# Warranty extension 167\-W2503\-1

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: Warranty extension
- NHTSA id: 11015168
- Published by NHTSA: 2025\-03\-06
- Manufacturer's number: 167\-W2503\-1
- Manufacturer's date: 2025\-02\-25
- Campaign id or software version: AB1Q0
- NHTSA component: ENGINE

## NHTSA's summary

CONVENTIONAL COOLANT LEVEL SENSOR – AB1Q0 Due to an internal malfunction of the Coolant level sensor, the MIL may be illuminated or the “Low coolant level” warning light may be illuminated intermittently with a “Low coolant” message on the instrument cluster regardless of the amount of coolant.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015168-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11015168-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2022 to 2023 HINO CONVENTIONAL MODELS

JSON: [/v1/bulletins/11015168](/v1/bulletins/11015168)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Warranty%20extension%20167-W2503-1&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11015168&vehicle=Warranty%20extension%20167-W2503-1)