Ou812
Look on the trunk lid support arm.
Check inside the trunk, on the lid arm.
thats my question to you
There should be a sticker on the underside of the trunk lid - that's where it was on my 92 grand marquis
You cannot reprogram it. A dealer can get you the Master Code if you've lost it.
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
Just a long shot, but check inside the trunk for a sticker.
1st step check fuses
The dealer should have that information. Also it may be in the owners manual. If you don't have one, try MOTORLIT.COM
The keyless entry system must be programmed with an OBD II tool which the dealer or locksmith has. Sorry that this is not the answer your looking for, I didn't want to hear it either.
The default location is on the Trunk Riser inside of the trunk on the left or right side. Look for a sticker.