# 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.

- Type: Service bulletin
- NHTSA id: 10172592
- Published by NHTSA: 2020\-03\-19
- Manufacturer's number: SS1034670
- Manufacturer's date: 2020\-03\-18
- NHTSA component: ELECTRICAL 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172592-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172592-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2020 to 2021 FREIGHTLINER CASCADIA

## Recalls for the same vehicles and component

- [2021399](/recalls/tc/2021399.md), 2021-06-25: Electrical
- [21V481000](/recalls/nhtsa/21V481000.md), 2021-06-25: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
- [19V137000](/recalls/nhtsa/19V137000.md), 2019-02-27: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)

## Other bulletins for the same vehicles and component

- [FleetCom 1\_Solenoid](/bulletins/11031966.md), 2026-05-02, Other: ELECTRICAL SYSTEM. Fleet Communications for solenoid issues
- [FleetCom\_SS 3174\-FTL](/bulletins/11026469.md), 2025-12-06, Other: ELECTRICAL SYSTEM. Fleet Communication for SS 3174\-FTL
- [FleetCom\_AMP Draw](/bulletins/11026454.md), 2025-12-06, Other: ELECTRICAL SYSTEM. Fleet Communications for Key off amp draw
- [CXA\_10\_25\_Tech Questions](/bulletins/11024966.md), 2025-11-05, Other: ELECTRICAL SYSTEM; POWER TRAIN. CX Advocate for technical questions/issues raised
- [SS3176\-FTL](/bulletins/11017537.md), 2025-05-02, Other: ELECTRICAL SYSTEM. Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
- [CXA 4\_25\_Elec Pwr Steer](/bulletins/11017529.md), 2025-05-02, Other: ELECTRICAL SYSTEM. CX Advocate for ICC5 erroneous electric power steering warning message \(SS3176\-FTL\)
- [SS3176\-FTL](/bulletins/11016335.md), 2025-04-02, Other: ELECTRICAL SYSTEM. Service Solution for ICC5 Erroneous Electric Power Steering Warning Message
- [SS3174\-FTL](/bulletins/11016315.md), 2025-04-02, Other: ELECTRICAL SYSTEM. Service Solution for ICC5 B\-Panel Gauges Intermittently Not Being Displayed
- [SS3161\-FTL](/bulletins/11013215.md), 2025-01-29, Other: ELECTRICAL SYSTEM. Service Solution for Cascadia intermittent no\-start and CPC not configured message
- [FAB337](/bulletins/11012394.md), 2025-01-07, Other: ELECTRICAL SYSTEM. FAB 337 for 4th and Fifth Gen Cascadia RP1226 \- Progressive Low Voltage Disconnect \(PLVD\)

JSON: [/v1/bulletins/10172592](/v1/bulletins/10172592)

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