{"nhtsa_id":11020593,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-07-09","date":"2025-07-07","document_id":"TSB_ ENG256","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":"ENG","summary":"TECHNICAL SERVICE BULLETIN: CONTINUOUS VARIABLE VALVE DURATION (CVVD) ACTUATOR OIL SEAL REPLACEMENT - This bulletin provides information to replace the Continuous Variable Valve Duration (CVVD) Actuator seal on some 2021-2022MY Sorento P/HEV (MQ4 P/HEV) vehicles produced from September 02, 2020, through February 24, 2022. The affected vehicles may experience a slow oil leak coming from the CVVD actuator oil seal and potentially associated oil smell due to the oil seal material degrading over time.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020593-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020593-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11020593","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"SORENTO HYBRID","year_from":2021,"year_to":2022,"match":"base","vehicle_ids":["2021_kia_sorento","2022_kia_sorento"]},{"make":"KIA","model":"SORENTO PHEV","year_from":2021,"year_to":2022,"match":"base","vehicle_ids":["2021_kia_sorento","2022_kia_sorento"]}],"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":[]}