Immobilizer; Immobilizer Operation - Cadillac XT4 2023 Owner's Manual

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Disarming the Alarm
System
To disarm the alarm system or
turn off the alarm if it has
been activated:
Press
on the remote key.
Unlock the vehicle using the
Keyless Access system.
Start the vehicle.
To avoid setting off the alarm
by accident:
Lock the vehicle after all
occupants have left the
vehicle and all doors are
closed.
Always unlock a door with
the remote key or use the
Keyless Access system.
Unlocking the driver door with
the key will not disarm the
system or turn off the alarm.
How to Detect a Tamper
Condition
If
is pressed and the horn
chirps and the lights flash
three times, the alarm was
activated while the alarm
system was armed.
If the alarm system has been
activated, a message will
appear on the DIC.

Immobilizer

See Radio Frequency
Statement 0 446.

Immobilizer Operation

This vehicle has a passive
theft-deterrent system.
The system does not have to
be manually armed or
disarmed.
The vehicle is automatically
immobilized when the vehicle
is turned off.
Keys, Doors, and Windows
The immobilization system is
disarmed when the ignition is
on or in accessory mode and a
valid remote key is present in
the vehicle.
The security light, in the
instrument cluster, comes on if
there is a problem with arming
or disarming the
theft-deterrent system.
The system has one or more
remote keys matched to an
immobilizer control unit in your
vehicle. Only a correctly
matched remote key will start
the vehicle. If the remote key
is ever damaged, you may not
be able to start your vehicle.
When trying to start the
vehicle, the security light may
come on briefly when the
ignition is turned on.
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