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2009 Mercedes-Benz ML350 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.
93
Latest Mar 24, 2026
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
13
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.
7

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.

40
reports

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.

NHTSA ID 11155872 · filed Dec 4, 2018

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.

NHTSA ID 11124694 · filed Sep 6, 2018
All 40 reports naming airbags

Seat belts

Reports naming seat belts, buckles, retractors and pretensioners.

18
reports

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.

NHTSA ID 11404801 · filed Mar 25, 2021

BOTH REAR SEAT BELTS WILL NOT RETRACT. THEY ARE FULLY EXTENDED.

NHTSA ID 11204361 · filed Apr 29, 2019
All 18 reports naming seat belts

Electrical

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.

17
reports

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.

NHTSA ID 11726683 · filed Mar 24, 2026

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.

NHTSA ID 11680606 · filed Aug 14, 2025
All 17 reports naming electrical

Brakes

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

6
reports

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

NHTSA ID 11688683 · filed Sep 21, 2025

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.

NHTSA ID 11596276 · filed Jun 24, 2024

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.

5
reports

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.

NHTSA ID 11425563 · filed Jul 19, 2021

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.

NHTSA ID 11425551 · filed Jul 19, 2021

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.

5
reports

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).

NHTSA ID 11516886 · filed Apr 13, 2023

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.

NHTSA ID 10733001 · filed Jul 9, 2015

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.

5
reports

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.

NHTSA ID 11654619 · filed Apr 14, 2025

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

NHTSA ID 10643659 · filed Oct 9, 2014

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.

1
report

From owner reports, verbatim

LOUD NOISE FROM RIGHT FRONT AS THE VEHICLE WAS DRIVEN ON CITY STREET. JERK WAS FELT INSIDE PASSENGER COMPARTMENT.

NHTSA ID 10864761 · filed May 13, 2016

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.

1
report

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

NHTSA ID 10676860 · filed Jan 21, 2015

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.

1
report

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.

NHTSA ID 10937267 · filed Dec 23, 2016

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.

1
report

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.

NHTSA ID 11047244 · filed Nov 18, 2017

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

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

NHTSA ID 10578492 · filed Apr 9, 2014

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.

1
report

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.

NHTSA ID 11686279 · filed Sep 10, 2025

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 .