Alon, I've searched the posts on broken cables and they point me toward the motor in the trunk. But this car has something wrong with the sunroof panel sinking in one corner, I think that's what's stopping the retracting. Nothing I read discussed what that might be short of taking out the liner and disassembling
I'm a retired DIY, and only pick and choose my chores these days... I was hoping someone had seen this problem and could give me a feel for the job at hand.
Matt, you might get away with some white grease lubrication!