"Right lay on seat in the fully reclined postion and push the levers back with a bit of force . You should hear it click then whilst still lying on it push levers forward quickly this worked for me try a few times if doesn't work as the mechanism is jammed and it needs to be un jammed force helps some times !!! £650 for a new seat my arse!!! Annoying problem granted hope this helps !!
Mike
August 2010"
From this page:
https://www.howtomendit.com/answers.php?id=171210
Lots more solutions on that page (as well as a lot of adverse comments about Peugeot)
3rjbf
May 2022
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.