{"nhtsa_id":10089421,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-01-24","date":"2016-05-10","document_id":"TSBTRA059","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"HCU/TCU UPGRADE - FOR 100 MESH SOLENOID EQUIPPED HYBRID TRANSMISSIONS -THIS BULLETIN PROVIDES INFORMATION RELATED TO A SOFTWARE UPGRADE OF THE HYBRID CONTROL UNIT (HCU) AND THE TRANSMISSION CONTROL UNIT (TCU) OF SOME 2011-2016 MY OPTIMA HYBRID (TF HEV) VEHICLES AFTER REPLACEMENT OF THE TRANSMISSION WITH IMPROVED 100 MESH SOLONOID FILTERS HAS TAKEN PLACE. TO APPLY THE IMPROVED LOGIC, THE HCU/TCU SHOULD BE REPROGRAMMED USING THE GDS/KDS DOWNLOAD, AS DESCRIBED IN THIS BULLETIN.","document":null,"url":"https://open.wenmarpro.com/bulletins/10089421","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA HYBRID","year_from":2011,"year_to":2016,"match":"base","vehicle_ids":["2011_kia_optima","2012_kia_optima","2013_kia_optima","2014_kia_optima","2015_kia_optima","2016_kia_optima"]}],"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":[]}