Page 35 of 609

35
1-1. Key information
1
Before driving
IS250/220d/200d_EE
NOTICE
To prevent key damage
Observe the following.
Do not drop the keys, subject them to strong shocks or bend them.
Do not expose the keys to high temperatures for a long period of time.
Do not get the keys wet or wash them in an ultrasonic washer etc.
Do not attach metallic or magnetic materials to the keys or place the keys
close to such materials.
Do not disassemble the keys.
Do not attach stickers that contain materials that block radio waves, such
as metallic materials, to the key.
Do not place the keys near objects that produce magnetic fields, such as
TVs, audio systems, glass top ranges, or medical electrical equipment,
such as low-frequency therapy equipment.
Precautions for handling the card keys
Do not apply excess force when inserting the mechanical key to the card
key. Doing so may damage the card key.
If the battery or card key terminals get wet, the battery may corrode and
the card key may stop working.
If the key is dropped into water, or if drinking water etc. is spilled on the
key, immediately remove the battery cover and wipe the battery and ter-
minals. (To remove the battery cover, lightly grasp it and pull.) If the bat-
tery is corroded, have any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional, replace the battery.
Do not crush the battery cover or use a screwdriver to remove the battery
cover. Forcibly removing the battery cover may bend or damage the key.
If the battery cover is frequently removed, the battery cover may become
loose.
When installing the battery, make sure to check the direction of the bat-
tery.
Installing the battery in the wrong direction may cause the battery to
deplete rapidly.
Page 36 of 609
36
1-1. Key information
IS250/220d/200d_EE
NOTICE
The surface of the card key may be damaged, or its coating may peel off
in the following situations.
• The card key is carried together with hard objects, such as coins or
keys.
• The card key is scraped with a sharp object, such as a tip of mechanical
pencil.
• The surface of the card key is wiped with thinners or benzene.
Carrying the electronic key on your person
When carrying the key, maintain a distance of at least 10 cm (3.9 in.) from
any of the following electrical appliances with their power on. If a distance
of 10 cm (3.9 in.) is not kept, radio waves may be interfered with, causing
the key to not function correctly.
• A portable radio, cellular phone, cordless phone or other wireless com-
munication device
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
Page 37 of 609
37
1
Before driving
IS250/220d/200d_EE
1-2. Opening, closing and locking the doors and trunk
Smart entry & start system
The following operations can be performed simply by carrying the
electronic key (including the card key) on your person, for example
in your pocket.
(The driver should always carry the electronic key.)
Locks and unlocks the doors (P. 38)
Unlocks the trunk (
P. 38)
Starts the engine (
P. 1 5 3 )
: If equipped
Electronic key
Electronic keyElectronic key
Page 40 of 609
40
1-2. Opening, closing and locking the doors and trunk
IS250/220d/200d_EEEffective 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.
Page 42 of 609

42
1-2. Opening, closing and locking the doors and trunk
IS250/220d/200d_EE
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. 516)
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
Page 43 of 609

43
1-2. Opening, closing and locking the doors and trunk
1
Before driving
IS250/220d/200d_EE
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. 1 0 2 )
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
electronic key 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. 102)
STEP1
STEP2
STEP3
Multi-informa-
tion displayUnlocking doorsBeep
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.
Hold either front door han-
dle to unlock all doors.Exterior: Beeps twice
Interior: Pings once
Page 44 of 609

44
1-2. Opening, closing and locking the doors and trunk
IS250/220d/200d_EE
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 a month 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. 55)
The vehicle is locked/unlocked using the mechanical key. (P. 516)
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. 481)
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. 431)
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
Page 46 of 609

46
1-2. Opening, closing and locking the doors and trunk
IS250/220d/200d_EE
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.