{"nhtsa_id":11034545,"type":"service_campaign","type_name":"Service campaign","date_added":"2026-07-06","date":"2026-07-06","document_id":"WTF7","mfr_campaign":"WTF7","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":"Battery: Battery sensor control unit","summary":"Due to a software error in the Battery Management System (BMS), there have been isolated cases of an unintentional software reset and consequently a communication error as a result of implausible time differences. This sometimes causes yellow “Battery low” warning messages followed by red “Vehicle electrical system fault” warning messages to appear on the instrument cluster, which automatically reset themselves after the vehicle has been parked.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034545-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034545-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034545","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PORSCHE","model":"TAYCAN","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN 4","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN 4 CROSS TURISMO","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN 4S","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN 4S CROSS TURISMO","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN GTS SPORT TURISMO","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN TURBO","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN TURBO CROSS TURISM","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN TURBO GT","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN TURBO S","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]},{"make":"PORSCHE","model":"TAYCAN TURBO S CROSS TURI","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_porsche_taycan","2026_porsche_taycan"]}],"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":[]}