S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Self closing assist came back to life...

Old Nov 22, 2012 | 02:30 AM
  #1  
DNA47's Avatar
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From: Montréal
Facelift GLC43
Question Self closing assist came back to life...

So a couple of months or so i lost the closing assist feature on my passenger door but last Friday i noticed it's working again. I thought i had a leak of some sort and that the pump disabled that door as a security feature so it doesn't "burn" itself...so why the hell is it running again and yeah i hear a hissing sound after it closes itself.

My girlfriend discovered that she can use it again and can't help herself not closing the door completely

Should i take it in and get it fixed or is there anyway to disable it back?

Last edited by DNA47; Nov 22, 2012 at 02:32 AM.
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Old Nov 22, 2012 | 07:02 AM
  #2  
KarlBenz's Avatar
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From: Atlanta Georgia
Mitsubishi Outlander 2012 AWD
There is definitely a leak have it checked could just be a broken vacuum line
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Old Nov 23, 2012 | 11:44 AM
  #3  
trombone's Avatar
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From: Indiana
2002 S430
Or a pressure line.

My soft close came back to full function when I turned the lumbar support switch to 0. I do not really need the lumbar support so it is a pending project to find out if the pouch is leaking or the switch.

The PSF pump both a vacuum and a pressure pump and a leak anywhere may effect all others.

When I was testing for leak I temporarily disabled functions by plugging the some outlets right on the pump. I like my soft close and I would not disable it. I keep telling my friens and family riding with me jus to pull or push the door gently.
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Old Nov 23, 2012 | 11:47 AM
  #4  
DNA47's Avatar
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Facelift GLC43
Thanks Guys! and trombone, i meant only disabling the passenger door, not the full closing assist feature on the whole car
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