Freightliner Cascadia 2017–2022 — technical service bulletin
Bulletin SB54-322 · NHTSA communication 10190985 · issued Apr 26, 2021
Technical service bulletin
communication type
Visibility
component
2017–2022
model years
6
vehicle entries
Official summary
Updated Freightliner Service Bulletin for Adjusting Automatic Temperature Control Range with Optimized Idle. This bulletin replaces the version dated 12/06/2019. Tables 3 and 4 have been updated. Steps to change and match HVAC desired settings have been updated.
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.