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Service bulletin LI77.21-P-063617

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 id10136173
Published by NHTSA2018-05-07
Manufacturer's numberLI77.21-P-063617
Manufacturer's date2016-04-12
NHTSA componentVISIBILITY:GLASS, SIDE/REAR; VISIBILITY:SUN/MOON ROOF ASSEMBLY; EQUIPMENT

NHTSA's summary

Panoramic roof: Glass roof jams or cannot be opened, drive unit makes rattling noises

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, Glass, wipers and mirrors, Sunroof

Vehicles listed
MERCEDES-BENZ MERCEDES-BENZ

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