D'oh. Looks like my answer is at this link... this is required reading for all W140 owners, or anyone who plans to own a W140. GREAT writeup...
http://www.v12uberalles.com/Closing_Assist_Pump.htm I sent this to my BIL, I'm curious what he finds out on his car. :-) -dm > Hi all, > > My BIL's 1994 S500 had a problem with the door closing system, which > has an electrically-operated vacuum pump in the trunk. (This is a > SEPARATE pump from the door locks, btw.) It basically would stop > working, so he'd pull the fuse (in the trunk) and re-insert it, which > would re-set the system and it would work a few times and then quit. > He got a rebuilt pump from Beckman Technologies... > > http://www.beckmanntechnologies.com/products.html > > ...and that fixed the problem. Now, a few months later, one door is > not closing like it should. Rumor is, that's a sign of the pump going > out (again!). Does anyone know enough about these systems to say if > that's a true statement? Anyone have troubleshooting info on these > things? Sure is a nice car when everything works right...! > > :-) > > > -- > Dave M. > Boise, ID > 1994 E500 - 95kmi (Q-ship) > 1987 300D - 263kmi (Sportline)
