{"nhtsa_id":11037866,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-10-02","date":"2026-09-17","document_id":"M1490","mfr_campaign":null,"replaces":null,"component":"FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM; UNKNOWN OR OTHER; ENGINE; POWER TRAIN","mfr_system":null,"summary":"SERVICE BULLETIN M1490 (V 26.9.4): 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). New Software Update. NOTE: The TECHLINK 3 (PART NUMBER: HD-48650-TL3) supports Controller Area Network (CAN) and J-1850 protocol vehicles. • 6-pin CAN vehicles are recommended to use Techlink 3 (TL-3) • All 2021 (and later) vehicles must use TL-3 (connects to Red DLC on the vehicle) • 4-pin (J-1850) vehicles are recommended to use TL-3. This includes all Fuel Injected Harley-Davidson vehicles 2002 and later. TECHLINK 3 (PART NUMBER: HD-48650-TL3) will not support Buell, VDO and Magneti Marelli vehicles (4-pin DLC). Support for those vehicles is available via TECHLINK II (PART NUMBER: HD-48650-1). Version 26.9.4, Release Date: Week of September 17, 2026. New Features, Changes. 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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037866-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037866-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11037866","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"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":2024,"year_to":2026,"match":"exact","vehicle_ids":["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":[]}],"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":[]}