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  #1  
Old 07-19-2011, 09:40 PM
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Join Date: Aug 2010
Location: Screwston, TX
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Orthopedic seat repair?

Anyone know anything about it? This seems to have been a pretty rare option, I haven't seen any info on the orthopedic inflation/control system. Mine sort of worked when I first got the car, but now doesn't work at all. I suspect there's a vacuum line leak somewhere, but I don't want to just go poking around with no idea what I'm doing.

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  #2  
Old 07-19-2011, 10:18 PM
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They are "balloons" that get pumped up by the central locking pump. It's detailed fairly well in the service manual.

-J
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  #3  
Old 07-19-2011, 10:29 PM
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Join Date: Jul 2005
Location: Seattle, WA
Posts: 585
if the entire list of vacuum compliant accessories have failed, then the finger
points to the PSE pump or associated fuse

if only a (or a few) accessories have failed, check the hose/connectors

if only 1-2 bladders in the seat have failed, check bladder and bladder switch unit
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  #4  
Old 07-19-2011, 10:49 PM
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Location: Connecticut
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Its a little different between W126 and other cars, but from a W126 perspective Raymond is spot on.

-I assume your pump is functional if your Central Locking is working.

-Your options are to check the connections of the vacuum lines for any disconnections; might want to replace the rubber fittings at this point anyways.

-If those look good, my bet lies with the ortho seat controls. They're fully mechanical and I have no idea how much a new set would cost from the dealer, but my retrofitted bladders are vac tested as working (still haven't wired the pump in) so I don't know how often those are known to have failed.

Good luck!
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  #5  
Old 07-19-2011, 11:00 PM
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Pump is functional. When I press any of the controls on the control box, it tries to pump the bladders up, but they collapse right away with air hissing out near the control box.
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Current:
1994 E320, Brilliantsilber 191k
1982 300D, Silberblau under a blue repaint 256k

RIP:
1995 E300D Polarweiss, 287k
1995 E320 Polarweiss, 126k
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  #6  
Old 07-19-2011, 11:21 PM
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Check if the big vac connector that all the lines go into is in all the way; if not, sounds like you need a new control unit.

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