# Service bulletin 167\-2503\-2

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: 11015165
- Published by NHTSA: 2025\-03\-06
- Manufacturer's number: 167\-2503\-2
- Manufacturer's date: 2025\-02\-19
- Campaign id or software version: TT\-25\-002
- NHTSA component: VEHICLE SPEED CONTROL; ENGINE; SERVICE BRAKES

## NHTSA's summary

TT\-25\-002 EXHAUST BRAKE ADJUSTMENT USING DX3 This bulletin explains how to properly check and adjust the exhaust brake for 2016\- 2021MY Conventional and 2013\-2020MY COE Hino trucks

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015165-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015165-9999.pdf)

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

## Components

Brakes, Engine, Throttle and cruise control

## Vehicles listed

- HINO HINO

JSON: [/v1/bulletins/11015165](/v1/bulletins/11015165)

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