{"nhtsa_id":11031146,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-08","date":"2026-04-08","document_id":"M1490","mfr_campaign":null,"replaces":null,"component":"FUEL/PROPULSION SYSTEM; UNKNOWN OR OTHER; EXTERIOR LIGHTING; POWER TRAIN; ELECTRICAL SYSTEM","mfr_system":null,"summary":"SERVICE BULLETIN M1490 (V 26.5.2): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software update to Digital Technician II (DT II). DIGITAL TECHNICIAN II (PART NUMBER: HD-48650). Version 26.5.2 Release Date: Week of March 30, 2026. NOTE Software version (26.4.3) will need to be manually installed only if current software version of DT II is (26.0.2). After (26.4.3) is manually installed, automatic updates will bring DT II to the latest software version. Refer to bulletin M1713 for instructions. New Features. 2024: Pan America (RA1250), Pan America Special (RA1250S), CVO Pan America (RA1250SE) • Updated Body Control Module (BCM) reflash calibration. 2024-2026: CVO Road Glide ST (FLTRXSTSE) • Updated Electronic Control Module (ECM) reflash calibration. 2026: CVO Street Glide ST (FLHXSTSE) • Updated ECM reflash calibration. Changes. 2026 Trike • Update “Reverse Lockout Reason” to support new values, • “Vehicle setup: Gear Indicator Calibration” – improve operation. 2025-2026 Softail • Update reflash for Softail Speedometer (SPDO) – enable operation of auxiliary lamp telltale. LiveWire S2 • Provide reflash support for Vehicle Supervisory Controller (VSC) hardware (Part No. 41001756RE).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031146-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031146-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031146","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"LIVEWIRE","model":"LIVEWIRE","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_livewire_livewire"]},{"make":"LIVEWIRE","model":"LIVEWIRE ONE","year_from":2021,"year_to":2024,"match":"exact","vehicle_ids":["2021_livewire_livewire-one","2022_livewire_livewire-one","2023_livewire_livewire-one","2024_livewire_livewire-one"]},{"make":"LIVEWIRE","model":"S2 ALPINISTA","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_livewire_s2-alpinista","2026_livewire_s2-alpinista"]},{"make":"LIVEWIRE","model":"S2 DEL MAR","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_livewire_s2-del-mar","2024_livewire_s2-del-mar","2025_livewire_s2-del-mar","2026_livewire_s2-del-mar"]},{"make":"LIVEWIRE","model":"S2 MULHOLLAND","year_from":2024,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"LIVEWIRE","model":"TWO UP KIT","year_from":null,"year_to":null,"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":[]}