Freightliner Cascadia 2020–2022 — technical service bulletin
Bulletin CALFTL54-009 · NHTSA communication 10194446 · issued May 22, 2020
Technical service bulletin
communication type
Service Brakes, Air
component
2020–2022
model years
3
vehicle entries
Official summary
Customer Advisory Letter on New Cascadia ABS Fault Codes 520216/31 and 629/11
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.