{"nhtsa_id":11021865,"type":"service_campaign","type_name":"Service campaign","date_added":"2025-08-14","date":"2025-08-08","document_id":"25-01-043H TSB","mfr_campaign":"TCW","replaces":null,"component":"EXTERIOR LIGHTING","mfr_system":null,"summary":"Some Kona (SX2) vehicles may experience battery drain due to faulty logic keeping the taillights illuminated while the vehicle is parked and turned off. Follow the procedures outlined in this TSB to update the Body Domain Controller (BDC) to the latest software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11021865-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11021865-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11021865","components":[{"id":"lighting","name":"Lighting","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"KONA","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_hyundai_kona","2025_hyundai_kona"]}],"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":[]}