Cadillac 2006 DTS Owner's Manual page 98

To arm the system, do the following:
1. Open the door.
2. Lock the door using the power door lock switch
with the door open or the remote keyless entry
transmitter. The security light should come on
and stay on.
3. Close all the doors. The security light should go off
within approximately 30 seconds.
If a door or the trunk is opened without a key or a
remote keyless entry transmitter, the horn will sound
and the lamps will flash for about 30 seconds.
The theft-deterrent system will not arm if you lock the
doors with a key or use the manual door lock. It
activates only if you use a power door lock with the
door open or the remote keyless entry transmitter.
2-20
To avoid activating the alarm by accident do
the following:
•
The vehicle should be locked with the door key or
the manual door lock after the doors are closed if
you do not want to arm the theft-deterrent system.
•
Always unlock a door with a key or use the remote
keyless entry transmitter system. Pressing the
unlock button on the remote keyless entry
transmitter disables the theft-deterrent system.
Unlocking a door any other way will activate
the alarm when a door or the trunk is opened.
If you activate the alarm by accident, unlock the driver's
door with your key. You can also turn off the alarm by
using the unlock button on the remote keyless entry
transmitter system, or by starting the car with a valid key.
Changes or modifications made to this system by other
than an authorized service facility could void
authorization to use the theft system.