# Service campaign NCU \- 2021110012

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 campaign
- NHTSA id: 11012129
- Published by NHTSA: 2025\-01\-02
- Manufacturer's number: NCU \- 2021110012
- Manufacturer's date: 2024\-12\-20
- NHTSA component: ELECTRICAL SYSTEM; ENGINE

## NHTSA's summary

Mercedes\-Benz AG, the manufacturer of Mercedes\-Benz vehicles, has determined that on certain MY 2021 G\-Class \(463 platform\) vehicles, the engine control unit software for camshaft adjustment does not meet the current series production specifications. An authorized Mercedes\-Benz dealer will update the engine control unit software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012129-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012129-9999.pdf)

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

## Components

Electrical system, Engine

## Vehicles listed

- 2021 MERCEDES\-BENZ AMG G63
- 2021 MERCEDES\-BENZ G 550

JSON: [/v1/bulletins/11012129](/v1/bulletins/11012129)

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