Ok, so I jumped on the band wagon and bought a Fusion key for my Mustang. I got it cut by a locksmith, then hopped in the car and programmed the key and the remote within 4 minutes. The car started, Alright!
I get out of the car and hit the lock button, everything works, cool. Now my two original remotes don't work, but the keys
will start the car. What's the deal?? I went back through the programming sequence, but no good. Now, only my new Fusion key will unlock my doors.
Anybody know what I did wrong, or how to fix this?