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Service bulletin NCU-2023070020

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 bulletin
NHTSA id10241532
Published by NHTSA2023-09-01
Manufacturer's numberNCU-2023070020
Manufacturer's date2023-08-21
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM

NHTSA's summary

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2022-2023 EQS (297 platform) vehicles, the software for various control units does not meet current specifications. An extensive optimization update will be implemented on the affected vehicles. Also, a special procedure has already been implemented in Xentry. The software updates will include, but are not limited to, increased system robustness, increased augmented reality camera quality, implementation of the Zync-App for video streaming via the head unit, and implementation of Dolby Atmos for an improved audio experience. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the control units.

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, Software

Vehicles listed
MERCEDES-BENZ AMG EQS2022 to 2023
MERCEDES-BENZ AMG EQS 532022 to 2023
MERCEDES-BENZ EQS 4502022
MERCEDES-BENZ EQS 450+2022 to 2023
MERCEDES-BENZ EQS 5802022 to 2023
MERCEDES-BENZ EQS4502023
MERCEDES-BENZ EQS450+2023
MERCEDES-BENZ EQS5802023
MERCEDES-BENZ redundant EQS 4502023

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