2009 Mercedes-Benz ML350 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2009 Mercedes-Benz ML350, 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
- Airbags4039.2%
- Seat belts1817.6%
- Electrical1716.7%
- Brakes65.9%
- Exterior lighting54.9%
- Fuel system54.9%
- Body & structure54.9%
- Suspension11.0%
- Driver assistance11.0%
- Interior & seats11.0%
- Other / unspecified11.0%
- Powertrain (other)11.0%
- Steering11.0%
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
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
DEALERSHIP ON NORTHERN BLVD IN QUEENS NY UNABLE TO GIVE ME AN APPOINTMENT TO REPLACE THE BAG. THEY CLAIM THEY ARE YEARS BEHIND REPLACING MY AIR BAG AND THEY CAN'T CONFIRM WHEN THEY WILL GET A REPLACEMENT.
TL* TAKATA RECALL. THE CONTACT OWNS A 2009 MERCEDES-BENZ ML350. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V081000 (AIR BAGS); HOWEVER, THE CONTACT WAS UNABLE TO GET THE RECALL COMPLETED DUE TO THE SRS WARNING INDICATOR BEING ILLUMINATED. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. MERCEDES-BENZ OF ROCKVILLE CENTRE (110 GRAHAM AVE, HEMPSTEAD, NY) WAS CONTACTED AND REFUSED TO PERFORM THE REPAIR WITHOUT CHARGE DUE TO THE SRS WARNING INDICATOR BEING ILLUMINATED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND WAS NOT ABLE TO CONFIRM WHEN THE PARTS WERE TO BECOME AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
THE REAR SEAT BELTS DO NOT RETRACT ONCE PULLED OUT. OVER THE COURSE OF SEVERAL DAYS, THEY SLOWLY WORK THEIR WAY BACK UP. NO VEHICLE SHOULD HAVE A SEATBELT FAIL; IT IS EVEN MORE RIDICULOUS THAT THIS PART FAILED IN A CAR THAT IS THIS EXPENSIVE OR THAT HAS HAD SUCH A LONG HISTORY OF SAFETY. IT ISN'T SAFE FOR ANYONE TO SIT IN THE BACK SEATS BECAUSE THE SEAT BELTS ARE OUT-STRETCHED SO FAR THAT A PERSON WOULD BE THROWN FORWARD A WAYS BEFORE THE SEATBELTS STOPPED THEM. THAT IS DANGEROUS.
BOTH REAR SEAT BELTS WILL NOT RETRACT. THEY ARE FULLY EXTENDED.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
The contact owns a 2009 Mercedes-Benz ML350. The contact stated that while driving 50 MPH on the parkway, the contact heard a noise and several warning lights illuminated. An independent mechanic was contacted. The vehicle was taken to an independent mechanic, where it was diagnosed, and determined that the Signal Acquisition Module (SAM) needed to be replaced. The vehicle was not repaired. The contact associated the failure with NHTSA Campaign Number: 22V678000 (ELECTRICAL SYSTEM); however, the VIN was not included in the recall. The manufacturer was notified of the failure and informed the contact that the VIN was not associated with the recall. The failure mileage was 148,000.
Odometer Fraud. The contact purchased a 2009 Mercedes-Benz ML350. The contact stated that while an independent mechanic was servicing the vehicle, the mechanic informed the contact that there was a mileage discrepancy based on the Carfax history report. The vehicle was a dealer sale. At the time of purchase in October 2024, the vehicle mileage was 146,743; however, the Carfax history report displayed that the mileage was 196,577 on July 15, 2024, while an Auction company was still in possession of the vehicle.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
Subject: Complaint Regarding Failure to Repair Safety Recall – Brake Booster (STOP DRIVE ORDER) Background In August 2022, I received a “STOP DRIVE ORDER” recall notice from Mercedes-Benz, informing me that my ML350 was unsafe to drive due to a defective brake booster. Despite repeated attempts over nearly three years, the recall repair has not been completed. Attempts to Obtain Recall Repair Initial Attempts: Contacted Fletcher Jones Mercedes-Benz (Las Vegas) twice; they refused to schedule service citing workload. Henderson Dealership: Scheduled inspection with Mercedes-Benz of Henderson. Technician inspected my ML350 at my home, confirmed the brake booster issue, and arranged for towing. Improper Repair Demands: After holding my vehicle two weeks, Henderson dealership issued an $8,200 estimate for unrelated repairs (tires, control arms, starter). I refused, as these were unnecessary and unrelated to the recall. The service manager demanded I remove the vehicle from the lot immediately or he would have it towed to impound. Recall Parts Unavailable When I contacted Mercedes-Benz USA, I was told parts for the brake booster recall were not available, contradicting the dealership’s prior statements. My vehicle was returned unrepaired. Vehicle Mishandling •Tow company returned the vehicle at the wrong time, left it on the street with a window down, and failed to return the key. •Despite repeated requests, the key has never been returned. •The ML350 sat exposed for months, registration expired, and I had to hire another tow company to move it to my driveway. Lack of Resolution •Vehicle has been unusable for nearly 3 years. •My written correspondence and calls to Mercedes-Benz USA have gone unanswered or been mishandled (frequent transfers/dropped calls). •I have suffered financial costs, inconvenience, and loss of vehicle value. I respectfully request that 1.Immediate replacement of the defective brake booster at no cost. 2.Retrieval of my original vehicle key o
The contact owns a 2009 Mercedes-Benz ML350. The contact stated that when the vehicle was started, the brake sensor warning light was illuminated. The dealer was contacted; however, the vehicle was not repaired. The contact was concerned that the failure could cause someone to be injured in the event of a failure. The manufacturer was made aware of the failure and the contact was referred to the NHTSA Hotline to report the failure. The failure mileage was approximately 230,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Exterior lighting
Reports naming headlights, tail lights, turn signals and other exterior lighting.
From owner reports, verbatim
THIS COMPLAINT IS BEING MARKED FOR DELETION BECAUSE IT IS AN INADVERTENT DUPLICATE OF ODI# 11425551*DJR The contact owned a 2009 Mercedes-Benz ML 350. The contact stated while at the stop light, the warning message "SRX Malfunction, Service Required" appeared and the battery warning light illuminated. The contact stated as she smelled a burning odor, she veered to the side of the road and exited the vehicle. The contact noticed smoke coming out of the windows of the vehicle. The contact stated fire had started in the trunk of the vehicle and she was able to extinguish it with the assistance of the fire department. There were no injuries sustained. The vehicle was towed to a tow lot, where it was totaled. The dealer was made aware of the failure and informed the contact that the vehicle was not included in the recall for NHTSA Campaign Number: 09V076000 (EXTERIOR LIGHTING). The manufacturer was not made aware of the failure. The approximate failure mileage was 85,000.
The contact owned a 2009 Mercedes-Benz ML350. The contact stated while driving 35 mph, she detected a smoke odor inside the vehicle and pulled over. The contact saw that there was smoke coming from the trunk before the vehicle caught on fire. The SRS and battery warning lights were illuminated. The fire department was able to extinguish the fire. A fire report was not filed. No medical attention was received. The vehicle was towed to a towing lot and deemed totaled by the insurance company. The dealer and another dealer Mercedes-Benz of Bedford (18122 Rockside Rd, Bedford, OH 44146) were made aware of the failure. The contact was informed that the Vin was not under recall. The contact attempted to contact the manufacturer but was unable to speak to a representative. The contact related the failure to NHTSA Campaign Number: 09V076000 (Exterior Lightning). The failure mileage was 85,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
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).
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
These models were recalled on March 9, 2009 NHTSA CAMPAIGN 09v076000. my vin number apparently did not fall within the selected vin numbers. However my auto even though it is the same year as the recall has this same exact defect and condition and is deemed to be a fire hazard. what are my options.
THE AUTOMATIC REAR HATCH CLOSED BUT DID NOT LOCK. DURING ACCELERATION THE REAR HATCH STARTED TO OPEN. ANY FURTHER ATTEMPTS TO LOCK THE HATCH WERE UNSUCCESSFUL AND THE REAR HATCH COULD NOT BE LOCKED. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
LOUD NOISE FROM RIGHT FRONT AS THE VEHICLE WAS DRIVEN ON CITY STREET. JERK WAS FELT INSIDE PASSENGER COMPARTMENT.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
AUTO WAS IN FORWARD AN AT COMPLETE STOP AND DRIVER PLACED IN PARK BUT LEFT ENGINE RUNNING AND EXITED THE CAR. CAR WENT INTO REVERSE AND STARTED TO ACCELERATE. DRIVER WAS KNOCKED TO THE GROUND AND RUN OVER BY CAR. CAR WAS STOPPED WHEN IT RAN INTO BUILDING STRUCTURE. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Interior & seats
Reports naming seats, latches, locks, linkages and interior fittings.
From owner reports, verbatim
TL* THE CONTACT OWNED A 2009 MERCEDES-BENZ ML350. WHILE DRIVING, A BURNING RUBBER ODOR AND SMOKE WERE PRESENT UNDER THE FRONT PASSENGER SEAT. THE DRIVER EXITED THE VEHICLE AND, WITHIN MOMENTS, FLAMES COMPLETELY ENGULFED THE VEHICLE. THE FIRE DEPARTMENT EXTINGUISHED THE FIRE. A POLICE REPORT WAS FILED AND THERE WERE NO INJURIES. THE VEHICLE WAS DESTROYED. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 31,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
SINCE I GOT MY CAR ML 350 2009 HAVE TO MANY PROBLEMS LIKE CHANGING TIRES EVERY 3 MOUNTHS PLUS ALIGNMENT NEVER DONE CORRECTLY , I HAVE CONTACTED FROM SOMEHOW TO CHANGE MY AIRBAGS AND AFTER I COMPLETED ALL INFORMATION BUT THEY NEVER GOT BACK TO ME . PLUS I HAVE SERIES ELCTRICAL ISSUE WITH THE WINDOW ,BACKUP CAMERA,DOOR PANELS AND CROSS CONTROL IS NOT WORKING AT ALL WHEN I USE IT FOR A LONG TRIP OR DRIVE ON THE HIGHWAY SPECIALS WHEN IS THERE FOGG AT THE STREET . AND THE LIGHT I CHANGED IT TO MANY TIME BUT STILL NEVER GOT STRONG ENOUGH TO SEE IN THE FRONT OF ME WHILE I AM DRIVING . I WISHED I NEVER HAVE MERCEDES AND I WILL NEVER DO IT AGAIN.
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.
From owner reports, verbatim
AS I WAS GETTING READY TO SHIFT THE GEAR LEVER TO DRIVE THE LEVER SHEARED OFF AND I WAS UNABLE TO HAVE CONTROL OF SHIFTING THE TRANSMISSION TO ANY OTHER POSITION SUCH AS (P/N/R). I STOP THE CAR AS A SAFETY CONCERN AND LOOKED AT THE BROKEN GEAR SHIFT LEVER AND IT APPEAR TO BE SHEARED OFF THE WEAKEST AREA OF THE LEVER OR WHERE THE SHIFTING LOAD TAKES PLACE. CAR STILL UNDER WARRANTY BUT DEALER REFUSED TO FIX IT UNDER WARRANTY WITH THE EXCUSE EXCESSIVE FORCE APPLIED TO SHIFT WHICH CAUSE THE LEVER TO BRAKE. I AM SURE THE IS A MATERIAL DEFECTS AND FATIGUE. I HAVE THE BAD PART ON HAND AND WHICH IF I CAN SEND IT FOR LAB TEST TO FIND THE CAUSE OF THE DAMAGE AND MAY BE THIS WILL ALERT FOR A RECALL. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
The contact owns a 2009 Mercedes-Benz ML350. The contact stated upon starting the vehicle, the vehicle lost power steering functionality, and the steering wheel locked. The battery warning light was illuminated. The dealer was contacted and informed the contact that the VIN was not included under recall. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 90,000.
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
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .