Code B129A fix Ford Escape 2013-2017 faults with BMS and harness after changing battery or corrosion possible BCM problems. Front windshield wipers don’t work or act funny, battery does overnight, parasitic draw. How to change replace battery get to battery remove wiper blades remove cowl. #mechanic #autotech #diag #fordescape #b129a #b129 #wiring | Carl's Garage