W124 Electric seat problem(300ce)

[Kender]

There are a lot of things that may contribute to the MC not working, the pump, the lines from the pump to the bellows in the seat and the switch blocks, often the bellows has a leak, the pump doesn't operate, the switch block is faulty, the lines themselves are connected incorrectly [if somebody else has been messing in there] or just leak...
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Ok. Is there any power wire or only vacuumlines? There wasnt any line connection to the car. I didnt need to brake any lines when i take it off to car.

 

[WDB124066]

Without being there I can't really help much further, but one way of sorting the MC is to go find another one that hasn't been messed with and compare what you have to that.

Unfortunately you seem to have inherited a bit of a mess that is hard to correct without being there to see what exists and what doesn't. Does your datacard say you have MC seats in your chassis?

Is there a pump under the rear seat...?

 

[Kender]

MC is in chassis. I assume that is a pump. The black line is going to the switch block.

 

[WDB124066]

Yes, pump, vacuum lines and electrics, fuses etc for the pump. How that is connected to the seat switch and bellows is not perfectly clear to me, there may be others that have this system on their car that they have looked at at some point in time that may be able to guide you more precisely.

In the meantime does the pump run?
Can you see if the bellows in the seat will hold pressure at the various settings?

 

[Kender]

Have to clue the cable. Locking mecanism wont work. I used to do it passenger side earlyer and now it works...