Page 81 of 676
811-2. Theft deterrent system
1
For safety and security
IS200t_EE(OM53D77E)
The alarm uses light and sound to give an alert when an intrusion is detected.
The alarm is triggered in the following situations when the alarm is set:
●A locked door or trunk is unlocked or opened in any way other than using the
entry function or wireless remote control. (The door will lock again automati-
cally.)
●The hood is opened.
●The intrusion sensor detects something moving inside the vehicle. (An
intruder gets in the vehicle.) (if equipped)
●The tilt sensor detects a change of vehicle inclination. (if equipped)
Close the doors, trunk and hood, and
lock all the doors using the entry func-
tion or wireless remote control. The
system will be set automatically after
30 seconds.
The indicator light changes from being
on to flashing when the system is set.
Alarm
: If equipped
The alarm
Setting the alarm system
Page 82 of 676
821-2. Theft deterrent system
IS200t_EE(OM53D77E)
Do one of the following to deactivate or stop the alarm:
●Unlock the doors or open the trunk using the entry function or wireless
remote control.
●Start the engine. (The alarm will be deactivated or stopped after a few sec-
onds.)
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing:
●Nobody is in the vehicle.
●The windows and moon roof (if equipped) are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
Deactivating or stopping the alarm
Page 83 of 676

831-2. Theft deterrent system
1
For safety and security
IS200t_EE(OM53D77E)
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
In the following cases, depending on the situation, the door may automatically lock to
prevent improper entry into the vehicle:
●The doors are unlocked manually without the mechanical key and the alarm is trig-
gered.
●While the alarm is operating, the doors ar e unlocked manually without the mechanical
key.
●When recharging or replacing the battery
●The doors or trunk are unlocked using the
mechanical key.
●A person inside the vehicle opens a door, the
trunk or hood, or unlocks the vehicle using a
inside lock button.
●The battery is recharged or replaced when the
vehicle is locked. ( P. 620)
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modi fied or removed, the proper operation of
the system cannot be guaranteed.
Page 85 of 676

851-2. Theft deterrent system
1
For safety and security
IS200t_EE(OM53D77E)
■Canceling and automatic re-enabling of the intrusion sensor and tilt sensor
●The alarm will still be set even when the intrusion sensor and tilt sensor are canceled.
●After the intrusion sensor and tilt sensor are canceled, pressing the engine switch or
unlocking the doors using the entry function or wireless remote control will re-enable
the intrusion sensor and tilt sensor.
●The intrusion sensor and tilt sensor will automatically be re-enabled when the alarm
system is deactivated.
■Intrusion sensor dete ction considerations
The sensor may trigger the alarm in the following situations:
●Places with extreme vibrations or noises, or situations in which the vehicle is subject to
repeated impacts or vibrations:
• When parked in a parking garage
• When the vehicle is transported on a ferry, trailer, train, etc.
• When ice adhering to the vehicle is removed
• When the vehicle is in an automatic or high-pressure car wash
• When in a hail or lightning storm
●A window or the moon roof is open.
In this case, the sensor may detect the follow-
ing:
• Wind or the movement of objects such as leaves and insects inside the vehicle
• Ultrasonic waves emitted from devices
such as the intrusion sensors of other vehi-
cles
• The movement of people outside the vehi-
cle
●Unstable items, such as dangling accessories
or clothes hanging on the coat hooks, are in
the vehicle.
Page 121 of 676
121
3
Operation of
each component
IS200t_EE(OM53D77E)
3-1. Key information
Keys ...................................................122
3-2. Opening, closing and locking the doors and trunk
Doors ............................................... 128
Trunk ................................................ 135
Smart entry & start system ........ 141
3-3. Adjusting the seats Front seats.......................................157
Rear seats (folding type) .......... 159
Driving position memory ........... 161
Head restraints .............................166
3-4. Adjusting the steering wheel and mirrors
Steering wheel ............................. 169
Inside rear view mirror ............... 171
Outside rear view mirrors........173
3-5. Opening, closing the windows and moon roof
Power windows ............................ 177
Moon roof ........................................181
Page 122 of 676
122
IS200t_EE(OM53D77E)3-1. Key information
The following keys are provided with the vehicle.
Electronic keys
• Operating the smart entry & startsystem ( P. 141)
• Operating the wireless remote con- trol function
Mechanical keys
Key number plate
Card key (electronic key)
(if equipped)
Operating the smart entry & start sys-
tem ( P. 141)
Locks the doors ( P. 128)
Closes the windows and moon roof
*
( P. 128)
Unlocks the doors ( P. 128)
Opens the windows and moon roof
*
( P. 128)
Opens the trunk ( P. 136)
*: These settings must be customized at an y authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.
Keys
The keys
1
2
3
4
Wireless remote control
1
2
3
4
5
Page 123 of 676
1233-1. Key information
3
Operation of each component
IS200t_EE(OM53D77E)
To take out the mechanical key, push
the release button and take the key out.
The mechanical key can only be
inserted in one direction, as the key only
has grooves on one side. If the key can-
not be inserted in a lock cylinder, turn it
over and re-attempt to insert it.
After using the mechanical key, store it
in the electronic key. Carry the mechan-
ical key together with the electronic key.
If the electronic key battery is depleted
or the entry function does not operate
properly, you will ne ed the mechanical
key. ( P. 615)
Using the mechanical key
Page 124 of 676

1243-1. Key information
IS200t_EE(OM53D77E)
■Card key (if equipped)
●The card key is not waterproof.
●The mechanical key that is stored inside the card key should be used only if a problem
arises, such as when the card key does not operate properly.
●If it is difficult to take out the mechanical key, push down the lock release button using a
pen tip etc. If it is still difficu lt to pull it out, use a coin etc.
■When required to leave the vehicl e’s key with a parking attendant
Set the luggage security system ( P. 137) on and lock the glove box ( P. 469) as cir-
cumstances demand.
Remove the mechanical key for your own use and provide the attendant with the elec-
tronic key only.
■If you lose your mechanical keys
New genuine mechanical keys can be made by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer using the other mechanical key and the key
number stamped on your key number plate. K eep the plate in a safe place such as your
wallet, not in the vehicle.
●To store the mechanical key in the card key,
insert it while pressing the lock release button.
●If the battery cover is not installed and the bat-
tery falls out or if the battery was removed
because the key got wet, reinstall the battery
with the positive terminal facing the Lexus
emblem.