Freightliner Business Class M2 2019–2026 — technical service bulletin
Bulletin FAB343 · NHTSA communication 11017549 · issued Apr 18, 2025
Technical service bulletin
communication type
Unknown OR 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.