seat control question

[procharlie]

My TTA lumbar support seems to be "leaking"? I mean that when I adjust it to provide more support, it slowly goes back down and within a munute or two it's in the lower position again. Does anyone know how these work? I seems like it could be a pneumatic control, but I don't know how it would be actuated. Is it a big job to get to it to repair?
Any info would be appreciated.
Thanks,
Charlie

 

[72firebird]

I believe both are supplied off the drivers side, but they're independent. Take the seats out and look under them at the hoses that run to them for the control, you should be able to track it down from there. The system for both seats should be fairly simple, if it pumps up but doesn't hold you have a leak somewhere down the line. I think one of mine is finicky in that you have to constantly click the button to get it to pump up, you can't run it constantly.