Yet another issue I've found with my 4200NEX. I had my Sirius XM Tuner with the previous AVH-X5800BHS and it worked great. No issues. Upgrade to the 4200NEX and now my Tuner needs to be refreshed over and over as in the account itself. It got to the point that when I did choose to listen to Sirius it would need to be refreshed and I was driving so I couldn't do anything. I have since cancelled my subscription waiting for the issue to pop up to others and be fixed.

I just installed mine 2 weeks back, no issues yet. It seems to be working great so far.  I'm using the SiriusXM SXV300v1 module.

Has nothing to do with the 4200. If you have to keep refreshing the signal, its a problem on the siriusxm side of things