Freightliner Cascadia 2020–2021 — technical service bulletin
Bulletin SS1034670 · NHTSA communication 10172592 · issued Mar 18, 2020
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
2
vehicle entries
Official summary
Service Solution for fault code VRDU 524127/9 - lost communication with the MPC. VRDU fault code 524127/9 is often caused by lack of ignition supply to the MPC, which causes it to stop communicating.
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.