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Service bulletin SS1034670

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10172592
Published by NHTSA2020-03-19
Manufacturer's numberSS1034670
Manufacturer's date2020-03-18
NHTSA componentELECTRICAL SYSTEM

NHTSA's 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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
FREIGHTLINER CASCADIA2020, 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20213992021-06-25. Electrical
21V4810002021-06-25. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
19V1370002019-02-27. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
FleetCom 1_Solenoid2026-05-02. Other. Fleet Communications for solenoid issues
FleetCom_SS 3174-FTL2025-12-06. Other. Fleet Communication for SS 3174-FTL
FleetCom_AMP Draw2025-12-06. Other. Fleet Communications for Key off amp draw
CXA_10_25_Tech Questions2025-11-05. Other. CX Advocate for technical questions/issues raised
SS3176-FTL2025-05-02. Other. Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
CXA 4_25_Elec Pwr Steer2025-05-02. Other. CX Advocate for ICC5 erroneous electric power steering warning message (SS3176-FTL)
SS3176-FTL2025-04-02. Other. Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
SS3174-FTL2025-04-02. Other. Service Solution for ICC5 B-Panel Gauges Intermittently Not Being Displayed
SS3161-FTL2025-01-29. Other. Service Solution for Cascadia intermittent no-start and CPC not configured message
FAB3372025-01-07. Other. FAB 337 for 4th and Fifth Gen Cascadia RP1226 - Progressive Low Voltage Disconnect (PLVD)