Something appears to have become detached from the sunroof. When I press the button to operate it I can hear the motor working but nothing happens. I can hear a thumping noise when I go around corners as if part of the sunroof mechanism was being thrown around between the metal roof and the headlining. This has become very annoying. My garage has advised me that it’s a specialized job to remove the headlining and it would cost about £1000. In view of the current value of the car, this is just not worth getting done. Has anybody had a similar problem and is there any way to stop the annoying noise when cornering?