2006 Grand Marquis GS wo remote entry - is it possible to buy the remote key fobs and program them to work?
There is instructions in the owners manual. You need two
original keys and a new key or more that have the smart chip built
into them. Then go thru the sequence described in the owners manual
for programming the new keys to allow the alarm system to recognize
these new keys. Otherwise it's $25 per key and $86 to Ford or
Mercury dealer to do it for you. Key has to be cut as well at
purchase location. Woody The car must have the system installed in
order to work.