Hi mate, I just fixed this problem on my valver a couple weeks ago. What you have to do is take all the plastic trim around the electric sunroof button, interior lights, remote sensor etc off until you can see the manual winder. This is just a round piece of metal with a hole for an allan key in it. This is where you can wind it with an allan key if you needed too, but this doesent work. All i found was this metal winder needed pushing up about 3mm, as it had dropped down out of the cog which winds it open & close. I cant see what really stops this dropping out all the time, looks a bit of a crude design!! Hope this helps and is the same thing thats happened to your sunroof. Sam