2012 MERCEDES-BENZ CLS550 Engine Problems
4 NHTSA complaints on file
Engine Issues in the 2012 MERCEDES-BENZ CLS550
4 engine complaints have been filed with NHTSA for the 2012 MERCEDES-BENZ CLS550. Of these, 0 involved a crash, 0 involved a fire, and 0 resulted in injury.
4
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
All Engine Complaints
CAM LINK SENSOR LEAKS OIL ONTO ENGINE HARNESS, FRYING ALL ELECTRIC COMPONENTS, CAUSING VEHICLE TO STUTTER WHILE OPERATING
ENGINE STARTED MISFIRING AND WOULD GO INTO LIMP MODE SO I BROUGHT IT TO DEALERSHIP FOR DIAGNOSTIC AND WAS TOLD OIL WAS LEAKING FROM THE CAMSHAFT SENSORS INTO THE ENGINE WIRING HARNESS AND ECU. ALL OF WHICH NEEDED TO BE REPLACED AT A COST OF OVER $6033.00 AND THE CAR HAS ONLY AROUND 50K MILES ON IT. SEVERAL PREVIOUS YEAR MERCEDES FROM 2011 AND EARLIER HAVE A RECALL ON THE CAMSHAFT SENSORS DUE TO OIL LEAKING FROM THEM INTO ENGINE WIRING HARNESS AND ECU HOWEVER MY YEAR CAR WHICH IS 2012 HAS NO RECALL ON THESE PARTS EVEN THOUGH THEY USE THE EXACT SAME CAMSHAFT SENSORS AND HAVE THE SAME PROBLEM AS THE PREVIOUS YEARS WHICH IS OIL LEAKING FROM THEM AND DESTROYING EXPENSIVE PARTS THAT NEED TO BE REPLACED. *TR
WHEN STARTED AND FOR SOME PERIOD AFTER WARM UP THE ENGINE FUEL INJECTORS RATTLE. THE DEALER MECHANIC CLAIMS THAT THIS IS THE RESULT OF THE SPLIT RAIL SYSTEM INSTALLED ON THE ENGINE. THIS MAKES THE MOTOR APPEAR TO BE KNOCKING AS THE NOISE IS LOUD. I HAVE REPORTED IT SEVERAL TIMES SINCE 2017.
DRIVING ON THE HIGHWAY WITH MY 6MONTH OLD BABY AND SUDDENLY MY CAR SURGES AND LOSES POWER. THE CHECK ENGINE LIGHT FLASHES AND I MOVE TO THE SIDE OF THE ROAD WITH ALMOST NO ACCELERATION. TURN OFF THE ENGINE, WAIT A WHILE THEN TURN IT BACK ON AND HEAD BACK HOME. THE CEL STAYED ON BUT I STILL HAD ENGINE POWER SO I THOUGHT IT WAS A FLUKE. THIS CAR JUST HAS 60K MILES ON IT AND I TAKE IT TO MERCEDES FOR ALL THE ROUTINE CHECKS. SO THIS BEHAVIOUR WAS OUT OF NOWHERE. I DROVE IT TO MERCEDES AND GOT A DIAGNOSTIC DONE AND I WAS TOLD THE CAMSHAFT POSITION SENSOR HAD LEAKED OIL INTO MY ENGINE HARNESS AND NOW I NEED TO FIX A LAUNDRY LIST OF THINGS AMOUNTING TO $6000. THIS CAME OUT OF NOWHERE AND I QUESTIONED EUROMOTORCARS IN GERMANTOWN MD HOW THIS COULD HAPPEN. HOW...