Freightliner Cascadia 2007–2017 — technical service bulletin
Bulletin SS1034598 · NHTSA communication 10169693 · issued Jan 2, 2020
Technical service bulletin
communication type
Equipment
component
2007–2017
model years
11
vehicle entries
Official summary
Service Solution for Legacy Cascadia, where trailer turn signals or 4-way flashers used in applications with high duty cycles, the left and right turn signals may experience shortened relay life.
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.