# Service bulletin V\-321\-001 202412

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: 11012176
- Published by NHTSA: 2025\-01\-02
- Manufacturer's number: V\-321\-001 202412
- Manufacturer's date: 2024\-12\-01
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Volvo Trucks has identified that some VN model vehicles equipped with auxiliary power unit batteries may experience insufficient battery system charging. This could lead to early battery failure and improper functioning of the auxiliary power systems. Follow the instructions in the attached document to upgrade the charging system.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012176-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012176-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2021 to 2024 VOLVO VAH
- 2021 to 2024 VOLVO VHD
- 2021 to 2024 VOLVO VN

JSON: [/v1/bulletins/11012176](/v1/bulletins/11012176)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20V-321-001%20202412&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11012176&vehicle=Service%20bulletin%20V-321-001%20202412)