{"nhtsa_id":10186652,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-02-04","date":"2021-01-29","document_id":"SSM 49511","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Some 2021 Mustang Mach-E vehicles may exhibit a condition of the high voltage battery coolant expansion tank reading over the max fill line. The max fill line may be disregarded, only the min line is relevant. Do not attempt to remove coolant from the high voltage battery coolant expansion tank if the coolant level is above the max fill line.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10186652-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10186652-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10186652","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"MUSTANG","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_ford_mustang"]}],"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":[]}