I have had countless visits to the shop with my 2002 C320 wagon in the past year. The airbag warning light took 5 visits to remedy. Next, I had numerous "visit workshop" warnings, plus assorted "lights out" warnings. The dealership told me they found a mouse nest. Supposedly, they replaced the battery and alternator. Since this was done in 0ctober, I have had at least 5 road service calls for a dead battery. They discovered a power drain, and replaced the offending part. Now today we loaded the car with Christmas gifts, only to have to unload it due to another dead battery. I'm ready to trade it in tomorrow, but I'd rather find another solution. Of course, we just passed 50,000 miles, so it is now out of warranty (although all of the work was done within the warranty period). Has anyone had similar problems?