Undo the fabric on the back of the seat near the right hinge. You will see a small diameter steel cable. Pull on that and it should release so the seat will fold up. I had the same issue. New parts were ordered to fix my seat.
If you walk in to my shop and want something installed that you bought elsewhere you can pay me to install it. If it doesn't work because it is defective you can pay me to uninstall it. I will not deal with it, fix it, warranty it, or explain it. Call Amazon with your questions. :)
My wife and I arrived at Koons, test drove the vehicle we had ordered, did the paperwork and drove home. We had our own financing and it was a no-nonsense transaction. Pretty uneventful except for the NEW JEEP PART!!!!!