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Service bulletin 412

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 id10011747
Published by NHTSA2005-01-31
Manufacturer's number412
Manufacturer's date2004-11-30
Replaces412A
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

COAN HEAD UNIT SOFTWARE UPDATE. (MERCEDS BENZ MODELS 215, 220, 230 YEAR 2005) *JB

The document

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

Vehicles listed
UNKNOWN UNKNOWN

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