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Car Forum / Mercedes-Benz Cars / September 2004central locking '95 S420
central locking doesn't work anymore. alarm activates and the doors will self close, but i can't lock all the doors at once, and the trunk opener doesn't work (the trunk's tongue is sticking out all the time now). is this a vacuum pump problem? where is the pump located on this car? i understand they're very $$ from mercedes. any suggestions appreciated. Central locking pump is under the rear seat, right side. There is a modification you may need to do when you replace the pump..... > central locking doesn't work anymore. alarm activates and the doors will > self close, but i can't lock all the doors at once, and the trunk opener > doesn't work (the trunk's tongue is sticking out all the time now). is this > a vacuum pump problem? where is the pump located on this car? i understand > they're very $$ from mercedes. > any suggestions appreciated. > central locking doesn't work anymore. alarm activates and the doors will > self close, but i can't lock all the doors at once, and the trunk opener > doesn't work (the trunk's tongue is sticking out all the time now). is this > a vacuum pump problem? where is the pump located on this car? i understand > they're very $$ from mercedes. > any suggestions appreciated. Yep, sounds like a vacuum pump alright. I don't know where it's located, but they are fairly expensive. Probably around $1000 or so with labor. First, listen to the pump when you activate the door locks. Does it sound like it's running. If it's running for an extended period, you may just have a leak in one of the plastic vacuum lines. Check for leaks before replacing the pump. > central locking doesn't work anymore. alarm activates and the doors will > self close, but i can't lock all the doors at once, and the trunk opener > doesn't work (the trunk's tongue is sticking out all the time now). is this > a vacuum pump problem? where is the pump located on this car? i understand > they're very $$ from mercedes. > any suggestions appreciated. thanks, all, for the tips. good ones. is there more than one component in the locking system? that is, could it be a problem in something other than the vacuum system? i looked on the ADSIT site and they have pumps and some other thing listed in the central locking section of their site. don't want to replace the wrong thing. > First, listen to the pump when you activate the door locks. Does it sound > like it's running. If it's running for an extended period, you may just [quoted text clipped - 8 lines] > > they're very $$ from mercedes. > > any suggestions appreciated. |
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