I have been noticing a more frequent failure in my XM radio. I sucked up the extra $2000 for the GPS and use the XM radio every day, but lately, the radio cuts in and out or does not come on at all. I have to restart the car and then it will come back. The FM and AM don't fail but the XM is failing more and more frequently. My problem is it will be very hard to recreate since it only does it every once in a while. I tried to find a simular thread but no luck. Has anyone else experienced this?
I had that happen just once, and turning the car off/on cured it. You might want to try: https://care.siriusxm.com/retailrefresh_view.action That may fix it.
I had this issue when the car was a few months old, and a (warranty) replacement of the XM Antenna solved my issue. That said, during that process they broke the SAT Navigation antenna, and caused issues until it too, was replaced under warranty. Since then, no issues at all with reception on either of these, except where you'd expect to see it, in mountains or tunnels, etc.
