That happened to me..Took it to the dealers,he said VW know about the problem and are prepared to meet 50% of the costs..So it cost me ?75..
He said its a global problem,(confirmed to me by an american golf owner)and they are just waiting for the cars to come in!!!!!. I asked if the problem still exists,<points to a new golf> and he said if I bought that one it will still happen?.. I rang VWUK HQ and they also confirmed what my dealer said.. Good luck