2015 Ford F450 Super Duty Crew Cab Owner Manual Printing 2 - Page 171

Traction Control System Indicator Lights and Messages WARNING If a failure has been detected within the AdvanceTrac system, the stability control light will illuminate steadily. Verify that the traction control system was not manually disabled using the stability control button. If the stability control light still illuminates steadily, have the system serviced by an authorized dealer immediately. Operating your vehicle with traction control disabled could lead to an increased risk of loss of vehicle control, vehicle rollover, personal injury and death. The stability control light temporarily illuminates on E138639 engine start-up and flashes when a driving condition activates the stability system. The stability control off light temporarily illuminates on engine start-up and stays on when you turn the traction control system off, or if a problem occurs in the stability system. 168 Super Duty (), enUSA