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Service bulletin NCU-2019080019

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 id10178745
Published by NHTSA2020-08-24
Manufacturer's numberNCU-2019080019
Manufacturer's date2020-07-10
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; STEERING:GEAR BOX (OTHER THAN RACK AND PINION); STEERING

NHTSA's summary

The aluminum bolts of the steering gear housing cover and the aluminum bolts on the powerpack may corrode in corrosion-critical countries where exposed combination with particularly aggressive thawing agents (saltwater mixtures) in certain vehicles of the model series 166, 292, W/X 204, 212, 213, 205, 253, 218, 222, 217, 207. This fault pr expected in countries that do not use these thawing agents. In the case of advanced corrosion, the bolt strength may be impaired. Over time and with ongoing corrosion in combination with associated with driving, it cannot be excluded that a corroded bolt may break in individual cases. If all 3 mounting bolts of the powerpack were to break over time, this could detach from the The power steering would as a result fail.

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

Equipment and accessories, Steering, Steering gear

Vehicles listed
MERCEDES BENZ E2012
MERCEDES-BENZ AMG ML632012
MERCEDES-BENZ CLS2012
MERCEDES-BENZ CLS5502012
MERCEDES-BENZ CLS632012
MERCEDES-BENZ E3502012
MERCEDES-BENZ E5502012
MERCEDES-BENZ E632012
MERCEDES-BENZ ML3502012
MERCEDES-BENZ ML5002012
MERCEDES-BENZ ML5502012

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