I also have probs with my rear window demister. Button on dash lights yellow when I press it. All fuses ok but there doesn't seem to be any power to rear window.
Sorry to hijack.
Mine was the same no power. Lights on. Have a really good look around the edges for the 2 spade connectors one on each side. It looked a lot like the cable was a bit short and had popped off with the roof movement.
