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Service bulletin LI54.18-P-078334

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 id11011764
Published by NHTSA2024-12-11
Manufacturer's numberLI54.18-P-078334
Manufacturer's date2024-12-09
NHTSA componentPOWER TRAIN; ELECTRICAL SYSTEM

NHTSA's summary

Complaint The cable duct of the high-voltage drive line wiring harness is unhooked from the holder and makes contact with the transmission crossbeam. This may cause noises (clattering/vibrating) at the underbody. Cause Due to insufficient holding ability of the catch tab at the underbody cable duct, the cable duct may become unhooked. Remedy Perform a visual check of the cable duct and the attachment point. Apply a high-temperature cable tie (see remedy and parts).

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

Electrical system, Transmission and driveline

Vehicles listed
MERCEDES-BENZ GLC 350 E2018
MERCEDES-BENZ GLC 350 E2020
MERCEDES-BENZ GLC350E2019

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