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Service bulletin LI20 40-P-066124

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 id10158309
Published by NHTSA2019-04-15
Manufacturer's numberLI20 40-P-066124
Manufacturer's date2017-09-25
NHTSA componentENGINE

NHTSA's summary

Engine fan runs continuously or temporarily at the highest level

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

Engine

Vehicles listed
MERCEDES BENZ C2052015 to 2019
MERCEDES BENZ GLC2016
MERCEDES-BENZ GLC2015
MERCEDES-BENZ GLC2017 to 2018

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