Freightliner Cascadia 2016–2019 — technical service bulletin
Bulletin FL780 · NHTSA communication 10161067 · issued Apr 9, 2019
Technical service bulletin
communication type
Electrical System
component
2016–2019
model years
4
vehicle entries
Official summary
Cascadia ICUC Bulb Check Function
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.