My radio and clock stay on when I remove the key from the ignition and my windows can still operate
After you open the door does it go off?
If you have an aftermarket sound system with a large amplifier this can happen. In that case take it to a car audio shop and have them install a Capacitor.
if not aftermarket equipment it may have something to do with the ignition 94 did the same thing an it was just a simple replacement of the ignition unit. Granted a new set of keys an code for the door is a pain but well worth the money to combat this routine issue with all big mercs
Looking for a Used Grand Marquis in your area?
CarGurus has 1,705 nationwide Grand Marquis listings starting at $1,000.
Search Mercury Grand Marquis Questions
Mercury Grand Marquis Experts
Related Models For Sale
Used Cars For Sale