Q&A

The seat cover has an opening at the bottom of the seat back. This opening is closed with either a zipper, metal rings or by a plastic channel (similar to a zip lock bag closure). Once you figure out how to get the opening free, then you lift the cover up over the seat back. There will be metal rings (hog rings) that secure the cover to the seat frame. These hog rings need to be cut off as you pull the cover up. This will provide the access you need to figure out what's wrong.
You can do this in the car but it's a bit easier if you remove the seat. You'll need new hog rings and hog ring pliers to perform this job.