1999 Cadillac DeVille Owner's Manual - Page 75

yellowblue Theft-Deterrent System (If Equipped) If the ignition is off and any door is open, the SECURITY light will flash, reminding you to activate the system. Remember, the theft-deterrent system won't activate if you lock the doors with a key or use the manual door lock. It activates only if you use a power door lock button or the remote keyless entry transmitter. To avoid activating the alarm by accident: D Always unlock a door with a key or use the remote The light will also flash if the battery has been disconnected and reconnected. To arm the system, do the following: 1. Open the door. 2. Lock the door using the power door lock 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 about 30 seconds. The horn will sound and the lamps will flash for about 30 seconds when the door or trunk is opened without the key or the remote keyless entry transmitter. The horn also sounds if the locks are damaged. keyless entry transmitter. (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. Cycling the ignition without disarming the theft-deterrent system will also activate the alarm. the doors are closed if you don't want to activate the theft-deterrent system. D The vehicle should be locked with the door key after If you activate the alarm by accident, unlock any door with your key. You can also turn off the alarm by using the unlock button of the remote keyless entry transmitter. The alarm won't stop if you try to unlock a door any other way. 2-15