Anyone else had a problem with a louder than normal clicking noise everytime the wipers are activated? I had rain sensors in a previous beemer that made a quiet click so am sure I know what it should sound like, but this noise at the moment sounds too loud to be normal. Also it appears to be louder than when I first got the car, but then it might be that we haven't had much rain since I bought it. Whatever, I am now a little confused :?