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2009 Mercedes Benz ML350 electrical problems

17 complaints (18% of all complaints for this car). Typical mileage when it fails: 104,284.

owner complaints
17
of this car's complaints
18%
typical mileage
104,284
crashes
0
recalls
0

Which part fails

  • Instrument panel: speedometer/odometer
    1

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Mercedes Benz ML350 electrical problems in other years

200320042006200720082009

Specific symptoms reported on the 2009 Mercedes Benz ML350 electrical

Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.

Fire or smoke 5

Related recalls

No recalls on record for this model year.

What 2009 Mercedes Benz ML350 owners say

Most recent owner complaints, unedited.

Filed Mar 24, 2026 · Electrical · 148,000 miles · NY

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 the federal safety agency 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.

Filed Aug 14, 2025 · Electrical · 196,577 miles · GA

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.

Filed Jun 23, 2025 · Electrical · 140,000 miles · MS · fire · 1 injury

The contact owns a 2009 Mercedes-Benz ML350. The contact stated that while driving at 45 MPH in heavy rain, she observed smoke emanating from the rear of the vehicle. The contact stated that there may have been unknown warning lights illuminated. The vehicle was steered to the side of the road and turned off. The contact stated that when the vehicle was restarted, multiple unknown warning lights illuminated. The contact also stated that the key pad stopped working, and multiple electrical components stopped working, and that she experienced sinus issues thereafter. The vehicle was taken to a dealer where it was diagnosed that the SAM module got wet and there was an electrical fire because the wires were not covered and the SAM module needed to be replaced. The vehicle was not repaired. The vehicle was then taken to an independent mechanic, where it was not diagnosed, but the SAM module was replaced. The failure persisted. The vehicle was then towed to another independent mechanic, where it has yet to be diagnosed. The manufacturer was notified of the failure. The failure mileage was 140,000.

Filed Apr 14, 2025 · Body, Electrical · IA

These models were recalled on March 9, 2009 the federal safety agency 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.

Filed Dec 30, 2022 · Electrical · 140,000 miles · AR · fire

The contact owned a 2009 Mercedes-Benz ML350. The contact stated while driving 45-50 MPH with his wife in the front passenger seat and his children in the rear seats, his wife smelled a strong burning odor and saw smoke coming from underneath the front passenger seat. There was no warning light illuminated. The contact immediately veered to the side of the road. Both the contact and his family exited the vehicle and ran away from the vehicle. The contact stated that approximately 30 seconds after exiting the vehicle, the vehicle caught on fire and exploded several times, causing a nearby tree to catch on fire. The contact was able to extinguish the fire with the assistance of the fire department. A fire department report was filed. A police report was filed. There were no injuries sustained. The vehicle was towed to a tow yard where it was awaiting to be totaled. The dealer was notified of the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 140,000.

Filed Sep 7, 2022 · Electrical · CO

Driver side front door and driver side back door do not unlock or lock. You have to Manually unlock and lock.

Filed Feb 14, 2022 · Electrical · 104,284 miles · FL

The contact owns a 2009 Mercedes Benz ML350. The contact stated that while attempting to open the door with the key fob, the fob failed to open the vehicle. In addition, the contact noticed that the headlights failed and the gas gauge also failed to operate as needed. The vehicle was taken to an independent mechanic where it was diagnosed that the rear Signal Acquisition Module (SAM) board was corroded, and the rear SAM module needed to be replaced. The dealer was not contacted. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 104,284.

Filed Jul 15, 2019 · Electrical · 116,500 miles · WA

Failing/faulty eis electronic ignition system. My vehicle has 117,000 miles and has intermittent ignition issues. I place the key in the ignition a message on the dash, "key does not belong to vehicle", car will not turn to start, takes several attempts to have car start. The mercedes dealer in my area diagnosed the issues as needing to replace eis, electronic ignition system, est. Cost of $3,700.00. The issue has gone to intermittent to every time I try to start the vehicle. This car has low miles and has been dealer maintained. This should be a recall as defective product

Filed May 15, 2019 · Electrical · 102,000 miles · PA

The liftgate on my car quit working recently. I discovered that the liftgate motor was in a pool of water. There is a recall 09v076000 that is already issued for this problem. I am very concerned that this could cause a short circuit which could lead to a fire. For some reason my car is not on the recall list even though it is that model year and the exact problem as stated in the recall. Please advise.

Filed Apr 18, 2018 · Electrical · 130,000 miles · NJ

Tl* the contact owns a 2009 mercedes-benz ml350. The contact stated that when the key fob was inserted in the ignition, the vehicle would not start and the 'key is not for this car' message appeared. The contact stated that the key had not been replaced and was the same key that he had always used to operate the vehicle. The contact stated that the failure was intermittent. The vehicle was taken to the dealer (contemporary motor cars inc., 100 oceanport ave, little silver, nj) where it was diagnosed that the electronic ignition was defective and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was approximately 130,000.

Questions about the 2009 Mercedes Benz ML350 electrical

Does the 2009 Mercedes Benz ML350 have electrical problems?

Owners have filed 17 complaints about the electrical of the 2009 Mercedes Benz ML350, 18% of all its complaints.

At what mileage do 2009 Mercedes Benz ML350 electrical problems start?

The typical (median) mileage in owner complaints is 104,284 miles.

Was there a recall on the 2009 Mercedes Benz ML350 electrical?

There is no recall for this problem on this model year.

What year does the Mercedes Benz ML350 have the most electrical problems?

The Mercedes Benz ML350 model years with the most electrical complaints are 2006 (29 complaints), 2007 (19 complaints) and 2009 (17 complaints).

Other 2009 Mercedes Benz ML350 problems

Airbags 40Seat belts 18Brakes 6Body 5Fuel system 5Lights 5Acceleration 1Seats 1Steering 1Suspension 1Transmission 1Wheels 1

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