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Service bulletin SC-2018020012

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 id10166720
Published by NHTSA2019-10-28
Manufacturer's numberSC-2018020012
Manufacturer's date2019-09-11
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; STEERING:ELECTRIC POWER ASSIST SYSTEM

NHTSA's summary

Update electric power steering 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, Steering, Power steering, Software

Vehicles listed
MERCEDES BENZ S2172018
MERCEDES BENZ S2222018

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