OK, so I am not a techie like the majority of you on here..and remember it's my wifes car anyway..

However I was allowed to drive it to the beach yesterday and I noticed whilst scrabbling around under the drivers seat for a stray coin that a large spring had 'come adrift'. Next to it was a small piece of cast metal and a piece of broken plastic.
The seat works in all planes and there are no obvious faults?
Any ideas team?
