2008 Mercury Grand Marquis Key FOB Programming Issue
 

I Have Followed All The Programming Instructions, But The FOBS Will Not Program To The Car.

A Merchant Who Sells FOBS, Told Me The Some Grand Marquis Has Issues With New FOBS That Are Trying To Be Programmed To The Security System.

It Is Like Trying To Penetrate A Security Barrier, Without Any Success.

Anybody Heard Of This Particular Issue ?