{"nhtsa_id":10132768,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-04-02","date":"2014-06-25","document_id":"T-SB-0174-12 Rev","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE","mfr_system":null,"summary":"TSB: Some 2004 ? 2009 model year Prius vehicles may exhibit a MIL ?ON? and brake warning lights (ABS/VSC) illuminated in the instrument panel with Diagnostic Trouble Code (DTC) C1247 (Stroke Sensor Malfunction) stored in the ABS/VSC Electronic Control Unit (ECU). This DTC may set as a result of an overly sensitive monitoring logic without any other ABS/VSC system issue. Follow the Repair Procedure in this bulletin to properly diagnose the system and, if necessary, replace the ABS/VSC ECU with an ECU containing the updated monitoring logic.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10132768-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10132768-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10132768","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"abs","name":"Anti-lock brakes","parent":"brakes"}],"codes":["C1247"],"topics":[],"vehicles":[{"make":"TOYOTA","model":"PRIUS","year_from":2004,"year_to":2009,"match":"exact","vehicle_ids":["2004_toyota_prius","2005_toyota_prius","2006_toyota_prius","2007_toyota_prius","2008_toyota_prius","2009_toyota_prius"]}],"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":[]}