Mine is exactly the same and having upgraded the sound system I have to say this issue has turned me off this model. Even the FM doesn’t pick up national stations let alone the DAB at times. MB have had the car in twice and have no idea needless to say. They even asked me if I wanted to give the car back! I didn’t get into that conversation as what I want is the radio working as well as my wife’s 6 year old VW golf. Anyway, it’s back in for its knuckle change shortly, so they’re going to have another look at it. It feels as though it just needs another aerial fitted to pick up the signal. Not much on the forums, so guess this isn’t a problem on others GLC’s. Or is it and just being lived with?
GLC 250 AMG Line Petrol, everything but the air suspension, tow bar and night pack. Due end of June.