Driver seat "boing" noise
Noticed for a couple of weeks recently a strange noise emanating from the driver's seat just as I'm getting out of the car. It seems to come from near the lumbar region and I can only describe it as a "boing" noise, as if a spring's gone?! I can occasionally replicate it by pushing my lower back against the seat. (I've half-leather sports seats.)
Appreciate any ideas of how to cure it.