2014 Mercedes-Benz C-Class Speed Control & Cruise Problems

I was trying to merge onto a freeway from a complete stop and because this freeway has an extremely short on-ramp, you need to get up to a high speed in very little time. As such, I put my car in Sport driving mode and accelerated very hard from a complete stop. The car accelerated as normal for a few seconds (I reached approximately 40 to 50 MPH), then I felt the car lag and felt a loss of power. The car was in limp mode and I couldn’t accelerate even though I was pressing the gas pedal all the way to the floor. A few seconds after this occurred, I notice that the check engine light turned on. I was able to maintain a speed around 50 MPH and got off the freeway. I took my car to both the Mercedes dealership and an independent mechanic and both diagnosed a failure of the high pressure fuel pump. I also tried to see if this will happen again and after hard acceleration in regular driving mode, the exact same issues occurred. I have read that there are issues with the high pressure fuel pump with my car model and I ask that you guys please investigate thoroughly to see if a recall would be necessary. Losing power while accelerating is extremely dangerous and a huge safety hazard for all drivers on the road. I could have easily been rear ended by another driver since I couldn’t accelerate to a faster speed. I have not yet replaced the high pressure fuel pump but plan to do so in the next few days. Attached is the diagnostic invoice from the Mercedes dealership. As stated on the invoice, please note that my car only has 43,000 miles, which makes the high pressure fuel pump failure very surprising.

SUDDEN LOSS OF POWER WHILE TRYING TO ACCELERATE,ENGINE LIGHT COMES ON AND CAR GOES INTO LIMP MODE. CODE P002. CAR HAS 44450 MILES.

TL* THE CONTACT OWNED A 2014 MERCEDES-BENZ C350. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 15-30 MPH, THE VEHICLE INDEPENDENTLY ACCELERATED. THE CONTACT STATED THAT HE WAS UNAWARE OF HOW HIS FOOT ENDED UP UNDER THE ACCELERATOR PEDAL. THE VEHICLE WAS THEN INVOLVED IN A FOUR VEHICLE COLLISION. THE CONTACT STATED THAT ALONG WITH HIS WIFE WHO WAS IN THE CAR AT THE TIME, SHE WAS INJURED ALONG WITH ONE OTHER OCCUPANT OF ONE OF THE OTHER VEHICLES. IT WAS UNKNOWN WHERE THE WIFE WAS SEATED. MEDICAL ATTENTION WAS SOUGHT SEVERAL DAYS AFTER THE COLLISION BY THE CONTACT AND HIS SPOUSE. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO A TOWING LOT. AAA WAS ABLE TO RETRIEVE DATA FROM THE VEHICLE DATA RECORDER. THE CONTACT WAS INFORMED THAT A COMPREHENSIVE REPORT COULD BE ATTAINED BY EQUIPMENT THAT ONLY THE DEALER OR MANUFACTURER POSSESSED. THE VEHICLE WAS NOT REPAIRED. THERE WAS NO DIAGNOSTIC CHECK OR INSPECTION PERFORMED ON THE VEHICLE. A DEALER WAS NOT CONTACTED. THE VEHICLE WAS DESTROYED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 34,366. *JS

2014 MERCEDES BENZ C350. CONSUMER WRITES IN REGARDS TO DEFECTIVE ACCELERATION SYSTEM. *LD THE CONSUMER STATED THE CRUISE CONTROL MALFUNCTIONED CAUSING A 4 CAR COLLISION. THE CONSUMER STATED THE INFORMATION IN THE POLICE REPORT WAS FALSE AND THAT THE CRASH WAS INADEQUATELY INVESTIGATED. *JS

WHILE SLOWING TO APPROACH A PARKING SPACE, THE CAR SPED FORWARD AND JUMP THE CURVE CRASHING INTO A STOREFRONT. NO ONE INJURED. STEPPING ON THE BRAKES DID NOT STOP OR EVEN SLOW DOWN THE CAR.

TL* THE CONTACT OWNS A 2014 MERCEDES BENZ C300. WHEN THE IGNITION WAS TURNED TO THE ON POSITION AND THE VEHICLE WAS SHIFTED INTO DRIVE WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE ACCELERATED WITHOUT WARNING. THE VEHICLE CRASHED INTO A TRAFFIC LIGHT POLE. THE CONTACT SUFFERED LACERATIONS TO THE HEAD, MUSCLE DAMAGE TO THE LEGS, AND A FRACTURE ON THE EYE SOCKET. THE CONTACT RECEIVED MEDICAL ATTENTION. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO THE CONTACT'S INSURANCE COMPANY. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 11,000.