{"nhtsa_id":10241883,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-09-06","date":"2023-08-25","document_id":"23-HC-002H","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); POWER TRAIN","mfr_system":null,"summary":"This bulletin provides information related to the Engine Control Module (ECM) software update and coolant replacement for 2020-2023MY Sonata Hybrid (DN8 HEV) vehicles to improve the coolant filling mode by discharging air bubbles.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10241883-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10241883-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10241883","components":[{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"engine-control-module","name":"Engine control module","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"SONATA HYBRID","year_from":2020,"year_to":2023,"match":"base","vehicle_ids":["2020_hyundai_sonata","2021_hyundai_sonata","2022_hyundai_sonata","2023_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":[]}