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Old 05-25-2018, 07:16 AM
charrua charrua is offline
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Join Date: May 2018
Posts: 13
Originally Posted by shertex View Post
I know my 1991 W124 has a pump in that location. But I also seem to recall that, prior to a certain year, there was no pump....the door locking just operated on the residual vacuum of the system.

Can you provide the VIN? Perhaps we can look in EPC.
That is one of my ideas, that the system runs without a separate pump...
The VIN is WDB2011261A487758
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