{"nhtsa_id":10189561,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-31","date":"2021-03-15","document_id":"SSM 49661","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L diesel engine or a 7.3L gas engine and dual alternators may require disabling or enabling the use of the second alternator. The FDRS scan tool now has an application available to allow for disabling or enabling the use of the second alternator. Start a vehicle session in FDRS using the vehicles VIN and go to the toolbox tab. The PCM will have an application called Generator Configuration. Download and run this application to enable or disable the second alternator. Next perform a Battery Monitor System (BMS) Reset. Download and run this reset and clear any DTCs.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10189561-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10189561-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10189561","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-250 SD","year_from":2020,"year_to":2021,"match":"base","vehicle_ids":["2020_ford_f-250","2021_ford_f-250"]},{"make":"FORD","model":"F-350 SD","year_from":2020,"year_to":2021,"match":"base","vehicle_ids":["2020_ford_f-350","2021_ford_f-350"]},{"make":"FORD","model":"F-450 SD","year_from":2020,"year_to":2021,"match":"base","vehicle_ids":["2020_ford_f-450","2021_ford_f-450"]},{"make":"FORD","model":"F-550 SD","year_from":2020,"year_to":2021,"match":"base","vehicle_ids":["2020_ford_f-550","2021_ford_f-550"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}