I had an 06 Jetta 2.5 and the sunroof would open to the up position, but never had problems with getting to close back or open up when I wanted it to. It would do it about once a month. Now....my 07 Passat has started doing the very same, a couple of months ago. Dealership can't diagnose anything since it doesn't do it for them upon inspection. GL hope you get the issue resolved. I have searched the forums trying to see if anyone else had this same issue and no luck.