ABS WARNING LIGHT AND BRAKE WARNING LIGHT ILLUMINATE.THE BRAKE WARNING LIGHT ILLUMINATES MOST ALL OF THE TIME BUT WILL GO OUT ON OCCASION THEN ILLUMINATE AGAIN AND AGAIN OR STAY ON .THE BRAKES SEEM TO OPERATE NORMALLY AND PASS ALL MECHANICAL INSPECTIONS.THE BRAKE WARNING LIGHT WILL GO OUT UPON SHARP ELEVATION CHANGES COMBINED WITH SHARP TURNING MANUVERS.