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NHTSA complaint #11711256

This page summarizes an official U.S. National Highway Traffic Safety Administration owner complaint. Use the verification links below to confirm the record directly with NHTSA.

Vehicle

2020 MERCEDES-BENZ GLC 300

Manufacturer

Mercedes-Benz USA, LLC

Components

EXTERIOR LIGHTING

Dates

Incident: 12/27/2025
Filed: 01/15/2026

Owner complaint summary

Water condensation within the driver side headlight which caused the complete headlight unit, control unit, and module to fail. This is a huge safety issue due to unable to operate vehicle safely during the when it comes to making left turns due to no signal indicator and a safety issue/hazard when driving at night. The issue has been inspected with a local dealer and with corporate being aware of the manufacturer defect. There were no indicators nor warning lamps prior to this issue.

This is an owner complaint filed with NHTSA (ODI #11711256). It is not automatically an official recall, investigation outcome, or manufacturer admission unless the complaint text itself describes one.
NHTSA datasets & APIsAll complaints for this vehicleRaw NHTSA JSON (ODI #11711256)Back to reports

Official record ID (ODI): 11711256. This page is the human-readable source link used across afterwarranty. The raw JSON link proxies NHTSA's public API for machine verification; prefer this page when reading the complaint.