Freightliner Cascadia 2019–2022 — technical service bulletin
Bulletin SF622 · NHTSA communication 10200611 · issued Aug 24, 2021
Technical service bulletin
communication type
Service Brakes, Hydraulic
component
2019–2022
model years
6
vehicle entries
Official summary
Revised Field Service Campaign for Cascadia/49X ABS MBSP+ Controller Software Update. REVISION: The work instructions have been revised. Certain vehicles have a WABCO Anti-Lock Braking System (ABS) controller that logs excessive 629-11 fault codes which subsequently lead to additional downstream fault codes.
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.