I have noticed that after I wash my car that I get some water in the trunk, close to the tail light (drivers side). Don't see the water unless I lift up the rubber trunk mat. I suspect that the rubber seal around the light is not working, probably dry and needs to be replaced....
For now, I simply wipe the trunk dry after each wash...
Just another place to check besides the large trunk seal.
Bob
bpossel
Memphis, TN.
1971 280SL
1997 E320