Freightliner Cascadia 2012–2021 — technical service bulletin
Bulletin CALHIGHCURRENT · NHTSA communication 10171911 · issued Mar 2, 2020
Technical service bulletin
communication type
Electrical System
component
2012–2021
model years
10
vehicle entries
Official summary
Customer Advisory Letter that an inspection to determine if the high current breaker has been bypassed.
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.