Freightliner Cascadia 2017–2022 — technical service bulletin
Bulletin SB54-348 · NHTSA communication 10207310 · issued Jan 21, 2022
Technical service bulletin
communication type
Power Train
component
2017–2022
model years
6
vehicle entries
Official summary
Meritor Rear Axle Temperature Parameters On Cascadia vehicles equipped with Meritor drive axles, the high temperature warning parameter is set too low for some applications, for vehicles equipped with synthetic oil, and for certain conditions that are not harmful to the axle.
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.