Freightliner Cascadia 2017–2020 — technical service bulletin
Bulletin CALFTL54-005 · NHTSA communication 10168126 · issued Nov 21, 2019
Technical service bulletin
communication type
Electrical System
component
2017–2020
model years
4
vehicle entries
Official summary
Customer Advisory Letter communicating how to minimize the risk of a heat damaged headlamp, or progressive damage to a vehicle due to an improperly installed halogen headlamp bulb,
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.