Freightliner Cascadia 2017–2022 — technical service bulletin
Bulletin CALFTL54-015 · NHTSA communication 10189346 · issued Mar 5, 2021
Technical service bulletin
communication type
Electrical System
component
2017–2022
model years
6
vehicle entries
Official summary
Customer Advisory Letter for Disabling the Park Brake Drag ICU Warning Message.
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.