Stian, I had a similar problem with my passenger window. When someone closed the door from the outside, he pressed his hand on the window while it wasn't all the way up. This pushed it off of the front (left) track. All I had to do to fix it was pry the thing back on it's track. It was a little tricky to do because there is so little room. Before you try this, I suggest disconnecting the window regulator from the window so you could manipulate the window easier. I understand that the position of the track is adjustable, but that may not be necessary in your case. Later, Walt