Freightliner Cascadia 2019–2025 — technical service bulletin
Bulletin CXA 11_21_P4 J1939 Commun · NHTSA communication 11011098 · issued Nov 21, 2024
Technical service bulletin
communication type
Power Train
component
2019–2025
model years
7
vehicle entries
Official summary
CX Advocate for P4 J1939 Communication Errors (TSB54-366-FTL)
Vehicles covered
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.