I have that problem with the belts. First it was my passenger side, so I never felt like fixing it, then it fixed its self. Now it is the driver side. Me being lazy, I'm thinking it will fix its self also. The belts in my car on both passenger (when it was having the problem) and driver side will retract fine if you open the door before you turn the car off. So I just open the door right before I turn the car off. It's become so routine I do it without thinking about it anymore.