A friend of mine is out of town so I am trying to help his wife with their 97 E320 sedan. We recently had a heavy rain and she called me last night and said that she thinks she hears water sloshing around in the door. I am going to run by their house after work today and try to figure out what is going on. Does this sound familiar to anyone? Is there maybe a drain in the bottom of the door that is clogged? Any ideas as to what could cause this would be appreciated.