{"nhtsa_id":10199175,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-07-12","date":"2021-06-18","document_id":"NTB21-053","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM","mfr_system":null,"summary":"2021 SENTRA; NO START DUE TO BATTERY DISCHARGE THROUGH AUDIO UNIT IF YOU CONFIRM The customer states that the engine would not crank, or cranked slowly and would not start. ACTION 1. Test the vehicle's 12 volt battery using the Midtronics DSS-5000 and recharge, or replace, the battery if necessary. 2. Confirm the current audio head unit software is version 321. 3. If the version is 321, update the audio head unit software to version 420.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10199175-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10199175-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10199175","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"NISSAN","model":"SENTRA","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_nissan_sentra"]}],"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":[]}