Recently bought a used 2007 Edge and having the same problems with getting it to activate. I've called sirius but there's nothing they can do, I've also called the ford dealership and they gave me the number to the company that repairs the radio unit. They gave me the same answer, "the unit needs to be replaced". I find it hard to believe that the unit is defective, this is more a software issue that can be fixed with the right knowledge. Until I figure out if its possible to fix I'll just do what avediswolf did and just resend the activitation signal. In case it helps anyone with 6 cd changer sterio, when on the SAT channel press AUX 2 to enter the diag menu. Just press the key combo to alternate between the different options.