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The instrument cluster display went dark and has not been able to display any information such as speed in miles per hour, fuel gauge, and other important information needed to maintain safe driving.

MERCEDES-BENZ GLC 300 4MATIC 2025 ELECTRICAL SYSTEM

All of the screens in the car failed to start. They remained black while the car was running. Turning the car off did nothing. Drove to a parking lot, turned the car off, got out, locked the car, waited 5 minutes and it still didn't come back. Had to do a reboot by holding the system power button for 10 seconds. This has occurred 3x in 9,200 miles.

To the Office of Defects Investigation National Highway Traffic Safety Administration  I am submitting this complaint to formally report a serious and recurring safety defect involving the automatic braking and collision detection systems in our Mercedes-Benz GLC.  License Plate: 9RHN710 Dealer Servicing Vehicle: Mercedes-Benz of Stevens Creek (AutoNation), San Jose, California  The vehicle has repeatedly experienced unexpected and unprovoked braking events, including situations where the automatic braking system engages despite there being no vehicles, pedestrians, or visible obstructions present. The issues observed include: â¢ Sudden automatic braking activation without obstruction â¢ Unexpected vehicle deceleration during normal driving conditions â¢ Repeated dashboard alerts indicating âSpeed Severely Restrictedâ â¢ Repeated Attention Assist / âCoffee Breakâ warnings during normal local driving â¢ Sudden brake engagement when parking, accompanied by a loud mechanical noise These events create a dangerous driving condition, as unexpected braking could lead to a rear-end collision from vehicles traveling behind the driver. During one incident, the abrupt braking caused a severe jolt to the driver, resulting in whiplash symptoms that required medical evaluation and MRI imaging, which identified cervical strain.  The vehicle has been brought to the authorized dealership multiple times for inspection and repair attempts. However: â¢ The dealership has not been able to diagnose or repair the issue â¢ Service visits have largely been documented as general inspections â¢ No ADAS (Advanced Driver Assistance Systems) diagnostic or calibration report has been provided, despite the fact that the malfunction appears directly related to radar, camera, or collision prevention systems.  We respectfully request that the Office of Defects Investigation review this complaint and determine whether further investigation into this issue is warranted.

MERCEDES-BENZ GLC 300 4MATIC 2025 LANE DEPARTURE: BLIND SPOT DETECTION

The component that repeatedly fails is the vehicleâs electronic display/infotainment system (dual digital screens/MBUX system) and potentially related electrical components in my 2025 Mercedes-Benz GLC 300 4MATIC. The system has malfunctioned six (6) separate times since I purchased the vehicle new in May 2025. When the malfunction occurs, both display screens suddenly go completely black and become inoperable while the vehicle is running. During these failures, the vehicle also produces a repetitive clicking sound from the dashboard area while the screens are off. The most serious incident occurred on February 17, 2026, when the screens shut down while I was driving and I detected a burning electrical smell inside the vehicle. This raised significant concerns about a possible electrical malfunction or fire risk. The digital display system provides critical driving information, including vehicle settings, safety alerts, and operational controls. When the screens shut down, the driver loses access to important vehicle information and control functions, which creates a potential safety hazard while operating the vehicle. This issue has been reproduced multiple times and the vehicle has been taken to Mercedes-Benz of Jackson, Mississippi for inspection and repair attempts on several occasions. The dealership has attempted repairs and indicated that they have opened a case with the Mercedes-Benz manufacturing department regarding the recurring electrical issue. Due to the repeated electrical failures, clicking sounds from the dashboard area, and the burning electrical odor detected while the vehicle was in operation, I am concerned that this issue may indicate a serious electrical defect that could potentially lead to overheating or fire. The malfunction occurs while the vehicle is being driven, which places the driver and passengers at risk. Because the display system repeatedly shuts down and the issue has occurred multiple times despite dealer inspections and repair

2025 Mercedes-Benz GLC300 4matic — vehicle data sourced from FuelEconomy.gov.

De Mercedes-Benz GLC300 4matic (2025) is een gecertificeerde hybride SUV met een krachtige 2.0L turbomotor die 255 pk levert. Geniet van efficiëntie met een gecombineerd brandstofverbruik van 26 MPG en een indrukwekkende acceleratie van 0 naar 60 mph in slechts 6,1 seconden.

	2016	2017	2018	2019	2020	2021	2025
Prijs	—	—	—	—	—	—	—
Cilinderinhoud	2L	2L	2L	2L	2L	2L	1999 cc
Brandstoftype	Super	Super benzine	Super	Super benzine	Super benzine	Super	Premium Gasoline
Transmissie	Automaat 9 versnellingen	Automaat 9 versnellingen	Automaat 9 versnellingen	Automaat 9 versnellingen	Automaat 9 versnellingen	Automaat 9 versnellingen	9-speed automatic
Carrosserietype	Kleine SUV 4WD	Kleine SUV 4WD	Kleine SUV 4WD	Kleine SUV 4WD	Kleine SUV 4WD	Kleine SUV 4WD	SUV

Mercedes-Benz GLC300 4matic (2025) Specificaties