2009 Mercedes-Benz ML-Class Fuel System Problems

Fuel tank on driver side of vehicle is leaking. Heavy gas smell inside car and leakage around fuel tank. Took the vehicle in to mechanic today (04/13/23).

ENGINE LIGHT CODE RELATED TO DEFECTIVE HEATER ELEMENT IN BLUETEC FLUID TANK. MERCEDES STATES IT IS AN EMISSIONS SYSTEM BUT IS NOT COVERED UNDER EMISSIONS WARRANTY. NO CHANGE IN VEHICLE PERFORMANCE, 35,000 MILES.

WEEK OF JUNE 27TH, I STARTED TO NOTE GAS FUMES COMING FROM MY VEHICLE. GIVEN, I HAD RECENTLY FILLED UP ON GAS TANK, THOUGHT IT WAS DUE TO "BURN OFF"... ON JULY 2ND, TOOK MY VEHICLE IN FOR OIL CHANGE AND THEY NOTED THAT THEY COULD DETECT GAS FUMES COMING FROM UNDER MY VEHICLE AND ADVISED TO TAKE IT TO DEALERSHIP IN ASAP... SAME DAY, TOOK IT TO DEALERSHIP AND AFTER A FULL INSPECTION OF MY VEHICLE, THEY ADVISED ME THE FUEL SENDING UNIT WAS BRAKING DOWN AND NEEDED TO BE REPLACED. THEY ADVISED THIS WAS SO INCREDIBLY RARE AND SHOULD NOT HAVE OCCURRED. DRIVING MY VEHICLE WAS A HAZARD AND COULD HAVE EXPLODED. GIVEN THIS IS MY MAIN VEHICLE FOR ME AND MY SON, THIS IS VERY CONCERNING TO ME!!! AND NOTHING SHOULD BE BRAKING DOWN AT 70,000 MILES... MY EXTENDED WARRANTY DID NOT COVER IT AND IT COST ME $2000 TO HAVE IT REPAIRED. AGAIN, NO ONE CAN ADVISE HOW THIS OCCURRED BUT NO ONE I HAVE SPOKEN TO CAN GIVE ME A REASON BUT NOTHING SHOULD BE DETERIORATING ON A LUXURY VEHICLE.

TL* THE CONTACT OWNS A 2009 MERCEDES BENZ ML350. AFTER REFUELING THE VEHICLE, FUEL FUMES EMITTED IN AND AROUND THE VEHICLE. THE VEHICLE ALSO STALLED AFTER THE FAILURE. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE FAILURE MILEAGE WAS UNKNOWN.

TL* THE CONTACT OWNS A 2009 MERCEDES-BENZ ML320. AFTER FUELING THE VEHICLE, THE CONTACT NOTICED THAT THE VEHICLE WAS LEAKING FUEL BADLY. THE FIRE DEPARTMENT REMOVED SOME OF THE FUEL BEFORE THE VEHICLE WAS TOWED. THE FAILURE RECURRED FOUR TIMES. THE VEHICLE WAS TOWED TO A DEALER WHERE IT WAS DIAGNOSED THAT THE FUEL SENDER NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 58,000.

VEHICLE WOULD NOT START AFTER BEING PARKED FOR APPROXIMATELY 15 MINUTES. TOWED TO LOCAL MB DEALER, DIAGNOSTICS INDICATED FUEL PUMP FAILURE. FUEL PUMP REPLACED. APPROXIMATE MILEAGE 64000. VEHICLE FAILED TO START ON 4 OTHER OCCASIONS OVER COURSE OF NEXT 8 MONTHS. TWICE THE VEHICLE STARTED THE NEXT DAY. ONCE THE FUEL PUMP RELAY WAS REPLACED. VEHICLE FAILED TO START AGAIN 10/10/14 AND WAS TOWED TO AREA MB DEALER. DIAGNOSTICS INDICATED FUEL PUMP FAILURE AGAIN. FUEL PUMP WAS REPLACED AGAIN! APPROXIMATE MILEAGE 145000. WAITING FOR IT TO LEAVE ME STRANDED AGAIN. *TR

FUEL TANK LEAK. GAS SMELL INSIDE OF VEHICLE WAS SO BAD THAT IT MADE ME SICK. MERCEDES DEALER FIXED IT UNDER WARRANTY: CHANGED THE SEALS ON THE FUEL TANK. *TR

TL* THE CONTACT OWNS A 2009 MERCEDES BENZ ML320. THE CONTACT STATED THAT FUEL BEGAN TO LEAK FROM UNDER THE VEHICLE WHILE REFUELING. THE CONTACT ALSO STATED THAT THE VEHICLE HAD ITS FUEL FILTER REPLACED BY AN AUTHORIZED DEALER PRIOR TO REFUELING. THE VEHICLE WAS TOWED BACK TO THE DEALER AND A FUEL GASKET WAS REPLACED. THE FAILURE RECURRED APPROXIMATELY TWO MONTHS LATER. THE VEHICLE WAS AGAIN TOWED TO THE DEALER TO BE REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 30,000.

FUEL PUMP FAILURE. THE CAR WAS TOWED TO THE DEALER. THIS IS THE SECOND FUEL PUMP FAILURE IN THE LESS THAN ONE YEAR. DURING THE 2 YEARS OF OWNERSHIP, THE CAR HAS HAD SEVERAL PROBLEMS WITH THE ENGINE STARTING, REQUIRING MULTIPLE TRIPS TO THE DEALER FOR SERVICE. ON MANY OCCASIONS THE CAUSE WAS NOT DETERMINED AND THE VEHICLE WAS RETURNED WITH THE PROBLEM UNRESOLVED. THE VEHICLE WAS PURCHASED NEW AND SERVICED BY THE DEALER,

I HAVE A 2009 MERCEDES BENZ ML320 BLUETEC THAT HAS ISSUES WITH STARTING THE ENGINE WHEN WARM. THE CAR WILL CRANK BUT NOT START. *TR

THIS CAR SHOULD QUALIFY AS A LEMON. WE SPENT OVER $65K ON IT NEW IN JANUARY OF 2009 AND IT HAS EASILY COSTS US $65K TO KEEP IT RUNNING SINCE. SOMETHING SIGNIFICANT BREAKS ON IT EVERY 60 DAYS SINCE OWNING IT. THE TURBO WENT OUT MOST RECENTLY AFTER A BAD OIL SEAL LET OIL INTO IT. $6500! THE CAR MAY HAVE SADLY BEEN CURSED SINCE DAY ONE. OUR SALES PERSON AT MERCEDES BENZ OF SF DIED RIGHT AFTER WE BOUGHT IT. THINGS STARTED TO BREAK IMMEDIATELY AFTER. PEOPLE RAN INTO IT, ETC. IT HAS BEEN THE WORST CAR OWNER EXPERIENCE IN MY LIFE. *TR