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Service bulletin NCU-2023050002

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 id10237268
Published by NHTSA2023-06-05
Manufacturer's numberNCU-2023050002
Manufacturer's date2023-05-26
NHTSA componentSTRUCTURE

NHTSA's summary

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (“MY”) 2023 GLC (253 platform) vehicles, the seam seal on a small portion of the right A-pillar does not correspond with current production specifications. It cannot be ruled out that a leak may occur due to an inconsistency in this seam seal. What We’re Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will repair the seam seal at the A-pillar.

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 AMG GLC432023
MERCEDES-BENZ AMG GLC63 S2023
MERCEDES-BENZ GLC 3002023

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