{"nhtsa_id":11015658,"type":"service_campaign","type_name":"Service campaign","date_added":"2025-03-17","date":"2025-03-10","document_id":"25-01-021H TSB","mfr_campaign":"TCT","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Certain Tucson (NX4) vehicles may experience a battery discharge due to logic error within the Central Communication Unit (CCU). This bulletin provides instructions to update both subsystems (MCU/AP) related to the CCU to improve the logic of the CCU.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11015658-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11015658-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11015658","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"TUCSON","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_hyundai_tucson"]}],"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":[]}