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.

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?

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.

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?

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

You could also buy some additional hose to extend it

Try a hose clamp

Finally reattached mine after procrastinating for about 11 months. Lol.

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.

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.

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

I took mine apart and they were all intact.
So it looks like my bladders really could be leaking.

Never heard of a leaking bladder

I just hope I'm wrong....

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.

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.

Amen

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

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.

I just fixed my bladder (plastic bag) and initial test works and keep the air. Some tire tube, sandpaper and urethane glue was key!