I have recently fitted a Concert II into my B5 S4 and it is linked to a Dension Gateway 100 in the glovebox and everything works just fine with one exception! Every now and then the unit switches off, briefly displays BOSE and then opporates normally until it happens again!!
There does not seem to be any pattern to this and some times it will be fine for upto an hour then it will behave as above 2 or 3 times inside 10 mins.
This is somewhat annoying and something i would very much like to resolve.
Any ideas??