How do I change the keyless entry code on my car door of a Mercury Grand Marquis?

I don't have the manual and this little neighbor boy figured out the code and now the whole block knows it!

How do I change the keyless entry code on my car door of a Mercury Grand Marquis?
In a 99, just turn the ignition on to off 4xs, after the 4th time leave it on . Your door locks should lock and unlock. Once this happens just press the desired remote key and it should respond.


These instructions will work on Ford Crown Victoria / Mercury Grand Marquis models 93 94:


Turn ignition to RUN or ACC. Momentarily jump pins in programming connector located behind the glove box. All doors will lock then unlock to confirm programming mode. Press any button on 1st transmitter. Door locks will cycle to confirm programming. Press any button on 2nd transmitter (up to 4 transmitters total possible). Turn ignition to OFF. Locks will again cycle to indicate end of programming mode.


These instructions will work on Ford Crown Victoria / Mercury Grand Marquis models 95 96 97:


Enter 5 digit permanent entry code into the keyless entry keypad. Within 5 seconds of pressing last button of code, press the 1/2 button. All doors will lock then unlock to confirm programming mode. Press any button on 1st transmitter within 5 seconds of pressing the 1/2 button. Locks will cycle to indicate successful programming. Press any button on 2nd transmitter (up to 4 transmitters total possible) within 5 seconds of previous transmitter. (if the keypad light goes out before all transmitters are programmed, the entire process must be repeated). Press the 7/8 and 9/0 buttons simultaneously on keypad to exit programming mode.


You didn't say what year hope this helps.Good Luck
Reply:Accordingly to owners manual, there is the possibility to have 2 codes in the system at any given moment. one is factory, which can not be changed and the other is user.


If the boy find out the factory, no way to change it.


If he find out user, just change it.
Reply:Go to your local Ford dealer, they should have the repair manual for your car stored on disc. They should be able to help you, and even print it up for you.








Former Ford Technician.
Reply:Generally speaking the keyless entry code has to be reset at the dealer. It is a relatively cheap fix and there may even be a shop in town that can do it, and keep that little boy away from your car
Reply:you should have gotten a small card with the factory default code on it, this would be in your owners packet. If you don't have that anymore you may be able to contact ford with your vehicle identification number located on the dash board visible from outside of the windshield on the drivers side of the car.