I've had this problem for a while, and until now, I've been dealing with it by parking my car in the garage when it rains, and simply not driving it. However, now that winter has finally begun in Northern California, I need to get this fixed. It appears that my windshild seal is leaking, as I have found water on the driver side floorboard and a soggy carpet. In the attached picture, you can see that the windshield seal has prtially pulled away from the body of the car. I know that it is not the sunroof drains, as I have opened the sunroof and poured a small amount of water into each drain. Water trickeled readily onto my driveway. Additionally, the inside of my dash is wet where it meets the windshield seal.

Intuitively, it seems that it should be the windshield seal, but I know that these cars can be tricky, and I don't want to spend $400 to fix something only to find out that it was not the source of the leak.

Does anyone have any thoughts on this matter??

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1982 240D - 292,000 miles and counting
Same family for 33 years
Newly rebuilt Monark injectors
Newly replaced clutch
New Bilstein shocks