2016 Mercedes-Benz E-Class VISIBILITY/WIPER

Recently (April 2024) we've noticed water drops forming on the inside of the vehicle along the top of the front windshield after a rain. Pushing outward along the top inside of the windshield glass indicates some movement of the glass. This applies all along the top inside of the windshield and not just one spot or area. So far, we have only observed water drops and have not observed any water pooling or puddling yet. We have not yet contacted a dealer; however we have conducted online research that strongly suggests that the windshield urethane adhesive seal is failing. Additional online information suggests that Mercedes had identified windshield urethane adhesive seal batch issues with certain 2016 E350 models. There have been no warning lamps or indicators from the vehicle. We have not observed any vehicle performance issues other than hearing a slight general whistling sound while driving at highway speeds above 55 mph, but that has been unchanged for years so it is likely not related to the windshield seal. The vehicle currently has approximately 30,000 miles on the odometer, and we are the second owners, having purchased it as a certified pre-owned vehicle with about 10,000 miles.

Windshield separation from body of car causing water intrusion and water damage on headliner and electrical components.

My car's windshield at first started to leak. I took the car to the dealer and was informed that leaky windshields are not covered by the warranty. I took no further action as we were still in a COVID restricted environment and the need for the car was low. As my company started to return to the office I have begun using the car more and have now observed that windshield adhesion to the frame has now deteriorated. The car has approximately 41K miles at which I would not expect the windshield to be unglued. I was also recently made aware that there is a similar problem affecting other MB 2020 vehicles, which I do not find to be a coincidence. My car will now require a full windshield replacement and MB is refusing to discuss it.

WINDSHIELD WIPER DOES NOT WORK FASTER ENOUGH AT HIGH SPEED TO ALLOW AUTO TO OPERATE SAFELY AT MODERATE TO HIGH SPEEDS IN RAINSTORM