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Service campaign S4312 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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService campaign
NHTSA id11012175
Published by NHTSA2025-01-02
Manufacturer's numberS4312 202412
Manufacturer's date2024-12-19
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Certain Volvo VN (4) model trucks may experience accelerated battery drain due to continuous power consumption by the Vehicle Master Control Unit (VMCU) and other modules. Depleted batteries can lead to starting issues and trigger erroneous warning lamps and fault codes across various truck modules.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Vehicles listed
VOLVO VNL (4)2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.