1997 Mercury Cougar Owner's Manual - Page 100

You can also arm the anti-theft system by following this sequence: 1. 2. 3. Remove key from ignition. Close all of the doors. Press the remote entry transmitter LOCK control. The alarm indicator will come on for 30 seconds to show the alarm is arming and then turn off to show that the alarm has armed. The anti-theft system is designed to work with the factory installed remote entry system. It may not work with other remote entry systems. Disarming an Untriggered Anti-Theft System You can disarm the system by: u unlocking a door with the key (turn the key u using the UNLOCK control on the remote entry transmitter all the way to the end of travel or the system may not disarm. u if remaining in the vehicle, turn the ignition switch to ON or ACC Triggering the Alarm System The armed system will be triggered if: u any door is opened without disarming the system first (see previous paragraphs) u the trunk lock cylinder is removed NOTE: You can open the trunk with your key without setting off the alarm. u the ignition key lock cylinder is forcibly removed from the steering column. 98