2015 Mercedes-Benz C300 driver assistance problems

Filed Feb 7, 2025 · Driver assistance · CA

Check engine light came on, it has to be with the Positive Crankcase Ventilation Valve. So I found out that other people are experiencing the same thing. So I know that there is a recall by the manufacturer. And I want to do the same for me.

Filed Aug 10, 2023 · Driver assistance · NH

Blind Spot Assis Inoperative. This message appears on dashboard showing the malfunction of the blind spot sensors. This always happen when the weather temp is hot and also while driving during rain. This concern is putting me, my wife and kids in high risk and unsafe driving condition. I did some research and found out that the manufacture of this car put these electronic sensors inside the rear bumper behind both rear wheels and are exposed so whenever driving, rain, dirt, salt and all road debris splash all over these electronic sensor causing them to corrode and destroyed as a result of water and salt getting inside these fragile electronic sensors and then, the whole blind spot system inoperative and of course high risk to get involved into an accident.

Filed Jul 18, 2023 · Driver assistance, Engine · CA

Engine Crankcase (pcv) Problems on Mercedes Benz C300 and harness issue. I’ve noticed this is a very common issue many owners as myself have experienced and no action for a recall.

Filed Jun 28, 2023 · Driver assistance, Engine · CA

Mercedes 2015 C300 crank case ventilation hose has a defect and it is well-known to the manufacturer. This causes recurring engine and exhaust problems for a large number of car owners, and it should be part of a recall.

Filed Aug 13, 2022 · Driver assistance · AZ

I took my vehicle to the dealership to have recall worked on (top sunroof panel) apparently they refused to work on it because my sunroof is not working. I received a letter after i financed the vehicle stating that there was a recall so to take it in to the dealership and if sunroof needed to be fixed it would. Long story short, back in July the panel detached from my vehicle while i was on the freeway. Thankfully I didn’t cause an accident but I would like some help so the dealership can fix the recall.

Filed Jul 29, 2022 · Driver assistance, Transmission · KS

Reported to local dealer and corporate office about the issues with shift module not shifting at random, meaning that the vehicle won't shift from park to drive or reverse, and so forth. The local dealer tried to reprogram the software, but the problem still persists. When plugging in my OBD II & DTC readers, code U0103 appairs which translates to "Lost communication with gear shift control module". My concern with this is that I've had this issue while in traffic, which would make my vehicle a hazard. When it comes to the collision prevention system, the system randomly turns on and off, meaning that when it's needed it might turn on, but when it's not needed it randomly turns on. Once again, addressed this with a local dealer and Mercedes Benz corporate with no avail. My concerns here is that the vehicle could prematurely brake causing an accident or not brake at all causing an accident.

Filed Mar 27, 2021 · Driver assistance, Steering · TX

The c300 4matic specifically should be recalled because something near the front end squeaks and makes all types of noises

Filed Mar 23, 2021 · Driver assistance, Engine · GA

Check engine light keeps coming on/ fowl order coming from AC unit/ loud gas smell when start ignition in the morning

Filed Feb 21, 2021 · Acceleration, Driver assistance · 91,000 miles · WI

On february 9th, during my morning commute on the interstate the car lost power to the drivetrain. Message that displays was "collision assist plus inoperative" along with cruise control inoperative. With an amber esp light illuminated, there was no engine light on. When this message appeared the car would no longer accelerate (limp mode). In avoidance to being in a rear end collision I quickly pulled over, turned off the car and turned back on. Inoperative message, limp mode and esp light was cleared. I called dealer to notify. My thought was the battery is a dud (was replaced the day prior), the car needs a software reboot due to the new battery or car was not connected to the "memory saver" correctly. Or the sensors were dirty. So I did the easiest. I washed the car. This problem continued to happen 5-6 times more over the next few days stalling on the freeway at 65-75 MPH. Extremely dangerous & life threatening. No engine problems apparent. Seems to be radar or software. This is extremely dangerous while on the highway, I found many other with this same issue on the federal safety agency. I attached a picture of car showing message with no power. My seatbelt was off as I was on side of road trying to get to gas station. This issue is cleared by turning car on / off. Then it happens again hours or a day later, loss of power at highway speeds. Coast over.

Filed Dec 20, 2019 · Driver assistance, Electrical · 86,000 miles · OK

While I was travelling on highway, I got an alert about collision system being inoperable, I took my car to the dealership, it was investigated and was told to me that I had an accident? I did not. I am thinking it was some kind of an electrical/radar sensor issue? It did not affect my speed or ability to accelerate