{"nhtsa_id":11028664,"type":"service_campaign","type_name":"Service campaign","date_added":"2026-02-10","date":"2026-02-03","document_id":"26-01-010H DN","mfr_campaign":"9C9","replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Certain Palisade (LX2) vehicles equipped with 3.8L GDI Lambda II engines may not meet engine-out NOx (Nitrogen Oxides) and Particulate Matter (PM) emission standards. The service procedure provides an update to the emission logic within the Engine Control Module (ECM) to improve engine-out NOx and PM emissions, so they are within permissible specifications. Additionally, improvements to reduce noise during engine start, and enhanced thermostat logic, are also included in the updated ECM software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028664-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028664-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028664","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"PALISADE","year_from":2020,"year_to":2025,"match":"exact","vehicle_ids":["2020_hyundai_palisade","2021_hyundai_palisade","2022_hyundai_palisade","2023_hyundai_palisade","2024_hyundai_palisade","2025_hyundai_palisade"]}],"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":[]}