1996 Mercury Sable Owner's Manual - Page 165

Arming the system The system is ready to arm any time the ignition switch is turned OFF and the alarm is not triggered or sounding. Any of the following events will prearm the anti-theft system: u Pressing the remote entry transmitter LOCK u Pressing the 7/8 and 9/10 buttons on the button to lock the doors (with the doors open or closed). Keyless Entry Keypad at the same time to lock the doors (with the doors open or closed). lock button to lock the doors. u Opening a door and pressing the power door u Turning the driver's or front passenger's door key to the LOCK position to centrally lock all doors (with the doors open or closed). If a door or the liftgate is open, the anti-theft system is prearmed and waiting for all doors to close. The THEFT indicator in the instrument panel will light continuously while the system is prearmed. Once all doors and the liftgate are closed, if any were open, the system will begin a 30 second countdown to become armed. The 30 second countdown allows people who may still be in the vehicle time to exit without triggering the alarm. The THEFT indicator will glow steadily until the system is armed. When the system is armed, the THEFT indicator will begin to flash with short flashes every 2 seconds until the system is triggered or disarmed. Remember, all doors and the liftgate must be fully closed for the anti-theft system to arm. If a door or the liftgate has been left open or ajar, and you press the remote entry transmitter twice 138