Regarding the drains Larry referred to as under the rear quarter panels: If the massage method Larry describes has little or no effect, the drains may be accessed by cleaning out your trunk and removing the trunk liners to get at the drains from above. I clean the drains in my 300E this way, not the other way. I don't know why or how, perhaps its from all the grungy golf shoes and clubs that occupy my trunk from time to time, but dirt, leaves and general crud can accumulate in there and block the drains. After I purchased the 300E, I cleared out 5 sections of N Gauge track, 6 model telephone posts and an N Gauge oak tree in the left well. Baffled me.

Regarding all of the drains. The rubber drains on my old 300D were so brittle that the massage method destroyed them (which is why I clean the ones in the 300E the way I do). Cheap to replace, though.

__________________
David

His:
2003 Dodge Durango SLT
2002 BMW E39 530i Sport
1988 Mercedes 300TE
Hers:
2003 Chevrolet Suburban
1999 E430