Freightliner Cascadia 2017–2021 — technical service bulletin
Bulletin Techtalk6578 · NHTSA communication 10184895 · issued Dec 22, 2020
Technical service bulletin
communication type
Service Brakes, Air
component
2017–2021
model years
5
vehicle entries
Official summary
Tech Talk discussion on New Cascadia "low air pressure" warning light.
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.