# 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: 10180099
- Published by NHTSA: 2020\-09\-24
- Manufacturer's number: SS1034670
- Manufacturer's date: 2020\-09\-16
- NHTSA component: ELECTRICAL SYSTEM:IGNITION; ENGINE; EQUIPMENT

## NHTSA's summary

Service Solution for Fault Code VRDU 524127/9 \- Lost Communication with the MPC. This Service Solution has been superseded to service bulletins SB 54\-336 and 54\-329. Please see the service bulletins for the most current information. VRDU fault code 524127/9 is often caused by lack of ignition supply to the MPC, which causes it to stop communicating. This usually occurs when voltage is low.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180099-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180099-9999.pdf)

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

## Components

Electrical system, Engine, Equipment and accessories, Ignition

## Vehicles listed

- 2020 to 2021 FREIGHTLINER CASCADIA

JSON: [/v1/bulletins/10180099](/v1/bulletins/10180099)

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