WenmarOpen by Wenmar Pro

Service bulletin 2021110003

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 id10203899
Published by NHTSA2021-12-03
Manufacturer's number2021110003
Manufacturer's date2021-11-12
NHTSA componentELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

Update signal acquisition and actuation module front control unit software

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

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