Had the car for a while now and this is the first time I've really listened to the radio and am very disappointed. I have the professional system with idrive but when listening to FM channels its as if there is a really bad signal and the RDS is jumping channels but cutting out. My suspicion is a bad aerial connection but unsure. Before trotting off to the dealer has anybody else experienced issues with the RDS. Done a search but can't find a lot.