2009 Mercedes Benz Ml350 problems, complaints & recalls
Most-reported problem areas: Air Bags (38) · Seat Belts (18) · Electrical System (9)
🧭 Reliability snapshot
Compared against other Mercedes Benz Ml350 model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
51 NHTSA complaints that reported an odometer reading.
Safety recalls (3)
Service Brakes, Hydraulic:power Assist:vacuum 2024-04-26 · campaign 24V298000 · 15,604 vehicles ⚠ DO NOT DRIVE
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML, GL, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.
Risk: Reduced brake performance or brake failure can increase the risk of a crash.
Fix: Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed on May 24, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MMUSA's number for this recall is 2024050001/2. This recall is an expansion of previous recall number 22V-315.
Service Brakes, Hydraulic:power Assist:vacuum 2022-05-09 · campaign 22V315000 · 350,294 vehicles ⚠ DO NOT DRIVE
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2012 ML-Class, GL-Class, and R-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. Moisture may accumulate and cause corrosion in the brake booster housing unit, which can result in reduced brake performance or brake failure.
Risk: Reduced brake performance or brake failure can increase the risk of a crash.
Fix: Owners are advised not to drive their vehicles until the remedy has been performed. Dealers will remove the rubber sleeve, inspect the brake booster, and as necessary, replace the brake booster. All repairs will be performed free of charge. Owner notification letters were mailed June 30, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers for this recall are 2022050014, 2022050015 2022090006, & 2022090007.
Air Bags:frontal:driver Side:inflator Module 2016-02-11 · campaign 16V081000 · 711,159 vehicles
Defect: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2009-2010 ML320 BlueTec 4Matic, GL320 BlueTec 4Matic and R320 CDI 4Matic, 2011 E350 Cabriolet and E550 Cabriolet, 2009-2011 ML350, ML350 4Matic, ML550 4Matic, ML63 AMG, and C63 AMG, 2010-2011 ML450 4Matic Hybrid, E350 Coupe, E350 4Matic, E550 Coupe, E550 4Matic, and E63 AMG, 2011-2012 GL350 BlueTec 4Matic and R350 BlueTec 4Matic, 2009-2012 GL450 4Matic, GL550 4Matic and R350 4Matic, 2007-2008 SLK280, SLK350, and SLK55 AMG, 2011-201
Risk: In the event of a crash necessitating deployment of the driver's frontal air bag, the inflator could rupture with metal fragments striking the driver or other occupants resulting in serious injury or death.
Fix: MBUSA will their notify owners, and Fiat Chrysler will notify the affected Chrysler owners. Dealers for the respective brands will replace the driver's frontal air bag module, free of charge. This recall began November 2016. Mercedes-Benz owners may contact MBUSA customer service at 1-800-367-6372 and Chrysler owners may contact Fiat Chrysler customer service at 1-800-853-1403.
Service bulletins (90)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Service Brakes 2026-09-22 · LI42.10-P-078779 · Service Bulletin/Repair Instructions
complaint repeat workshop visit for vehicle vibration while braking from 60mph. note: although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. cause although the cause of the vibra
Structure:body 2026-09-14 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Structure:body 2026-08-06 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Power Train 2026-07-14 · LI35.30-P-058566 · Service Bulletin/Repair Instructions
single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). the noise is heard once in each instance when changing direction of travel. note: sound file in attachment cause if the complaint is eliminated by experimentally loosening the outboard collar n
Visibility/Wiper 2026-04-20 · LI77.21-P-075806 · Service Bulletin/Repair Instructions
complaint the sliding sunroof glass panel of the panoramic roof reverses during the closing process, either once or multiple times, without an entrapment (anti‑pinch) event being detected. the concern may occur temporarily or repeatedly during normal closing operation. cause the automatic reversing
Exterior Lighting 2026-04-16 · LI82.10-P-078301 · Service Bulletin/Repair Instructions
complaint headlamp, front fog lamp leaky or fogged. cause fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. it does not lead to any technical impairment of the headlamp. if a pressure compensation diaphragm is fitted in the housing cover, then the l
Showing the 6 most recent of 90 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-03-24 · Electrical System · 148,000 mi“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…”
2025-09-21 · Service Brakes“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 bee…”
2025-09-10 · Steering · 90,000 mi“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. t…”
2025-08-14 · Electrical System:instrument Panel:speedometer/Odometer · 196,577 mi“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 …”
2025-06-23 · Electrical System · 140,000 mi · 🔥 fire“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 vehic…”
2025-04-14 · Structure:body“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.…”
2024-06-24 · Service Brakes, Hydraulic:antilock/Traction Control/Electronic Limited Slip:wheel Speed Sensor/Tone Ring · 230,000 mi“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…”
2023-04-13 · Fuel/Propulsion System“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). …”
2022-12-30 · Electrical System · 140,000 mi · 🔥 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 sid…”
2022-10-27 · Service Brakes, Hydraulic:power Assist:vacuum“2009 mercedes benz ml350. consumer writes in regard to nhtsa safety recall 22v-315.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.