1996 Mercury Grand Marquis Owner's Manual - Page 129

When you bought your vehicle, you were given a computer code that operates the system for your vehicle. For your convenience, we have duplicated this code in three places. The code is: u on your owner's wallet card found in the glove compartment u taped to the underside of the trunk lid u taped to the computer module behind the driver's door trim panel. When you use this entry system, the illuminated entry system turns on the interior lights for 25 seconds and the buttons on the keypad light up. Do not push the buttons with a key, ballpoint pen, pencil, or any other hard object. These objects could damage the buttons. Unlocking the doors with the keyless entry system You must unlock the driver's door before you unlock any of the other doors or trunk. If you let more than five seconds pass between pressing numbers, the system shuts down, and you have to enter the code again. The system has shut down if the keypad light is out. If the keyless entry system does not work properly, use the key or transmitter(s) to lock and unlock the doors or unlock the trunk. 1. To unlock the driver's door, enter the factory code or your personal code. All codes have five numbers. After you press the fifth number, the driver's door unlocks. To unlock the passenger's doors, press the 3/4 button within five seconds of unlocking the driver's door or trunk, or re-enter the code to open the driver's door, then press 3/4. 2. 126