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Service bulletin LI77.21-P-075806

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 id10231034
Published by NHTSA2023-02-03
Manufacturer's numberLI77.21-P-075806
Manufacturer's date2023-01-20
NHTSA componentSTRUCTURE

NHTSA's summary

Complaint Sliding sunroof panel of panoramic sliding sunroof reversed (temporarily, once, or multiple times) during closing process, without entrapment event. Cause Close tolerance window for the parameters of the automatic reversing function of the panoramic roof in combination with the seal counterpressure. Remedy 1. Open the sliding sunroof panel of the panoramic roof completely (sliding position) and wait 10min (so that the seals can expand/be fully established, if they have been flattened). 2. Standardize panoramic roof with diagnostic system and carry out teach-in run for automatic reversing function.

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

Body and frame

Vehicles listed
MERCEDES-BENZ EQS4502023

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