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Service bulletin SB-2012020001

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 id10048180
Published by NHTSA2012-12-13
Manufacturer's numberSB-2012020001
Manufacturer's date2012-03-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

MERCEDES: ENGINE CONTROL MODULE SOFTWARE, FOR DIESEL ENGINE VEHICLES, FAILS TO MEET CURRENT OBD SPECIFICATIONS AND WILL NEED TO BE UPDATED. MODELS 2012 166, 221. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Engine, Software

Vehicles listed
MERCEDES-BENZ ML3502012
MERCEDES-BENZ S4002012
MERCEDES-BENZ S5502012
MERCEDES-BENZ S632012

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