benz_addict

Hey guys I'm shopping for a new PSE pneumatic pump mine is dying on me now. The doors stopped closing so I had the dealer examine the problem and they told me the PSE pump needs to be replaced. $1200 parts and labor.

Does anyone know where I can find one for cheap?

Frank_S500

Hi There.

If you dont mind that it comes from Germany i have a spare one to sell.
Asking $400 plus shipping

Cheers, Frank

raymond g-

i like to keep Potomac German Auto in mind when I shop around, if not,just to
get an idea on used prices

my06clk

I told you to stop resetting....

You actually can get the part at the dealer its only 450 bucks or less.. the rest of that quote was labor.

Laubscherc

If you reset the pump and it works for a while, you can save it by investing about 1/2 an hour of time. The error is related to the closing pressure that needs to be attained when the pump then switches off. If it takes to long to switch off it times out, and the pump then switches off the "leaking" circuit.

Check out the link, it is for a W140, but the basic actions are the same.

http://v12uberalles.com/Closing_Assist_Pump.htm

my06clk

I said the same thing here. In post #5 and post #11 but no one listens..

https://mbworld.org/forums/s-class-w220/250915-trunk-soft-close.html

Laubscherc

haha, if you don't listen then pay :-)

Seriously, I have done this on both W140 and W220 series. The W140 has been running now for 6 months without failure and the W220 for about a week.

my06clk

Looks like the screw thing you suggested my may work for him.. I'll keep posted for the result.

S500 Man

jesus my stupid doors the soft close works then stops working after i shut the doors a couple times i have to keep resetting any idea?

benz_addict

I just fixed mine check out post 5. You have to dismantle your PSE pump.

S500 Man

did adjusting the pressure cut off do it for you?

benz_addict

Yup the doors work now without a problem at only one cost; lumbar support doesn't work anymore.

trustz

Let me know if you want a used one for $200 plus shipping:

https://mbworld.org/forums/s-class-w220/257724-pse-pump-w220-door-soft-close-trunk-close-open-seat-lumbar-support.html

S500 Man

is the pse pump still located in trunk on w220?

trustz

Yes, on the driver side above the CD changer and NAV.

S500 Man

i took the pse pump apart......now i have the casing off.....and im lost.

S500 Man

how do you take it apart from the base, its like stuck down, i dont see anymore screws but 3?

S500 Man

ok i took the pump apart and i cant find the adjustment screw, i dont see it anywhere............????????????? is it the white plastic screw? thats all i see thats adjustable?????????

S500 Man

any pics of what the w220 adjustment looks like?is it the white plastic screw?

S500 Man

i did something now the pump runs continuosly and doesnt soft close???do all the wires have to go in a specific spot or doesnt matter?think i set the timer longer instead of shorter?

S500 Man

i didnt label the lines does it matter where they plug into or are they all the same??????????

benz_addict

What did you do??? You were suppose to take out the two big plastic connections, not take out each tunbe line seperately. Yes it does matter which line goes where.. The adjustment screw is that white one check out post 19 and 20

https://mbworld.org/forums/showthrea...823&highlight=

S500 Man

i unplugged every air line off the pump so i could remove the pse pump and bring it upstairs to my house and work on it.

S500 Man

now i dont know which wire goes to which slot on the pump?????????????

S500 Man

OMG i created a disaster??????