Over the past couple of weeks I have noticed a faint rattly sound coming from within the dash when the heating system is switched on, the faster the setting the louder it gets.

This morning I started the car and the heating was not working at all, the outside temperature was -3C. Once the engine warmed up the heaters started working again but if I put the fans on setting 5, 6 or 7 there is a heavy vibration through the car.

All of theses issues have occured once the really cold weather set in.

Any advice would be a big help in case it is a quick fix and doesn't require the entire dashboard to be removed.