Door sill problem
It was damn reliable mechanically and electronically. However I had some problems with door seals, door sills, and a few other things here and there. It was a great car though.
Are you trying to tell me that your E has never had such an issue? And to the OP, these kinds of things happen to every car. They have happened to me on my TL, E350, even on my dads W220 S600.


