2011 Is the last model year of the Mercury Grand Marquis
More than likely a blown fuse.
1st step check fuses
i have one coming in tommorrow, I'll let you know what i find
i dont know if you have changed this alternator or not but if you have and the new one quit call me i know the problem mine went out 5 times before i figured it out. 252-814-9267
This has puzzeled mechanics for years. First change the fuel filter then take it to a mechanic if that doesn't fix it.
The battery light indicates the system is not charging. Have the charging system checked. If the alternator is not charging, the engine will quit running and leave you stranded.
she quit in 1999
loose belt.
Winners Never Quit was created in 1999.
this sounds like a fuse or 2. that's where i would start.
the alternator is out