Home >> Saab >> 2010 >> 9-5 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting And Signaling Systems >> Fault diagnosis, fault codes >> DTC B3410: Automatic Headlamp Leveling Control Module Front Axle Sensor Signal Circuit or B3420: Automatic Headlamp Leveling Control Module Rear Axle Sensor Signal Circuit >> Action Taken When the DTC Sets