{"nhtsa_id":11037393,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-09-19","date":"2026-09-10","document_id":"SC367_TSB","mfr_campaign":"SC367","replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE","mfr_system":null,"summary":"TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2019-2020 MY Optima vehicles manufactured from May 21, 2018, through June 1, 2020, equipped with the 1.6L T-GDI engine to ensure compliance with emissions. Kia has become aware that the subject vehicles may have been produced with engine calibrations that can cause the vehicle to release air pollutants that exceed Federal and California standards. These standards were established to protect the public’s health and welfare from the dangers of air pollution.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037393-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037393-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11037393","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2019,"year_to":2020,"match":"exact","vehicle_ids":["2019_kia_optima","2020_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":[]}