Lumbar Support
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Two likely causes.
Electrical; check the fuse - footwell #3
Leaks in the lumbar pipes. Its rare for the baladder to leak but the joints in the pipes occasionally fracture allowing air to leak. You can pull back the seat cover with the seat still in the car to access the pipework
Electrical; check the fuse - footwell #3
Leaks in the lumbar pipes. Its rare for the baladder to leak but the joints in the pipes occasionally fracture allowing air to leak. You can pull back the seat cover with the seat still in the car to access the pipework
Last edited by DeeGee; Jan 18, 2010 at 07:10 AM.
Le Mans Master
Joined: Feb 2009
Posts: 5,253
Likes: 9
From: Northwest CT
I would have to go check, but I don't recall how much sound the pump motor makes. Yes, your pump can be shot. The bladder can be shot too. Not sure about the difficulty factor of accessability. I know for sure there are threads about replacing the bladder with a blood pressure cuff... try a search.
Good luck & let us know how you do!
Good luck & let us know how you do!
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Le Mans Master
Joined: Feb 2009
Posts: 5,253
Likes: 9
From: Northwest CT
That is the thread I was thinking of...
Thank's DeeGee!
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