# Service bulletin TSB230013

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: 10231924
- Published by NHTSA: 2023\-02\-21
- Manufacturer's number: TSB230013
- Manufacturer's date: 2023\-01\-24
- NHTSA component: ENGINE AND ENGINE COOLING; EQUIPMENT

## NHTSA's summary

This technical service bulletin was issued for A motor high temperature error can display on the instrument cluster.Root Cause: When in the closed position the OEM coolant valve restricts coolant flow through the high voltage propulsion motor. For type C bus: The manual coolant valve is in the OFF position. The coolant valve is located on the left side of the driver?s seat.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231924-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231924-9999.pdf)

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

## Components

Engine, Equipment and accessories

## Vehicles listed

- CUMMINS HDZAA

JSON: [/v1/bulletins/10231924](/v1/bulletins/10231924)

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