I have decided that it is unacceptable for my 1979 240D to leak water in the cabin anymore. Ordered the two seals I know are bad (trunk, drivers door) but am certain I have water leaking in other places.

The place the water shows up the most is in the rear behind the drivers seat but is funneling down the little valley where the wires run to the back. I think I may have the same leak Identified on this you tube video made by mercedes source

Chasing Interior Water Leaks in Older Mercedes Benz by Kent Bergsma - YouTube


But before I do anything I would like to verify all my drains are draining and not backing up water in the car.

Could someone please post a picture of all w123 drains so I know where to look when verifying they are all draining.

I know living in Seattle this water leak is not going away and I should have fixed it last summer but better late than never.

Thanks in advance...

There aren't many drains that allow water into the cabin unless you've got rust problems. The sunroof has drains, which come out in the holes under the chrome trim around the back doors, make sure those are clean. The other places that tend to leak water into the cabin are the front and rear windshield seals. Water on the floor in the front is usually a sign of the front windshield seal leaking.

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