2015 MERCEDES-BENZ C300 Complaints

TL* THE CONTACT OWNS A 2015 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING AT 55 MPH, THE GLASS IN THE SUNROOF COLLAPSED WITHOUT IMPACT. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE SUNROOF WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 21,000.

I HEARD A VERY BIG DEVASTATING NOISE WHILE DRIVING MY 2015 MERCEDES BENZ-C300 ON A LOCAL ROAD IN RALEIGH, NC AT ABOUT 40 MPH. SINCE I DID NOT SEE ANY TPMS (TIRE PRESSURE MONITORING SYSTEM) OR ANY OTHER KIND OF ALERT ON THE SCREEN, I CONTINUED TO DRIVE. AFTER DRIVING ABOUT 2 MORE MILES, I HEARD ANOTHER BIG POP AND THE CAR BECAME NON-DRIVABLE BY THEN. I DID NOT FEEL HITTING ANY OBJECT OR GOING THRU A POT HOLE. THAT'S WHEN I GOT DOWN THE CAR AND NOTICED THE RIGHT FRONT TIRE OUTER WALL GOT SEPARATED FROM THE TIRE AND THE THE TIRE WAS JUST FLAT TO THE GROUND. I COULD NOT, OF COURSE, DRIVE FURTHER. THIS HAPPENED ON SATURDAY (10/1/16) EVENING AND IT IS A RUN-FLAT TIRE, BUT COULD NOT DRIVE FURTHER AND THERE WAS NO SPARE IN THE CAR. SO, I HAD TO WAIT UNTIL TODAY (10/3/16) TO GET IT TOWED TO THE NEAREST BENZ DEALER IN RALEIGH TO GET THE TIRE REPLACED. IT WAS A VERY FRUSTRATING HALF A DAY ATTENDING TO THIS REPAIR. THERE ARE A COUPLE OF ISSUES HERE. (A) QUALITY ISSUE: WHY THE CONTINENTAL TIRE TIRE GAVE AWAY SO QUICKLY WITH ONLY ABOUT 23.5K MILES ON THE ODOMETER, WITHOUT HITTING ANY OBJECT? (B) SAFETY ISSUE: THIS WOULD HAVE BEEN A DISASTER IF I WERE ON A ROAD TRIP WITH FAMILY ON A NATIONAL HIGHWAY, ESPECIALLY, ON A SATURDAY EVENING WITHOUT A SPARE TIRE. (C). SYSTEM RESPONSE ISSUE: WHY MB SYSTEM DID NOT GIVE ANY KIND OF ALERT IN SPITE THIS MAJOR BLOW-OUT? I WOULD HESITATE TO BUY ANOTHER CAR WITHOUT A SPARE TIRE. I HOPE THE NHTSA WILL CONSIDER SERIOUSLY DISCOURAGING RUN-FLAT TIRES IN THE CARS UNLESS A SPARE TIRE IS PROVIDED, UNTIL SUCH TIME THE RUN-FLATS ARE EXTREMELY SAFE AND STURDY. THANKS.

COLLUSION PREVENTION SYSTEM INOPERATIVE. CAUSES CAR TO SLOW SLOW DOWN AND OR STOP WHILE ON THE ROAD. POSES A SEVERE LIFE THREATENING DRIVING CONDITION FOR ME AND OTHER DRIVERS. MANY OTHER MERCEDES BENZ OWNERS ACROSS THE USA, CANADA, AND JAPAN ARE COMPLAINING OF THE SAME ERROR MESSAGE AND ISSUES. MY MBUSA ADVISOR STATED HER VEHICLE IS DOING THE SAME THING. MY SERVICE ADVISOR AT THE DEALERSHIP STATED ITS MICE THAT ARE EATING THE WIRES. I AM TAKING MY VEHICLE TO TWO OTHER MECHANICS FOR OPINIONS ON THE CAUSE OF THE ERROR MESSAGE. I HAVE DOCUMENTS FROM OTHER MERCEDES BENZ OWNERS WHO HAVE COMPLAINED OF THE SAME ISSUE AND ERROR MESSAGE.

THE MANDATORY REQUIRED TIRE PRESSURE MOTORING SYSTEM (BECAUSE IT HAS RUN FLAT TIRES) ON ONE OF THE WHEELS FAILED AND THEY CLAIMED THIS IS NOT COVERED BY EITHER THE MANUFACTURER'S WARRANTY OR THE TIRE PROTECTION WARRANTEE. I WAS TOLD THIS ON 6/15 2015 BUT THE ORIGINAL COMPLAINT I MADE ABOUT AIR PRESSURE INT HE LEFT REAR TIRE WAS WELL WITHIN THE WARRANTEE PERIOD.

MULTIPLE INCIDENTS OF 'COLLISION PREVENTION ASSIST PLUS INOPERATIVE'. CAR LOSES ALL POWER UNTIL RESTARTED. THIS HAPPENED SEVERAL TIMES, ONCE ON AN INTERSTATE AT 65 MPH CREATING A DANGEROUS SITUATION. I HAD TO PULL OVER SEVERAL LANES ON THE INTERSTATE WITH NO POWER WHILE OTHER CARS HAD TO AVOID ME. I BROUGHT THE CAR INTO THE DEALER AND AFTER A WEEK OF REPAIRS, THE SAME FAULT HAS OCCURRED TWICE IN THE FIRST 24 HOURS AFTER RETURN OF VEHICLE. FAULT OCCURRED AT 60 MPH DURING A PASSING MANEUVER ON A 2 LANE ROAD. AGAIN, WE WERE PUT IN A VERY DANGEROUS SITUATION. THIS IS AN UNSAFE VEHICLE. ATTACHED IS A PICTURE OF THE DASHBOARD FAULT THAT I PHOTOGRAPHED AFTER THE CAR COASTED TO THE SIDE OF THE ROAD. THE CAR WOULD NOT MOVE UNTIL I TURNED IT OFF AND RESTARTED.

WAS DRIVING ON CITY STREET, AND THE COLLISION PREVENTION ASSIST DISABLED WARNING SIGN CAME ON AND I LOST POWER TO THE CAR. I'M TOLD THIS IS CALLED "LIMP MODE." I TRIED TO PICK UP SPEED BY PRESSING THROTTLE TO THE FLOOR, BUT GOT NO REACTION AT ALL. THEN SOME POWER CAME BACK, BUT NOT MUCH. EACH TIME I BRAKED TO STOP FOR LIGHT OR TURN THIS WOULD HAPPEN. AFTER I GOT HOME I RESTARTED THE ENGINE AND IT SEEMED NORMAL AGAIN. HOWEVER I WAS AFRAID TO DRIVE IT, ESPECIALLY SINCE IN THE LAST SIX MONTHS MY POWER STEERING ALSO FAILED, AND HAD IT TOWED TO DEALER. THEY RAN TESTS AND NO CODE FOR FAILURE WAS FOUND. THEY SAID THEY FOUND SOME SOFTWARE UPDATES WHICH THEY DID. UNFORTUNATELY, AFTER I PICKED UP THE CAR FROM SERVICE I SAW THAT MY MAIN COMPLAINT WASN'T EVEN MENTIONED. ONLY THAT I SOMETIMES HAD PROBLEM WITH COLLISION CONTROL WARNING GOING OFF FOR NO APPARENT REASON.

WHILE DRIVING "COLLISION PREVENTION ASSIST PLUS INOPERATIVE" MESSAGE APPEARS ON DASHBOARD. CAR LOSES ITS ABILITY TO ACCELERATE. OCCURRED TWICE (JANUARY 2015) ON CITY STREETS FORCING ME TO PULL OVER TO THE SIDE OF THE ROAD AND RESTART MY CAR, THE ERROR DISAPPEARS AND I AM ABLE TO DRIVE NORMALLY. 4/7/16 OCCURRED WHILE TRAVELING 65MPH ON AN INTERSTATE. I LOST ABILITY TO ACCELERATE AND WAS ALMOST REAR-ENDED BY A SEMI-TRUCK. THE VEHICLE WAS SERVICED AT A MERCEDES DEALERSHIP ON 1/11/16 THE HIGHWAY INCIDENT OCCURRED AFTER THE "FIX". IT IS CURRENTLY BACK AT THE DEALERSHIP BEING TESTED BY THE SERVICE DEPARTMENT. I AM TOLD THE CURRENT FIX IS TO REPLACE ALL THE SENORS. I HAVE OPENED A CASE WITH MBUSA TO REPURCHASE THE VEHICLE GIVEN THE INITIAL REPAIR DID NOT WORK AND PUT ME IN PERILOUS HIGHWAY SITUATION. I PURCHASED THE VEHICLE IN OCTOBER OF 2015.

TL* THE CONTACT OWNS A 2015 MERCEDES-BENZ C300. WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE WOULD INDEPENDENTLY DECELERATE WITH THE RPM GAUGE READING BETWEEN 4,000-5,000. THE FAILURE OCCURRED INTERMITTENTLY. WHEN THE VEHICLE WAS SHUT OFF AND RESTARTED, THE VEHICLE RETURNED TO NORMAL. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING; HOWEVER, THE FAILURE COULD NOT BE DUPLICATED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 1,000.

TWO ISSUES, PURCHASED A CERTIFIED PRE OWNED VEHICLE. AT 8900 MILES, WE NOTICED THE CAR WAS IDLING VERY ROUGH ON A COLD START, ALMOST THE SOUND OF A DIESEL. THE SOUND WOULD RESOLVE AFTER 10 MINUTES OF DRIVING. SERVICE INFORMED US THAT THERE WAS A RECALL ON THE RODS AND PISTONS. WE HAD THE ENGINE REBUILT, AND THE NOISE IS THE SAME, IF NOT WORSE. THE CAR SOUNDS NOTHING LIKE LATERBUILD '15 MODELS OR '16 MODELS, NOR DOES IT RUN AS SMOOTHLY. SECONDLY, 5 OCCURRENCES INVOLVED INOPERATIVE COLLISION PREVENTION ASSIST WARNINGS AND INOPERATIVE ANTI-SKID WARNINGS APPEARING ON THE DASH CAUSING THE CAR TO REDUCE OPERATING SPEED TO 20MPH MAX. CAR NEEDED TO BE SHUT OFF AND RESTARTED AFTER A 5 MINUTE PERIOD EACH TIME THESE WARNINGS APPEARED, IN ORDER TO DRIVE OVER 20MPH. THE VEHICLE WAS SERVICED FOR THESE WARNINGS TWICE. THE FIRST SERVICE DIAGNOSED THE CAR WITH A CODING ISSUE. THE SECOND, INVOLVED REPLACING MODULES. THIS ALL OCCURRED DURING THE TWO MONTHS OF OWNING THE CAR. WE NOTICES SEVERAL SIMILAR COMPLAINTS REGARDING THE EARLY BUILD 2015 C300S, AND DECIDED TO CUT OUR LOSSES AND PURCHASE ANOTHER VEHICLE. WE DID NOT FEEL SAFE IN THAT CAR.

COLLISION PREVENTION ASSISTANCE FEATURE WENT ON AUTOMATICALLY ( AS WELL AS CHECK-ENGINE LIGHT) WHILE DRIVING AT HIGHWAY SPEED IN NORMAL WEATHER. I WAS NOT IN AN ACCIDENT, NEAR ANOTHER VEHICLE AND COMPLETELY AWARE AND DRIVING NORMALLY PRIOR TO THIS OCCURRING. I HAD TO STRUGGLE WITH CAR TO PULL OVER TO SHOULDER, LOSS POWER FROM GAS PEDAL, CAR HARD TO CONTROL. I HAD TO TURN OFF THE CAR, DEACTIVATE THE FUNCTION TO DRIVE. IT HAPPENED AGAIN WHEN I DROVE THE CAR LATER THAT DAY AFTER THE CAR HAD BEEN PARKED FOR A WHILE. TOOK IT INTO SERVICE. THEY WERE ABLE TO FIND THE ERROR CODE.THEY FOUND THAT MERCEDES SENT OUT A MEMO IN SEPT. 2015 STATING THEY ARE AWARE OF THE PROBLEM BUT SERVICE IS NOT TO DO ANYTHING TO "FIX" IT! I HAVE ONLY OWNED THIS CAR FOR 6 WEEKS ,BOUGHT IT NEW AND HAVE LESS THAN 6,000 MILES ON IT. MERCEDES IS NOT OFFERING A SOLUTION BUT MORE OF A WAIT AND SEE ATTITUDE.