sitting in pass seat belt presents, buckle and it retracts normal oper. However when seat is empty arm will act erractic. Arm comes out sometime part way and then retracts no set pattern. May happen every few minutes then stop. Never remains out. Buckle belt and action stops. Also when arm is acting up it will not respond when center button is pressed. Don't knew if it related but this seat belt was replaced a few months ago and I have yet to have "SRS" Lite reset. My snap-on scanner will not reset it , I need to have dealership do it. Now I hate to pay the service fee for the reset if I still have a problem. Also temps here in NJ have been record breaking near 100 for past 4 days.