{"nhtsa_id":11019904,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-07-01","date":"2025-06-26","document_id":"SC338_TSB","mfr_campaign":"SC338","replaces":null,"component":"FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM","mfr_system":null,"summary":"TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC338) - This bulletin provides information to upgrade the Battery Management System ‘BMS’ software logic on certain 2023MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, and 2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11019904-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11019904-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11019904","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":["P1BB2"],"topics":[],"vehicles":[{"make":"KIA","model":"NIRO","year_from":2023,"year_to":2024,"match":"exact","vehicle_ids":["2023_kia_niro","2024_kia_niro"]},{"make":"KIA","model":"SPORTAGE HYBRID","year_from":2023,"year_to":2024,"match":"base","vehicle_ids":["2023_kia_sportage","2024_kia_sportage"]}],"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":[]}