Freightliner Business Class M2 2019–2026 — technical service bulletin
Bulletin FAB343 · NHTSA communication 11017549 · issued Apr 18, 2025
Technical service bulletin
communication type
Unknown / Other
component
2019–2026
model years
39
vehicle entries
Official summary
Features and Benefits for Detroit Connect UpfrontService Extension
Vehicles covered
- 2023 Freightliner Business Class M2
- 2024 Freightliner Business Class M2
- 2025 Freightliner Business Class M2
- 2026 Freightliner Business Class M2
- 2019 Freightliner Cascadia
- 2020 Freightliner Cascadia
- 2021 Freightliner Cascadia
- 2022 Freightliner Cascadia
- 2023 Freightliner Cascadia
- 2024 Freightliner Cascadia
- 2025 Freightliner Cascadia
- 2026 Freightliner Cascadia
- 2022 Freightliner E-Cascadia
- 2023 Freightliner E-Cascadia
- 2024 Freightliner E-Cascadia
- 2025 Freightliner E-Cascadia
- 2026 Freightliner E-Cascadia
- 2022 Freightliner EM2
- 2023 Freightliner EM2
- 2024 Freightliner EM2
- 2025 Freightliner EM2
- 2026 Freightliner EM2
- 2021 Western Star 47X
- 2022 Western Star 47X
- 2023 Western Star 47X
- 2024 Western Star 47X
- 2025 Western Star 47X
- 2026 Western Star 47X
- 2020 Western Star 49X
- 2021 Western Star 49X
- 2022 Western Star 49X
- 2023 Western Star 49X
- 2024 Western Star 49X
- 2025 Western Star 49X
- 2026 Western Star 49X
- 2023 Western Star 57X
- 2024 Western Star 57X
- 2025 Western Star 57X
- 2026 Western Star 57X
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.