# Service bulletin CBR 2484\-4 082025

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: 11022280
- Published by NHTSA: 2025\-09\-02
- Manufacturer's number: CBR 2484\-4 082025
- Manufacturer's date: 2025\-08\-04
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

CBR \- The Purpose of this CBR is to assist with diagnostics for fault code U300049 on the Battery Power Management Unit \(BPMU\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022280-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022280-9999.pdf)

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

## Components

Electrical system

## Trouble codes named

U3000

## Vehicles listed

- 2025 to 2026 VOLVO VNL \(4\)

JSON: [/v1/bulletins/11022280](/v1/bulletins/11022280)

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