{"nhtsa_id":10146841,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-11-05","date":"2016-09-01","document_id":"B612016","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"POWER LOSS AT VERY LOW SOC OF HV BATTERY. The vehicle may exhibit any of the following at very low State of Charge (SOC) - less than 8%: Power loss while running range extender (REx). Inconsistent performance of the Rex. High voltage system shutdown in vehicles without REx. Excessively high range displayed in instrument cluster. The following fault codes may be stored in the battery management electronics (SME): 21F13D - High-voltage battery, switch contactors: Switch-off after a fault 21F241 - High-voltage battery, cell supervision circuit 1: Undervoltage (at least one cell) 21F242 - High-voltage battery, cell supervision circuit 2: Undervoltage (at least one cell) 21F243 - High-voltage battery, cell supervision circuit 3: Undervoltage (at least one cell) 21F244 - High-voltage battery, cell supervision circuit 4: Undervoltage (at least one cell) 21F245 - High-voltage battery, cell supervision circuit 5: Undervoltage (at least one cell) 21F246 - High-voltage battery, cell supervision circuit 6: Undervoltage (at least one cell) 21F247 - High-voltage battery, cell supervision circuit 7: Undervoltage (at least one cell) 21F248 - High-voltage battery, cell supervision circuit 8: Undervoltage (at least one cell) Ineffective SME software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10146841-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10146841-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10146841","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"I3","year_from":2014,"year_to":2017,"match":"exact","vehicle_ids":["2014_bmw_i3","2015_bmw_i3","2016_bmw_i3","2017_bmw_i3"]}],"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":[]}