Freightliner Cascadia 2019–2021 — technical service bulletin
Bulletin SF630 · NHTSA communication 10202736 · issued Oct 13, 2021
Technical service bulletin
communication type
Lane Departure
component
2019–2021
model years
3
vehicle entries
Official summary
Cascadia Lane Assist Software. Certain vehicles may experience the loss of Active Lane Assist (ALA) while driving due to decreased sensitivity of the steering wheel, with no visible indicator to the operator. ALA is an accessory system and the driver controlled steering function including power steering is not affected.
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.