Yep, we realize it's four years old and that's the problem. The dealerships haven't figured it out. THe head unit (NAV, SAT, 6-disc and DVD) I have in my truck (the original), isn't an "audiophile" according to the window sticker, but when I pulled the stereo it has all of the connections that an "audiophile" system has; just no audiophile speakers in the door or the subwoofer.

When I took it to the dealer, they said it was just plug n play, i.e. "just hook up the subwoofer and it should be good to go -- the sub must be bad (not the case)." I think it has to be reprogrammed, but getting the service techs to believe a "stupid" customer has been quite a challenge. Afterall, I haven't been to all of those Ford Tech Schools.

 

There is a thread floating around here on swaps from regular stereos to full optioned navs in the first 04+ gen trucks. People were getting navs and sending them to a guy for programming. It has information on a person that does the nav programming for the nav to be fully functional on older trucks and i remember one of them saying he also programmed it to function with the factory sub he already had. Do a search and see if you come up with it.