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  #1  
Old 04-15-2003, 05:39 PM
Scott500SEC
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w140 vaccum pump

I would like to get some information about the pump under the rear seat of my 1992 300se. The door locks don't go down, the back up indicators don't go up and the lumbar support dosen't work. I assume this is all related to the vaccum pump. Is there a source for a remanufactured or used one?

***the door lock LED's light up correctly***

Is there a way to fix this pump?

Thanks, Scott

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  #2  
Old 04-21-2003, 02:16 PM
1994C220's Avatar
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Join Date: Aug 2001
Location: Iowa City, Iowa
Posts: 124
Try eBay

Scott...I saw a vaccum pump going for 325.00 on eBay for a w140. Thats not exactly cheap, but its a heck of alot cheaper than getting it from the dealer.

I go into eBay on a daily basis and do a search using "w140" in the search field. Brings up most of the items that will fit my S320. You can also try "mercedes pump" or something similar.

good luck.
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  #3  
Old 04-21-2003, 05:03 PM
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Join Date: Jan 2003
Location: Florida
Posts: 1,084
140 vacum pump

the pump under the seat controls your lumbar, the backup assist
rods, it provides vacum for the climate control, and the locking function, On a SEC I think it also controls the seat back latching. I have not heard of too many sources for a rebuilt, and getting one from a recycler could get you another with a short life. The last numbers I heard were around $300, you dont need the adapter plate that some try and sell unless the now offer a universal pump, there is a difference between them depending if you have vacum or power headrests.
Operate the locks, if you hear the motor run, you could be lucky and just have a vacum leak, and it could be the hose in the pump. The pump provides pressure or vacum depending on the closing or opening, and times out if it can not perform the function. I would shop dealers for the best price, there are some who discount to the public, check the "Star Mag"
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Old 04-21-2003, 06:33 PM
Scott500SEC
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thanks for your help guys

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