RoadVitals

2009 Mercedes-Benz ML63 Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
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Latest Mar 3, 2021
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
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Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
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What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2009 Mercedes-Benz ML63, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

  • Brakes133.3%
  • Engine133.3%
  • Powertrain (other)133.3%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Brakes

Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.

1
report

From owner reports, verbatim

LOSS OF ALL BRAKES DIAGNOSE CORRODED/RUSTED BRAKE PIPE AT CENTER LEFT OF VEHICLE

NHTSA ID 11399047 · filed Mar 3, 2021

Too few reports in this category for a page of its own — they appear in the full complaint list.

Engine

Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.

1
report

From owner reports, verbatim

WHILE MY WIFE WAS DRIVING OUR 2009 MERCEDES BENZ ML63, AT APPROX 65 MPH, ON THE 101 LOOP IN SCOTTSDALE AZ, SHE EXPERIENCED COMPLETE ENGINE FAILURE. THE ENGINE COMPLETELY SHUT DOWN ON HER. SHE LUCKILY WAS ABLE TO COAST OVER TWO LANES TO HER RIGHT TO AN EXIT RAMP. THE CAR CAME TO REST AT THE BOTTOM OF THE RAMP W/ NO ENGINE POWER WHATSOEVER. MY WIFE WAS PETRIFIED. THE CAR WAS TOWED FIRST TO AAA AND THEN TO SCHUMACHER EUROPEAN, LTD (A MERCEDES-BENZ DEALERSHIP) IN PHOENIX, AZ. ACCORDING TO SCHUMACHER EUROPEAN, LTD THE CAUSE OF THE ENGINE FAILURE WAS A BLOWN HEAD GASKET DUE TO BROKEN HEAD BOLTS. THE REPAIR ESTIMATE WE RECEIVED FROM SCHUMACHER WAS BETWEEN $6,000 - $25,000 DEPENDING ON THE AMOUNT OF DAMAGE DONE TO THE ENGINE. MERCEDES-BENZ USA HAS HAD A KNOWN ISSUE W/ DEFECTIVE HEAD BOLTS. THEY ISSUED TECHNICAL SERVICE BULLETINS BACK IN 2011 ADDRESSING THE ISSUE. ALSO IN 2011 A CLASS ACTION LAWSUIT WAS BROUGHT AGAINST MERCEDES-BENZ USA CLAIMING THEY WERE AWARE OF FAULTY ENGINE DEFECTS, AND WERE DOING NOTHING ABOUT THEM TO PROTECT CONSUMERS. MY WIFE & I WERE COMPLETELY UNAWARE THAT OUR SUV HAD AN ISSUE W/ DEFECTIVE HEAD BOLTS. AND WHEN THESE DEFECTIVE HEAD BOLTS BREAK, NOT ONLY CAN THEY CAUSE CATASTROPHIC ENGINE DAMAGE BUT THEY CAN CAUSE A MAJOR PUBLIC SAFETY PROBLEM. WE THOUGHT WE OWNED A SAFE CAR. BUT THE TRUTH IS OUR SAFETY, AS WELL AS THE SAFETY OF OUR DAUGHTER (NOW 5 YRS OLD), HAS BEEN IN JEOPARDY SINCE WE STARTED DRIVING THIS SUV. HOW MANY OTHER MERCEDES-BENZ DRIVERS ARE DRIVING AROUND THIS COUNTRY IN CARS & SUV'S THEY THINK ARE SAFE BUT ACTUALLY HAVE DEFECTIVE ENGINES THAT CAN FAIL AT ANY TIME? ALSO TO NOTE: MERCEDES-BENZ USA HAS AN F RATING AT THE BBB.

NHTSA ID 10759272 · filed Aug 25, 2015

Too few reports in this category for a page of its own — they appear in the full complaint list.

Powertrain (other)

Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.

1
report

From owner reports, verbatim

VEHICLE IN MOTION ON FREEWAY, LOST POWER AND SEVERAL CARS RAN OFF THE ROAD TO AVOID MY VEHICLE AS IT SUDDENLY LOST POWER AND SLOWED DOWN WITHOUT WARNING. VEHICLE SAT AND COULD NOT BE DRIVEN FASTER THEN 25 MILES AS IT WAS STUCK IN LIMP MODE (UNABLE TO GET OUT OF FIRST GEAR). A CODE DISPLAYED SHOWING THE TRANSMISSION CONTROL MODULE HAD FAILED. AN INTERNET SEARCH FOUND THOUSANDS OF OTHER PEOPLE HAVE HAD THE SAME PROBLEM AND THE TCM ON MERCEDES ARE KNOWN TO ALL GO FAULTY AFTER WARRANTY HAS EXPIRED. MBENZ IS EXTORTING MONEY OUT OF PEOPLE FOR A PRODUCT THAT CLEARLY NEEDS TO BE RECALLED. THEY QUOTE 6 HOURS TO REMOVE AND REPLACE THIS COMPONANT BUT THE ACTUAL TIME TO REMOVE AND REPLACE IS 1.5 HRS PLUS 1 HOUR FOR REPROGRAMMING THE TCM. THIS IS FRAUDULENT AND UNETHICAL AND THIS COMPANY SHOULD BE DEALT WITH ACCORDING TO THE FAIR TRADE LAWS THAT PROTECT CONSUMERS.

NHTSA ID 11195707 · filed Apr 11, 2019

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .