From what i've seen, the bladders end up getting punctured. Something in the seats seem to like putting holes in them. You'll probably have to take the seat cover off to see what the problem is. Chances are, it's got a leak.
I seem to have the same issue but NONE of my adjustments move when the motors run. I didn't know they were bladders so I guess I'll either just live with it or pull the seat apart. That should be a trip!:thud:
Actually it's not the bladders themselves, it's the cheap plastic hose connections that break. Do a search and you'll find a myriad of threads detailing how to use cheap wallmart blood pressure cuffs (more robust than OEM) and Home Depot hose connections to repair your seats. It's a relatively easy DIY.