this happended to my 318.. pretty much the head peice of the sunroof (the part that has the same color "carpeting" on it isnt fastended all the way to the sunroof anymore... one day i opended my sunroof all the way and when i closed it the head part stay back in the car and the sunroof closed without it, exposing bare metal... Since then in the 318 you have to open the sunroof to pretty much all the way (so the head liner doesnt go all the way back into the car) and when you close it, pull the headliner back over it.. ghetto i know.. but what this did allow me to do was slide the headliner back and then push the sunroof button up as to vent (which it wouldnt cause it was broken) but then i could push it up with my hand if i so desired... a lot of work for it huh?> haha the only time i did was for pics.. anyways not a huge help just exlpaing what happended to me! Summer is coming around and its nice to have!.. maybe harmony can take a look at it for you.
David