{"nhtsa_id":11026831,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-12-24","date":"2025-12-20","document_id":"LI54.10-P-069138","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Complaint The following symptoms with electrical range: • Displayed electrical range is implausible for charging process (SOC) . • Displayed electrical range reduces rapidly after short period of driving. • High-voltage battery can no longer charge. Cause The voltage difference (maximum cell voltage minus minimum cell voltage) within the high-voltage battery is too great (> 100 mV). In an extreme case, no individual cell voltages are displayed in the Battery Management System (BMS) anymore (signal not available). Remedy Replace high-voltage battery. Note on analysis for transportability: The transportability assessment should be conducted promptly, as the high self-discharge level means that an assessment at a later stage may no longer be possible. Conduct the transportability assessment using the diagnostic system, to do so, select menu item \"Special procedures\" -> see also WISnet AR54.10-P-1140SRE, operation step 2. The procedure, if no individual cell voltages can be read out (signal not available - SNA), is also described in the diagnosis procedure.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026831-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026831-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11026831","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"SMART","model":"FORTWO","year_from":2017,"year_to":2019,"match":"exact","vehicle_ids":["2017_smart_fortwo","2018_smart_fortwo","2019_smart_fortwo"]},{"make":"SMART","model":"FORTWO CABRIOLET","year_from":2017,"year_to":2017,"match":"base","vehicle_ids":["2017_smart_fortwo"]}],"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":[]}