exterior: Beeps three
times
Interior: Pings once
Hold the front passenger’s
door handle to unlock all
doors.

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Battery-saving function
In the following circumstances, the entry function is disabled in order to
prevent the vehicle and electronic key batteries from discharging.
When the entry function has not been used for 30 days or more
When the electronic key has been left within approximately 1 m (3 ft.) of
the vehicle for 10 minutes or more
The system will resume operation when...
The vehicle is locked using the door handle lock switch.
The vehicle is locked/unlocked using the wireless remote control func-
tion.
(P. 52)
The vehicle is locked/unlocked using the mechanical key. (P. 458)
Electronic key battery depletion
The standard battery life is 1 to 2 years. (The card key battery life is
about a year and a half.)
If the battery becomes low, an alarm will sound in the cabin when the
engine stops. (P. 440)
The battery becomes depleted even if the electronic key is not used
because the key always receives radio waves. If the smart entry & start
system or the wireless remote control does not operate, or the detection
area becomes smaller, the battery may be depleted. Replace the battery
when necessary.
(P. 388)
To avoid serious deterioration, do not leave the electronic key within 1 m
(3 ft.) of the following electrical appliances that produce a magnetic
field.
•TVs
• Personal computers
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
• Glass top ranges
• Table lamps

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To operate the system properly
Make sure to carry the electronic key when operating the system. Do not get
the electronic key too close to the vehicle when operating the system from
the outside of the vehicle.
Depending on the position and holding condition of the electronic key, the
key may not be detected correctly and the system may not operate properly.
(The alarm may go off accidentally, or the door lock prevention may not
function.)
Note for the entry function
Even when the electronic key is within the effective range (detection
areas), the system may not operate properly in the following cases.
• The electronic key is too close to the window or outside door handle,
near the ground, or in a high place when the doors are locked or
unlocked.
• The electronic key is near the ground or in a high place, or too close to
the rear bumper center when the trunk is unlocked.
• The electronic key is on the instrument panel, rear package tray or
floor, or in the glove box when the engine is started or “ENGINE
START STOP” switch modes are changed.
Do not leave the electronic key on top of the instrument panel or near the
door pockets when exiting the vehicle. Depending on the radio wave
reception conditions, it may be detected by the antenna outside the cabin
and the door will become lockable from the outside, possibly trapping
the electronic key inside the vehicle.
As long as the electronic key is within the effective range, the doors may
be locked or unlocked by anyone.
Even if the electronic key is not inside the vehicle, it may be possible to
start the engine if the electronic key is near the window.
The doors may unlock if a large amount of water splashes on the door
handle, such as in the rain or in a car wash. (The doors will automatically
be locked after approximately 30 seconds if the doors are not opened and
closed.)
Gripping the door handle when wearing a glove may not unlock the
door.
If the wireless remote control is used to lock the doors when the elec-
tronic key is near the vehicle, there is a possibility that the door may not
be unlocked by the entry function. (Use the wireless remote control to
unlock the doors.)
A sudden approach to the effective range or door handle operation may
prevent the doors from being unlocked. In this case, return the door han-
dle to the original position and check that the doors unlock before pulling
the door handle again.

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When the vehicle is not driven for extended periods
To prevent theft of the vehicle, do not leave the electronic key within 2 m (6
ft.) of the vehicle.
Security feature
If a door is not opened within approximately 30 seconds after the vehicle is
unlocked, the anti-theft system automatically locks the vehicle again.
Alarms and warning indicators
A combination of exterior and interior alarms as well as warnings displayed
on the multi-information display is used to prevent theft of the vehicle and
unforeseeable accidents resulting from erroneous operation. Take appropri-
ate measures in response to any warning indications on the multi-informa-
tion display. (P. 431)
The following table describes circumstances and correction procedures
when only alarms are sounded.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 2
seconds
Tried to lock the doors
using the entry function
while the electronic key is
still inside the passenger
compartmentRetrieve the electronic
key from the passen-
ger compartment and
lock the doors again.
Closed the trunk while the
electronic key is still
inside and all doors are
lockedRetrieve the electronic
key from the trunk
and close the trunk
lid.
Exterior alarm
sounds once for
Tried to exit the vehicle
with the electronic key and
lock the doors without first
tith“ENGINE
Turn the “ENGINE
START STOP” switch
OFF d l k th

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If the smart entry & start system does not operate properly
Locking and unlocking the doors and trunk: Use the mechanical key.
(P. 458)
Starting the engine:P. 4 6 0
When the electronic key battery is fully depleted
P. 3 8 8
Customization that can be configured at any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
It is possible to deactivate the operation signals of the system.
(Customizable features P. 484)
AlarmSituationCorrection procedure
Exterior alarm
sounds once for
10 secondsTried to lock the vehicle
using the entry function
while a door is openClose all of the doors
and lock the doors
again.
Interior alarm
sounds continu-
ouslyTried to open the door and
exit the vehicle without
shifting the shift lever to PShift the shift lever to
P.
Interior alarm
pings continu-
ously
Switched to ACCESSORY
mode while the driver's
door is open (Opened the
driver's door when the
“ENGINE START STOP”
switch is in ACCESSORY
mode.)
Close the driver's
door.
Turned the “ENGINE
START STOP” switch
OFF while the driver's
Close the driver's
door