where is the computer module that the keyless door lock code would be taped to it? Thanks.


Asked by Mar 02, 2008 at 08:06 PM about the 1999 Mercury Grand Marquis

Question type: Maintenance & Repair

Owner's guide says it would be taped to the computer module.  I can't find it anywhere and am just curious what the code is.  Just in case we needed it. The original owner is pretty old now and suffers from some memory loss and couldn't remember.  Thanks.

12 Answers


go to a Merc dealer, prove you own the car, and they will run the VIN and get you the code.

7 people found this helpful.

Yes, these lock modules typically have the keycodes long gone after almost 10 years. :)

4 people found this helpful.

i just found the lock module on an 01 mercury. it was on the drivers door behind the door panel. the sticker was very readable.

7 people found this helpful.

Just pulled my door panel on driver side, black box with codes on it, just under speaker. Easy to read, out of the weather. 2001 mercury GM

6 people found this helpful.

It is inside the driver door skin. A 5 digit # on module

7 people found this helpful.

or look in the trunk on the passanger side hinge its a sticker plain as day

15 people found this helpful.

Pull 4 screws ( 1 visible on left about center, 2 behind rubber inserts on upper door pull, 1 under the switch panel after you unsnap it and lift it out) and then pull the whole panel straight up about 1 inch and then out. The code is on the module in the lower right area, and the sticker is on the lower right area of the module. The code is just above the bar codes.

10 people found this helpful.

It is on the hinge! Thank you Fred! You saved me time, Bill

4 people found this helpful.

2009 security code for door. Bought used

4 people found this helpful.

Wish it had been on the hinge of the 2004. Husband won't look under the door panel. Dealership won't help us get the code, Tom Boland. Guess we just won't have it. Thanks, always good to find a discussion on the net. Bren


Is it possible to add remote control access to a 2006 Grand Marquis that didn't come with it but has power locks and windows?

1 people found this helpful.

The code is behind the door panel on the driver side.

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