{"nhtsa_id":10198129,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-06-21","date":"2021-05-11","document_id":"T-SB-0028-21","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, HYDRAULIC:FLUID; EQUIPMENT; ELECTRICAL SYSTEM","mfr_system":null,"summary":"TSB: Some 2012 ? 2014 model year Prius C hybrid vehicles may exhibit a condition in which the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. Diagnostic Trouble Codes (DTCs) C1391, C1252, C1256, and/or C1253 may also be stored. This condition may be caused by a small internal brake fluid leak inside the brake booster assembly with master cylinder. Follow the Repair Procedure in this bulletin to address this condition.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198129-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198129-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10198129","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"brake-fluid","name":"Brake fluid","parent":"brakes"}],"codes":["C1252","C1253","C1256","C1391"],"topics":[],"vehicles":[{"make":"TOYOTA","model":"PRIUS C","year_from":2012,"year_to":2014,"match":"exact","vehicle_ids":["2012_toyota_prius-c","2013_toyota_prius-c","2014_toyota_prius-c"]}],"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":[]}