There's a long background story behind here, but the issue at hand is that a friend's street driven, pristine, poser FJ was dragged sideways from it's rear tow hook yesterday. Everyone in the office just assumed the street queen was up to his usual parking jackassery... Now, his traction control light is on while driving. Any theories why this would happen? I searched for info on VSC, TRAC, and ATRAC, but I can't find anything that indicates that the system would care. Don't all three use ABS sensors? Is there a sensor in the diff? It seems like trail use would be much more abusive than a little parking lot drag. I can't believe it's related. Maybe he just didn't screw his gas cap back on properly. Any theories from the better educated?