Kia Sorento Seat Belt Retract

Can't Get Rear Seat Belt To Release So You Can Use It And It Is Totally Retracted. It Is In The Rear Drivers Side And Has An Air Bag On Same...

Please Can U Help My Seatbelt Does Not Retract Correctly, It Is Very Slow, I Have Cleaned It And It Is A Little Better But Still Fails, If I...