[brandon671]

I've been wondering why my switch has not been working. at first i wasnt too sure if it was a fuse or not. I've been looking at fuse diagrams but could not find one particular fuse for it. while looking at the wiring i found this. where was this supposed to go?

 

[brandon671]

...

 

[loubapache]

These are the pressure lines from the PSE pump to the air bladders in your seat. The PSE pump pumps air into the bladders so you get the multi-contour.

 

[brandon671]

what do you mean by "PSE". Does anyone have a pdf diagram of these lines?

 

[loubapache]

PSE is Pneumatic System Equipment pump that is located next to the battery.

How did you dis-connect all these airlines?

The line comes from the pump, split into left and right, then each is split again to a reservoir and to the control valve (switches). From the valve, the lines go to the 5 bladders (the two bolster bladders share a single line as seen in your second picture).

 

[Kajtek1]

Not knowing much about those seats -I can help to notice that the yellow lines looks burned.
Something to do with seat heaters?

 

[raymond-]

what do you mean by "PSE". Does anyone have a pdf diagram of these lines?

i'll need to check my notes to see if the PSE pump (seen in lower right) has
stamped markings or other indicators showing line assignments

I've been wondering why my switch has not been working. at first i wasnt too sure if it was a fuse or not. I've been looking at fuse diagrams but could not find one particular fuse for it. while looking at the wiring i found this. where was this supposed to go?

p.s. may i ask how you determined that the switch is not working?

 

[brandon671]

i'll need to check my notes to see if the PSE pump (seen in lower right) has
stamped markings or other indicators showing line assignments

p.s. may i ask how you determined that the switch is not working?

I figured it was not working, because i didn't even hear air pressure while the windows were up. As for the comment about the seat heaters, its most likely not. The car did not come with this option as i live in the hottest rock on the planet, Guam. The hoses were so brittle that even a small squeeze would crack. There's no problem with it not operational, i doubt id even use it that often. I just believe everything in a Mercedes should work and should be stock.