2015 Mercedes-Benz C300 Steering Problems

Mileage when the problem started

• Under 25k
  640%
• 25k–50k
  320%
• 50k–75k
  320%
• 75k–100k
  17%
• 100k–150k
  213%
• 150k+
  00%

Owner reports

Selected complaints filed with NHTSA by 2015 Mercedes-Benz C300 owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owns a 2015 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, there was an abnormal clunking sound coming from the front suspension of the vehicle. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the steering rack locknuts, observing that the steering rack had become loosened. The vehicle was not repaired. The vehicle was then towed to the dealer, who confirmed the diagnostic result. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 18V850000 (Steering), but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA hotline for assistance. The failure mileage was 70,000.

The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 40 MPH, the vehicle unexpectedly veered to the left. There was no warning light illuminated. The contact stated that the steering wheel became inoperable, and the contact was unable to straighten the steering wheel. The brake pedal was also depressed. The contact attempted to depress the accelerator pedal however, the vehicle started to stall. The contact pulled over into a parking lot and was able to restart the vehicle. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 82,000.

The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 65 MPH, the power steering assist warning light illuminated, and the steering wheel became firm. The contact was able to pull over safely on the side of the road. The vehicle was towed to the dealer and the dealer stated that steering column was experiencing an electric failure, and that the rack and pinon needed to be replaced, and the steering module needed to be reprogramed. The vehicle was not repaired. The manufacturer was contacted, and the manufacturer stated that the VIN was not under any recall. No further assistance was provided. The failure mileage was 100,000.

I was driving my car was sputtering or trying to shut off while I press the gas and I let go of the gas and it catches and stayed on. I took it to the dealership and they said they found nothing wrong. May 3rd around 12pm im driving on the freeway and as im getting on the express lane going 60 it dies and I couldn't move the steering wheel and I slammed into a guardrail. After doing research my car (vin [redacted] ) had multiple recals from the fuel pump and steering wheel and the dealership never fixed or checked any recalls before selling it to me.

The contact owns a 2015 Mercedes-Benz C300. The contact stated that after starting the vehicle, there was an abnormal grinding sound coming from the vehicle. The contact stated that the steering wheel had seized. The contact had the vehicle towed to a certified mechanic and was informed of NHTSA Campaign Number: 18V850000 (Steering) and the contact was referred to the dealer. The dealer was contacted and confirmed that the VIN was not included in the recall. The vehicle had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 40,000.

The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 60 MPH, the power steering malfunction message appeared on the instrument panel. As the contact attempted to exit the highway, excessive force was needed to steer the vehicle. The manufacturer was notified of the failure and the contact was informed that the vehicle was not included in NHTSA Campaign Number: 15V845000 (Steering). The vehicle had yet to be repaired. The failure mileage was approximately 130,000.

Failed component: power steering. Mercedes Benz of Princeton did the replacement, but we're not sure if they kept the part. Safety issue: On June 14, 2022, the vehicle's power steering failed in the middle of a drive (see attachment for the error message). This was a major risk since the car was stuck in the middle of the road, with the steering wheel requiring tremendous force to turn. Luckily, we were a few 100 feet away from home, so we just left it. Next morning the car turns on fine and there are no issues with the steering. One week later, on June 19, 2022, the issue resurfaced. This time we were driving 35mph in a public street with traffic behind us. We were barely able to pull the car over to the side of the road. We took the car to Mercedes Benz of Princeton where they diagnosed the issue and quoted $4551 to replace the entire steering rack. …

Power steering malfunction Car unable to drive I believe there is supposed to be a recall for this issue but not popping up when I put in VIN number Warning lamps come up. Sometimes every light on dashboard. Took it to Mercedes but it was when code was not popping up and they said I needed a new battery. Did that but still an issue. Has also happened when driving. Sometimes collision assist plus light comes on and power steering acts up. Light I am pointing at in picture is another light that consistently pops up I have been able to intermittently fix problem by resetting computer by unplugging battery for 15min or longer. As well as confirming full service on vehicle. Now it isn't working though.

My car is a 2015 Mercedes Benz, I bought it at the agency in 2022. When I tested the vehicle at the agency, I noticed the steering was a little hard. I asked the sales person and he told me it was normal. Then, after 1 year and 5 months, it was on its way. I went to work and the steering wheel jammed and it wouldn't cross and the car turned off then it didn't want to start and it said the following on the dashboard power stering see operator manual

Power steering malfunctioned while driving. Received error on dash. The steering wheel was very difficult to turn. Issue was resolved after turning the car off for 5mins and restarting. However it is unclear whether the issue would fester again. This is the first time this issue occurred between 2017-2022.

Related recalls

Steering complaints in other C300 years