my 2001 300M is taking on water when it rains. I took it to the dealer and they suggested a new drivers side door gasket. Well, 6 months later, when it starts raining (california) I have about a good 1/4 inch puddle of water on the floorboards.
The odd thing is, it's only wet in the middle and not on the sides where it might come from the doorjam. I thought that maybe there is a defect underneath the car which is allowing water to get in when it's driven, but, I get water appearing on the floorboard, when the car is stationary too, so I am baffled.
So far it's only happening on the drivers side, no where else. any suggestions?