Freightliner Cascadia 2017–2021 — technical service bulletin
Bulletin SS1034684 · NHTSA communication 10173646 · issued Apr 8, 2020
Technical service bulletin
communication type
Electrical System
component
2017–2021
model years
5
vehicle entries
Official summary
Service Solution for P4 New Cascadia Road Lamp Strain Relief and Water Protection For Electrical Connection. The connector that attaches to the road lamp is exposed to water spray from the vehicles front tires. Even though the connector is sealed, water spray, in conjunction with wiring that may be pulled sideways, can attribute to water intrusion into the connector.
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.