# Service bulletin SB970

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: 11015201
- Published by NHTSA: 2025\-03\-06
- Manufacturer's number: SB970
- Manufacturer's date: 2025\-02\-19
- NHTSA component: UNKNOWN OR OTHER; ELECTRICAL SYSTEM

## NHTSA's summary

DSR\-III microprocessor control boards will be replaced by DSR 3.1 microprocessor control boards due to obsolete components on the circuit board. Form, fit, and function are the same as DSR\-III. DSR 3.1 requires new software \(Msk841.xx\) and new parameter files and is not backwards compatible with DSR\-III.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015201-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015201-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- THERMO KING V\-220
- THERMO KING V\-320
- THERMO KING V\-800

JSON: [/v1/bulletins/11015201](/v1/bulletins/11015201)

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