{"nhtsa_id":11006056,"type":"service_campaign","type_name":"Service campaign","date_added":"2024-08-07","date":"2024-07-09","document_id":"24-01-054H","mfr_campaign":"Service Campaign 9B4","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Certain Elantra hybrid (CN7 HEV), Sonata hybrid (DN8 HEV), and Tucson hybrid (NX4 HEV) vehicles may exhibit a warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High). Follow the procedure in TSB 24-01-054H (or latest version) to perform the update the Battery management System (BMS) software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11006056-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11006056-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11006056","components":[{"id":"electrical","name":"Electrical 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"]}],"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":[]}