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I've got hissing sound coming from driver seat. After disassembling the backrest i saw that the left side (outside) on my lateral support has burst bladder and dynamic function on my seat is limited. Switched it off, because the pump wouldn't stop working and this could cause a fail on pump too. = I located the hole, it's approx. 3 cm which is a lot by my opinion (see pics). Can it be replaced only the popped bladder or i need to replace the whole system at the seat (incl. backrest and right bladder too) ? I will try to fix the bladder by using some vinyl glue and proper patch for it (may be from boats) + duck tape for extra secure, because the crack is on the edge and i think it will pop up on other place next time. If MB sold bladders separate i will consider buying one. If so, can somebody tell me the exact part number, my VIN is : WDD2130051A517284 .
Otherwise i'm open to any ideas of fixing it as it should be done, so if someone has experience with this kind of issues, please share it.
Last edited by Klimfilt; Sep 20, 2022 at 09:57 AM.
Unfortunately, MB does not offer bladder separately here is part # for complete valve block assembly to shop may find a cost effective sacrificial part to harvest bladder(s).
Last edited by konigstiger; Sep 20, 2022 at 03:08 PM.
Hi again. Today I’ve tried to fix it but when I test it, the bladder popped up on other place… I’ve got crazy and very mad … so I have to remove the bladder to repair it more properly. But I can’t figure it out, how to remove the bladder from the seat without to remove the seat. I saw that the bladder and plastic are holding up by some metal pillar like a door hinge. But I can’t remove it. Can someone help me how to extract the bladder and to repair it on my desk not when is attached on the car.
Hi again. Today I’ve tried to fix it but when I test it, the bladder popped up on other place… I’ve got crazy and very mad … so I have to remove the bladder to repair it more properly. But I can’t figure it out, how to remove the bladder from the seat without to remove the seat. I saw that the bladder and plastic are holding up by some metal pillar like a door hinge. But I can’t remove it. Can someone help me how to extract the bladder and to repair it on my desk not when is attached on the car.
have you had any success? i suspect that i have a leaking bladder on my driver's seat left side
On a different model (R230 SL) I had great luck replacing the seat bladders with 500ml IV bags. The tubing connection was the exact same size and the IV bags are thicker plastic. Not saying it'll work on a W213, but worth thinking about.
have you had any success? i suspect that i have a leaking bladder on my driver's seat left side
you either have to find a single bladder that still is good sold on eBay or you have to buy the whole kit of bladders from MB as far as has been stated.
I’ve tried many techniques for repairing a bladder and nothing holds if they are something you plan to use. I’ve tried everything from vinyl repair kits to vinyl or rubber cements to impulse sealers to an iron. If there’s one hole in any seam, as soon as that hole is closed, another part opens up and will continue and continue.
On a different model (R230 SL) I had great luck replacing the seat bladders with 500ml IV bags. The tubing connection was the exact same size and the IV bags are thicker plastic. Not saying it'll work on a W213, but worth thinking about.
do you open up the bottom of the OEM bladder enough to stick the IV bag in there? or how do you get it to keep the rough form?
not available. would anybody know on the part numbers, is that for the coupe/convertible or would it work for sedan as well? since the part # starts with 238
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