BMW Electrical sucks. The fuse they had (15A) kept on blowing with the correct bulbs inside, then the dealer insisted on changing the switch, I said no, stick in a 20A fuse and it will go away. They still insisted, but I told them close out the work order, I'll take the car and fix it myself, which I did. Replaced fuse, no problems since. Dealers are just plain greedy. But was nice to get a 'free' diagnossis from them for once.