{"nhtsa_id":11037316,"type":"other","type_name":"Other","date_added":"2026-09-15","date":"2026-08-11","document_id":"ZMDN082026-01","mfr_campaign":"MBB V46, BMU V22, BMS V28","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"Firmware","summary":"We would like to inform you that a new firmware release for the 2020+ Cypher III platform will soon be available. 2020+ SR/F & SR/S + 2022–25 SR + 2023+ DSR/X + 2024+ S, DS & DSR Firmware Versions MBB V46, BMU V22, BMS V28 New Features & Improvements •The Battery State of Health (SOH) for each battery module will now be accessible through dealer diagnostic tools. •Resolved issue where motorcycles equipped with a Power Tank could, under certain conditions riding only on the Power Tank before the main traction battery pack had been detected. This could result in reduced range and potential power loss. •Following this update, the motorcycle will wait for the main traction battery pack to be detected before it can be ridden. On motorcycles equipped with a Power Tank, a brief delay at key-on may occur occasionally. Charging is not affected. •Resolved issue where the displayed State of Charge (SOC) could increase unexpectedly near the end of a discharge, causing the estimated remaining range to be higher than the range actually available. Firmware Availability and Rollout The CIII-4.1.0 firmware will be made available through the Tuner Tool, Zero Motorcycles mobile apps for Android and iOS, and CCM firmware over-the-air (OTA). •Tuner Tool: The firmware will be available to all Tuner Tool installations from August 12, 2026. •Mobile apps and CCM OTA: The firmware will be released incrementally, with the rollout reaching 100% by August 24, 2026.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037316-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037316-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11037316","components":[],"codes":[],"topics":[],"vehicles":[{"make":"ZERO","model":"DS","year_from":2024,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"ZERO","model":"DSR","year_from":2024,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"ZERO","model":"DSR/X","year_from":2023,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"ZERO","model":"S","year_from":2024,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"ZERO","model":"SR","year_from":2022,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"ZERO","model":"SR/F","year_from":2020,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"ZERO","model":"SR/S","year_from":2020,"year_to":2026,"match":null,"vehicle_ids":[]}],"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":[]}