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Service bulletin NCU-23P5497108

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 id10243313
Published by NHTSA2023-10-02
Manufacturer's numberNCU-23P5497108
Manufacturer's date2023-09-18
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM

NHTSA's summary

Mercedes-Benz AG (MBAG), the manufacturer of Mercedes-Benz, has determined that on certain MY 2021 S-Class (223 platform) vehicles, the software for the communication module does not correspond to the latest series production configuration. The update is free of charge and will be carried out in the background. The installation will update the communication module in order to be able to perform remote software updates on further control units in the future. Further contributions to product improvement and increases in robustness will also be implemented with this software update. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customers vehicle free of charge without an additional workshop visit via the data link of the communication module. Customer letters were mailed August 11, 2023.

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 S632021
MERCEDES-BENZ S 5002021
MERCEDES-BENZ S 5602021
MERCEDES-BENZ S 5802021
MERCEDES-MAYBACH S 5602021
MERCEDES-MAYBACH S 5802021

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