I took my rear seatbelts out several months ago while working on my car, and I noticed (or at least I think I noticed) that they would not uncoil once they had spooled all the way up. I didn't fiddle with it since I don't ever have more than one passenger. I'm going to have to carry a rear passenger tomorrow, so I will have to reinstall the belts. I would go down and research more, but I have to hit the sack. Does anyone know how to make the seatbelts uncoil so I can reinstall? Thanks

 

You have to get them at the exact angle they sit in the car so that the locking mecanism (gravity/momentum ball) will release.

 

Luis is right. Also, you have to unwind them very slowly.

 

Went through the same issue some time ago. Verly sloooooowly is the answer. This is a common problem on rear belts. Since my 4 year old uses the rear seat extensively, I ended up replacing the belts with new ones from Gert.

 

Ahh, that makes sense. Thanks!

 

For what it worth, mine did not want to unspool neither. It progressed from bad to worse - fiddling and "playing" with the belt to get it unrolled was taking longer and longer.
Until I unbolted the spool, disassembled and reassembled it back. Since then it is working great - unrolls smoothly if you pull it gently, locks if you jerk it. I am not sure what the problem was - it might be that two small sprockets inside the spool were getting too close to each other, their teeth meshed together and they were getting locked.