{"nhtsa_id":10205429,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-23","date":"2021-12-20","document_id":"TSB_ENG232_R1","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"TECHNICAL SERVICE BULLETIN: SERVICE ACTION: ACCELERATION LOGIC IMPROVEMENT (ECU & TCU) (SA490) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure to update the software logic of the Engine Control Unit (ECU) and Transmission Control Unit (TCU) on some 2022MY Sorento (MQ4a) vehicles and Telluride (ON) vehicles produced in the date ranges listed below, which may exhibit rough shift and hesitation during acceleration. Follow the procedure outlined in this publication to apply the improved logic to both the 'ENGINE' and 'A/T' systems using the KDS ECU Upgrade function as described in this bulletin.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10205429-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10205429-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10205429","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"SORENTO","year_from":2022,"year_to":2022,"match":"exact","vehicle_ids":["2022_kia_sorento"]},{"make":"KIA","model":"TELLURIDE","year_from":2022,"year_to":2022,"match":"exact","vehicle_ids":["2022_kia_telluride"]}],"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":[]}