hello!

You may check wiring harnes inside the hinge. Due to poor design (I had same problem with 2001 XC) over time, especially if the harnes moves slightly, bending action will result in wires in the harnes breaking and resulting in no connection. You can inspect those wires by puling slightly out harnes and removing plastic protective sleeve. If that is the case, you have to option to fix it; first, buy new harnes and install it, second, cut the wires and install connectors on those wires and reconnect them (need to go and get some electrical connecctors). Make sure in either case that you palce and secure well harnes inside the hinge to prevent re-occurence. good luck.