# Service bulletin MCI Field Notes

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: 10129950
- Published by NHTSA: 2018\-03\-12
- Manufacturer's number: MCI Field Notes
- Manufacturer's date: 2018\-02\-02
- NHTSA component: ENGINE; ELECTRICAL SYSTEM

## NHTSA's summary

This Service Advisory informs affected owners of model year 2012\-2018 J4500 model coaches that the Fan Test Switch, in the remote JBox, in some instances has been accidentally turned on and left on, resulting in the engine running cool and inefficient for extended periods of time and that MCI has developed 2 interim options and that MCI will be cutting in as a standard, a switch cover. An exact VIN cut in number is currently in process.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10129950-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10129950-0001.pdf)

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

## Components

Electrical system, Engine

## Vehicles listed

- 2012 to 2018 MCI J4500

JSON: [/v1/bulletins/10129950](/v1/bulletins/10129950)

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