{"nhtsa_id":11026532,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2025-12-10","date":"2025-12-02","document_id":"OTA_SA621","mfr_campaign":"SA621","replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM","mfr_system":"OTA","summary":"RELEASE NOTES: OVER-THE-AIR: SERVICE ACTION SOFTWARE UPDATE FOR WARNING LIGHTS (SA621) - This Over-the-Air (OTA) software update is designed to update the Engine Control Unit (ECU) logic of certain 2025 K4 vehicles. This update improves the processing logic of the Engine Control Unit (ECU) to reduce the unintended display of warning lights.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026532-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026532-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11026532","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"K4","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_kia_k4"]}],"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":[]}