{"nhtsa_id":10187811,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-02","date":"2021-02-10","document_id":"21B08","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Some of the affected vehicles may have software logic errors affecting the heated mirror and the ITRM. The heated mirror may not output heat at temperatures below zero degrees Celsius. Also, a battery drain may occur under a certain sequence of events due to a logic error in the ITRM. Under certain specific sequence, the ITRM battery drain may result in the inability to start the vehicle. A customer could experience a battery drain within 14 hours under the following conditions: the trailer is connected, vehicle is unlocked, parked, and the engine is off.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187811-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187811-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10187811","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-150","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_ford_f-150"]}],"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":[]}