Freightliner Cascadia 2017–2021 — technical service bulletin
Bulletin SS1034758 · NHTSA communication 10177654 · issued Jul 17, 2020
Technical service bulletin
communication type
Visibility
component
2017–2021
model years
5
vehicle entries
Official summary
Service Solution for New Cascadia Window Regulator Motor Stop Working. The window regulators motors are not designed to be run continuously. The window regulator motors have a thermal cutoff. If they are run long enough, there will eventually be an open circuit and get a fault code.
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.