{"nhtsa_id":10076423,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-07-14","date":"2016-04-01","document_id":"16-AT-002-1","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM","mfr_system":null,"summary":"TCU & HCU UPDATE – 2011~15 MY SONATA HYBRID (YF HEV) Description: This bulletin provides information related to the TCU and HCU software update for certain 2011~15 Sonata Hybrid (YF-HEV) vehicles with improved 100 mesh solenoids. These updates must be performed for the part numbers shown below only after the transmission has been replaced. If the update is not completed, the transmission may experience a small shift flare or delayed shift.","document":null,"url":"https://open.wenmarpro.com/bulletins/10076423","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"SONATA HYBRID","year_from":2011,"year_to":2015,"match":"base","vehicle_ids":["2011_hyundai_sonata","2012_hyundai_sonata","2013_hyundai_sonata","2014_hyundai_sonata","2015_hyundai_sonata"]}],"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":[]}