I haven't touched mine since I got it. I don't want to find out if it works or not. It looks fine the way it is. Last thing I need is a pin to snap, the headliner to fly off and then it starts raining. It's there, it's a hole in the roof, and when it comes time to sell it, if ever, I will us it as a selling point. "Ahh, you see that monstrous sliding pano roof? It is so cool. Ya open it and enjoy the sun!!!" That was extra money as an option ya know, lol

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2011 E70 50i M Sport