I bought this 2015 CLA with the sunroof not working took it to the dealership since it's still under warranty seems they won't repair because it was in an accident they won't do anything to it actually. Seems they can blame the accident for anything lol. I just want to fix it myself but I wanted some drawings or instructions on how to dissasemble so I can see what's wrong. One side doesn't come up when trying to open it. Since I can't open how do I dissemble it?