Fellas, there is a chip in there that can only be repaired by a special machine. There is only one company with the contract to repair these radios and it will cost you about $500 bucks plus or minus a hundred to get a refurbished one with a 1 yr warrenty plus your broken radio. I did this and about 1.2 yrs later same problem.
The nav is a pos so I highly recommend junking it and getting an aftermarket system. I went with a sony from crutchfield and its a bummer to give up the integrated u connect for the aftermarket but well worth the nav upgrade (in motion control as well). The new phone bluetooth does sound better as well. Everything else I was able to keep and use, rear dvd and amp, etc.
I did not hook the sat radio back up as sony wanted me to run their own antenna.
Good luck, I recommend getting one without full touch screen. I do not like changing channels or volume with the touch screen.