C36 AMG, C43 AMG (W202) 1995 - 2000

Air lumber support

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Old Apr 19, 2012 | 09:10 PM
  #1  
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1998 Black Opal C43
Air lumber support

Has anyone replaced the lumber support air bags inside the seats? Mine seems to be leaking and the compressor shuts down after a while to save the motor.

Is it difficult? Anyone have any parts number for them? Might as well do both seats while I'm at it.....

Thank you in advance.
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Old Apr 20, 2012 | 08:48 AM
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Are you sure the leak is from the actual air bag? Could just be a air hose leak. Can't see how the air bag would get damaged for it to leak?
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Old Apr 20, 2012 | 11:52 AM
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Which bladder do you think is leaking? I have seen the controls beside the seat leak and the hoses leak, but I haven't seen a bladder leak.
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Old Apr 20, 2012 | 01:48 PM
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Good point. I was just told by my mechanic who fixed my oil leak that my ECU had a bunch of error codes related to that and it's most likely the bladder.
He was the one who recommended I go replace the bladders myself. lol

Can we order just the hose?

Originally Posted by ECTurboGSX
Which bladder do you think is leaking? I have seen the controls beside the seat leak and the hoses leak, but I haven't seen a bladder leak.
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Old Apr 21, 2012 | 04:46 AM
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Originally Posted by speed43
Could just be a air hose leak.
A common problem. Remove the two Phillips head screws at the base of the seat back cover, and you'll see the hose most likely to have pulled out of the fitting. Attached are photos before and after I reconnected mine:
Attached Thumbnails Air lumber support-img_20120212_93.jpg   Air lumber support-img_20120212_95.jpg  
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Old Apr 21, 2012 | 04:35 PM
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Originally Posted by Kropf
A common problem. Remove the two Phillips head screws at the base of the seat back cover, and you'll see the hose most likely to have pulled out of the fitting. Attached are photos before and after I reconnected mine:

Had this same problem, it is common. Make sure you use some super glue when you reattach them. I did this a while ago and they have since popped back off, I should have used super glue
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Old Apr 22, 2012 | 12:44 PM
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You could also buy some additional hose to extend it
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Old Apr 22, 2012 | 01:07 PM
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Try a hose clamp
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Old Apr 22, 2012 | 03:39 PM
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Finally reattached mine after procrastinating for about 11 months. Lol.
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Old Apr 22, 2012 | 04:31 PM
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I'm sure you are bashing your head saying why did I wait so long to do it
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Old Apr 23, 2012 | 12:35 AM
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Originally Posted by DRBC43AMG
I'm sure you are bashing your head saying why did I wait so long to do it
haha, yeah. i knew how to fix it a long time ago (from browsing the forums), but was lazy about actually doing it.
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Old Apr 23, 2012 | 04:28 PM
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Thanks guys for the info! Gonna pull my car in the garage to night and check it out. Hopefully it's simple as a loose hose.
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Old May 8, 2012 | 02:09 PM
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I just fixed my drivers side bolster air bags by re-connecting, so glad I did it, took me a long time to get around to it. took about 3 minutes hahah
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Old May 8, 2012 | 02:10 PM
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I took mine apart and they were all intact.
So it looks like my bladders really could be leaking.
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Old May 8, 2012 | 02:41 PM
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Never heard of a leaking bladder
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Old May 8, 2012 | 02:58 PM
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Originally Posted by DRBC43AMG
Never heard of a leaking bladder
I just hope I'm wrong....
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Old May 8, 2012 | 07:05 PM
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Can you hear any air leaks? There are o-ringed connections in the controller box next to the seat. Can you hear your compressor actually working? It very well could be the bladders, that just seems really unlikely.
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Old May 9, 2012 | 02:40 AM
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i dont see any point trying to convince each other whether it is hose vs fitting vs bladder.
fact is that the damage can happen at any of these points. it just comes down to the odds.
I've seen all three.....but i've always wished it was just the fitting.
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Old May 9, 2012 | 04:18 AM
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Amen
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Old Oct 23, 2012 | 12:50 PM
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W202 AMG C43
I had the same problem with mine, now the driver side works, but one side of the passenger is not working, uppon further check, we found one bladder is broken (the plastic) not sure I can fix this but just replacing it. Does anyone knows from where can I source this and/or the P/N for this?

They were also out place, se we had to re trim them in their place.

Thanks
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Old Oct 25, 2012 | 05:44 PM
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hell yea. ive had my c43 for a few months now, and i had the same problem. passenger seat worked fine but the only thing that didnt work on the driver side was the side bolster. pulled the back cover off and sure enough the line was unhooked..thank god. speaking from experience taking the seat apart to installed new seat bladders are not fun. ive had to do quite a few of them on the newer w212 chasis with the dynamic seats. on the newer ones now, the seat air bladders rip open. must be cheaper material now than in 1999.
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Old Oct 25, 2012 | 06:44 PM
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W202 AMG C43
I just fixed my bladder (plastic bag) and initial test works and keep the air. Some tire tube, sandpaper and urethane glue was key!
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