Coupe/Convertible Forums Moderator
I have noticed than when opening or closing the roof, I get a very brief interruption in the COMAND audio at one point in the process. If I recall, it's just as the trunk lid closes. It's not an antenna issue, because I almost exclusively listen to either the Music Register or Bluetooth streaming (via a Coolstream CarPro plugged into the iPod connector). I've never though much about it, but some guys on the W207 forum noticed the same thing and they believe it's an antenna ground loss issue. I suspect it's a CAN bus messaging issue. This never happened on my W209 CLK, and maybe it only happens on facelift R230's with COMAND 2.5? Any idea?