The battery light on my 550 turned on the other day. The A/C compressor locked up and broke the belt that drives the altenator and the compressor. Luckily that belt doesn't drive the water pump so I was able get home and later to a dealer. That was the good news. The bad news is, aside the cost of a compressor, is that they can't find one. They are on the way from Italy in I'm sure a very slow ship. They checking with all the other dealers and if they can't get one I'll have to wait for the ship. The worst thing is that we finaly got some nice weather and my car is in the shop.