My husband wants to get a Jeep Cherokee around 2000 model year. We looked at one yesterday and I am totally confused about the seatbelts. It had the lightweight locking latch plates which I have seen in other Jeeps. No problem. However, the seatbelt did NOT ratchet back when pulled out all the way to activate the automatic locking retractor. It also did not lock when I jerked on it quickly, no matter which angle or strength I did it. What the heck? How do I get the shoulder belt to lock?