Harley-Davidson FLD 2010–2025 — technical service bulletin
Bulletin M1490 · NHTSA communication 11023967 · issued Sep 6, 2025
Technical service bulletin
communication type
Electrical System
component
2010–2025
model years
60
vehicle entries
Official summary
SERVICE BULLETIN M1490 (V 25.8.9): 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 Version 25.8.9 Release Date: Week of September 2, 2025. Changes: LiveWire 2024 S2MH: Removal of incorrect Electro Hydraulic Control Unit (EHCU) reflash support; EHCU Module (Part No. 41100123): Addressed issue where module became unrecoverable after failed reflash attempted. NOTE: Digital Technician II (DT II) supp
Vehicles covered
- 2012 Harley-Davidson FLD
- 2014 Harley-Davidson FLD
- 2015 Harley-Davidson FLD
- 2016 Harley-Davidson FLD
- 2017 Harley-Davidson Flde
- 2018 Harley-Davidson Flde
- 2019 Harley-Davidson Flde
- 2020 Harley-Davidson Flde
- 2018 Harley-Davidson FLFB
- 2019 Harley-Davidson FLFB
- 2025 Harley-Davidson FLFB
- 2018 Harley-Davidson Flfbs
- 2019 Harley-Davidson Flfbs
- 2020 Harley-Davidson Flfbs
- 2021 Harley-Davidson Flfbs
- 2022 Harley-Davidson Flfbs
- 2023 Harley-Davidson Flfbs
- 2024 Harley-Davidson Flfbs
- 2018 Harley-Davidson Flfbs Anv
- 2020 Harley-Davidson Flfbsanv
- 2023 Harley-Davidson Flfbsanv
- 2018 Harley-Davidson Flfbs Anx
- 2021 Harley-Davidson FLH
- 2017 Harley-Davidson FLHC
- 2018 Harley-Davidson FLHC
- 2019 Harley-Davidson FLHC
- 2020 Harley-Davidson FLHC
- 2021 Harley-Davidson FLHC
- 2025 Harley-Davidson FLHC
- 2018 Harley-Davidson Flhcs
- 2019 Harley-Davidson Flhcs
- 2020 Harley-Davidson Flhcs
- 2021 Harley-Davidson Flhcs
- 2022 Harley-Davidson Flhcs
- 2023 Harley-Davidson Flhcs
- 2024 Harley-Davidson Flhcs
- 2018 Harley-Davidson Flhcs Anv
- 2019 Harley-Davidson Flhcs Anv
- 2020 Harley-Davidson Flhcs Anv
- 2021 Harley-Davidson Flhcs Anv
- 2022 Harley-Davidson Flhcs Anv
- 2023 Harley-Davidson Flhcs Anv
- 2023 Harley-Davidson Flhfb
- 2010 Harley-Davidson FLHP
- 2011 Harley-Davidson FLHP
- 2012 Harley-Davidson FLHP
- 2013 Harley-Davidson FLHP
- 2014 Harley-Davidson FLHP
- 2015 Harley-Davidson FLHP
- 2016 Harley-Davidson FLHP
- 2017 Harley-Davidson FLHP
- 2018 Harley-Davidson FLHP
- 2019 Harley-Davidson FLHP
- 2020 Harley-Davidson FLHP
- 2021 Harley-Davidson FLHP
- 2022 Harley-Davidson FLHP
- 2023 Harley-Davidson FLHP
- 2024 Harley-Davidson FLHP
- 2025 Harley-Davidson FLHP
- 2010 Harley-Davidson Flhpe
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.