{"nhtsa_id":11014285,"type":"service_campaign","type_name":"Service campaign","date_added":"2025-02-17","date":"2025-02-11","document_id":"25-01-010H TSB","mfr_campaign":"9B4","replaces":null,"component":"FUEL/PROPULSION SYSTEM","mfr_system":null,"summary":"This bulletin provides the procedure to update the software for the Battery Management System (BMS) on certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles that may exhibit a warning light with DTC P1BB20.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11014285-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11014285-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11014285","components":[{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"ELANTRA HYBRID","year_from":2021,"year_to":2023,"match":"base","vehicle_ids":["2021_hyundai_elantra","2022_hyundai_elantra","2023_hyundai_elantra"]},{"make":"HYUNDAI","model":"SONATA HYBRID","year_from":2020,"year_to":2022,"match":"base","vehicle_ids":["2020_hyundai_sonata","2021_hyundai_sonata","2022_hyundai_sonata"]},{"make":"HYUNDAI","model":"TUCSON HYBRID","year_from":2022,"year_to":2022,"match":"base","vehicle_ids":["2022_hyundai_tucson"]},{"make":"HYUNDAI","model":"TUCSON HYBRID","year_from":2024,"year_to":2024,"match":"base","vehicle_ids":["2024_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":[]}