Lexus is300 2021, Service Manual

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1-4. Theft deterrent system
■
Items to check before locking the
vehicle
To prevent unexpected triggering of
the alarm and vehicle theft, make sure
of the following:
 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.
■
Setting
Close the doors, trunk and hood, and
lock all the doors. The system will be
set automatically after 30 seconds.
The indicator light changes from being on
to flashing when the system is set.
■
Deactivating or stopping
Do one of the following to deactivate
or stop the alarm:

Unlock the doors.

Open the trunk.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine. (The alarm will be
deactivated or stopped after a few
seconds.)
■ System maintenance
The vehicle has a maintenance-free type
alarm system.
■
Triggering of the alarm
The alarm may be triggered in the following
situations:
(Stopping the alarm deactivates the alarm
system.)
● A person inside the vehicle opens a door
or the trunk or hood, or unlocks the vehi-
cle.
●
The battery is recharged or replaced
when the vehicle is locked. (

P.363)
Alarm
The alarm uses light and sound to
give an alert when an intrusion is
detected.
The alarm is triggered in the follow-
ing situations when the alarm is set:
 A locked door or trunk is
unlocked or opened in any way
other than using the entry func-
tion, wireless remote control or
mechanical key. (The doors will
lock again automatically.)

The hood is opened.
Setting/deactivating/stopping
the alarm system