# Close all the vehicle doors. # Insert the ignition key into the ignition lock cylinder - do not turn ignition switch. # Press and hold the DOOR unlock switch (This is the switch on the door, NOT the remote). # While holding the DOOR lock switch in the unlock position, cycle the ignition ON, OFF, ON, OFF ON, OFF. (3 TIMES) # Release the DOOR unlock switch. The doors will lock and unlock one time to confirm the program mode is actuated. # Simultaneously press and hold the LOCK button and the UNLOCK button on one keyless remote for approximately 15 seconds, the doors will lock and unlock to confirm the programming of that transmitter. # Repeat the previous step to program up to four transmitters. Reprogram any existing remotes at this time as they have been erased. # Turn the ignition switch to the ON (one more click forward) position in order to exit the keyless entry transmitter mode. # Operate the transmitter functions in order to verify correct system operation.
You cannot reprogram it. A dealer can get you the Master Code if you've lost it.
thats my question to you
1. Call a Locksmith or 2. Break the window.
The Marquis does not have a standard code. A dealer may be able to supply the factory code for the exact car, unless the code was owner changed.
You just might possibly find a sticker in the trunk somewhere.
You will find a sticker in the trunck with the factory code printed on it.
Just a long shot, but check inside the trunk for a sticker.
To find the keyless entry code for a 2003 Mercury Grand Marquis, you can check the owner's manual, as the code is often listed there. Alternatively, look for a sticker on the driver's side door jamb or the trunk area, where the factory code may be printed. If you can't locate it, a dealership or a locksmith can retrieve the code using specialized equipment.
The keyless entry code for a 2005 Mercury Grand Marquis is typically located on a label attached to the back of the driver's side door panel or inside the trunk, often on the spare tire cover or near the jack. You may also find it in the owner's manual. If the code is not visible, a dealership can retrieve it using the vehicle’s VIN.
Mine was under the trunk lid. When you open the trunk you can see it up underneath towards the back. A white sticker with 5 black numbers on it. '94 Grand Marquis
To reset the keyless entry system on a 1997 Mercury Grand Marquis, start by disconnecting the vehicle's battery for about 10 minutes. Then, reconnect the battery and enter the vehicle. Press the "1" and "2" keys on the keypad simultaneously, which should reset the system. After this, you can program new codes if desired.
The default location is on the Trunk Riser inside of the trunk on the left or right side. Look for a sticker.