Freightliner Cascadia 2019–2023 — technical service bulletin
Bulletin SF657 · NHTSA communication 10222237 · issued Sep 20, 2022
Technical service bulletin
communication type
Electrical System
component
2019–2023
model years
9
vehicle entries
Official summary
Revised Freightliner and Western Star CTP Software Update REVISION: New tools are required. The USB stick with SF657 software already loaded, along with the USB stick to CTP adaptor harness that is On-the-Go (OTG) protocol compliant, now have part numbers that can be purchased through the parts distribution center (PDC).
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.