Wiper problems of the 2016 Mercedes Benz C300

While driving my 2016 mercedes-benz C300 on route 12 in utica, NY around 8:10 pm on may 29, 2025, the panoramic sunroof spontaneously exploded while in the tilted vent position. It sounded like a gunshot and sent glass raining into the cabin, causing multiple cuts to my hand, ear, arm, and lower back while I was driving. The shock nearly caused me to lose control of the vehicle. Conditions were clear and dry, around 60°f, and I was driving about 50–55 mph. I have reported the incident to mercedes-benz USA (case #14443457). This is a serious safety hazard, and I am concerned about residual glass in the vehicle’s ventilation system and potential future injuries. I am also concerned about paint and interior damage from the explosion.

The roof fabric headliner getting separated from its foam backing. That created two sagging fabric pockets on both ends near the rear windshield.

The complaint is about the sunroof which has an open recall with all warning signs and risks exactly identical to my make, year and model (2016 Mercedes Benz C300). More than 15,000 vehicles have been affected by this problem and the warning signs suddenly appear with the vehicle. Mercedes benz after their investigation after several reports were filed, later found that the sunroof glass panels were installed without prior application of the primer (bonding agent) which was supposed to ensure the specified strength of the bonded joint. Nhtsa received several complaints concerning this issue where the sunroof suddenly began shaking and rattling which began with the driver noticing excessive wind noises in the area of the sunroof while driving indicating that the panel might be partially separated from the vehicle. I began noticing this on Tuesday may 28th, 2024, when my sunroof tilted open on the left side and failed to open properly. Upon closing it, I began to drive, and the wind noise and excessive rattling was immediately noticeable. It sounded like the wind was forcing open my sunroof and was almost like the wind was about to pull it out. In fear, I slowed down to about 20mph, but it was still very noticeable. I got scared and immediately pulled to the side of the freeway and parked. Then I immediately looked up the issue on google and noticed that there was an open recall for the exact same issue, for my make, model and year. It was noted that the roofs if not fixed will eventually pull out and flyaway posing a safety risk to the driver and other motorists who may crash as they try to avoid the debris or if the panel hits them. Luckily, I pulled over quicky out of fear for it felt like my sunroof was literally about to pull off by the wind. Now I am unable to drive my vehicle because of fear for my safety. Please I would appreciate if this were resolved and for my vehicle to be recalled and fixed immediately as soon as possible. Thanks.

While driving on the highway, I heard a loud noise that, on first impression, led me to believe someone fired a gunshot at and struck my vehicle. Upon looking up, I immediately noticed it was not a gunshot but instead the glass to the front portion of my panoramic sunroof had spontaneously shattered and flew completely off the vehicle. This flying glass flew directly backwards and could have posed a deadly result for the numerous drivers traveling behind me. There were no flying objects or other dangerous instruments that struck the vehicle but the sunroof spontaneously, on its own, shattered and completely detached from the vehicle. Upon subsequent online investigation, I learned this very issue has been experienced by other Mercedes Benz drivers, with the sunroofs spontaneously shattering and flying off. Despite purchasing a extensive warranty at the time of purchase, body work, inclusive of glass replacement, is not covered. Consequently, I was forced to file an auto insurance claim, which required an immediate $500 deductible to be paid to enable the repair company to order the replacement glass. This reoccurring issue most certainly requires a recall for vehicles containing this problematic sunroof. It is not only a danger to the driver of the vehicle, but also to all others traveling on the road.

The panoramic sunroof sliding clips are plastic and break. While going down the road the roof lifted when I attempted to close it. The plastic clips broke that secure the slide rail and glass together.

Sunroof will not open or close, this is a major safety issue! sunroof is currently open. Also, defrost does not work properly during severe weather conditions. When it is raining, my windows will not unfog, this is dangerous and may cause an accident!.

Heard something crack and the found later plastic pieces of the shoe on the right side on the sunroof in the rail of the sunroof. It was the rail guide shoe. The mechanic advised me the entire roof would need to come up, including headliner. He also said you'd need to replace rails, which sounds a bit much for a plastic shoe. I agreed, it's ridiculous that these are made of plastic. 4 thousand dollars to fix it. I been seeing a lot people complaining about the same problem.

Sunroof will not close at all, seats will not adjust (electrical), wiper visibility is unclear, defrost doesn't work properly.

In addition to a strong, noxious, moldy odor, vehicle's front windshield fogs over so totally that it becomes dangerous in highway driving. The hvac/climate-control system's defroster is unable to clear more than the bottom few inches of the windshield: the only way I can see through it is to wipe away the fog with my hand. This happens when the vehicle is in motion but persists when it is stationary. This happens in almost any weather, but especially if there is moisture in the air(fog, rain).

The contact owns a 2016 mercedes-benz C300. The contact stated that there was an extensive glare that impacted the contact's visibility pertaining to the mirrors. The manufacturer was notified of the failure and advised the contact to have a dealer inspect the vehicle. The service center manager at the dealer test drove the vehicle and indicated that there was a high glare causing poor visibility. The dealer and the manufacturer provided no repair solution. The contact was unable to determine if the vehicle would be repaired. The failure mileage was not available.