2009 Mercedes Benz ML350
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › Mercedes Benz › ML350 › 2009
These records cover every 2009 Mercedes Benz ML350. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
3 recalls name the 2009 Mercedes Benz ML350. Newest first.
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 and remedy
Risk
Reduced brake performance or brake failure can increase the risk of a crash.
Remedy
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.
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 and remedy
Risk
Reduced brake performance or brake failure can increase the risk of a crash.
Remedy
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.
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…
Risk and remedy
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.
Remedy
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.
Owner complaints
93 complaints1 involved a crash6 involved a fire3 injuries
What owners report most
Latest complaints
- Electrical system
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…
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.
- 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…
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
- Steering
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…
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.
- Electrical system › Instrument panel › Speedometer/odometer
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…
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.
- Electrical system
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…
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.
- Electrical system · 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.
- Service brakes, hydraulic › Antilock/traction control/electronic limited slip › Wheel speed sensor/tone ring
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…
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.
- 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).
- Electrical system
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…
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.
- Service brakes · Service brakes, hydraulic › Power assist › Vacuum
2009 mercedes benz ml350. Consumer writes in regard to nhtsa safety recall 22v-315.
- Electrical system · Unknown or other
Driver side front door and driver side back door do not unlock or lock. You have to Manually unlock and lock.
- Electrical system
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…
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.
- Exterior lighting
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…
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.
- Exterior lighting
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…
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.
- Seat belts
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…
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.
- Exterior lighting · Service brakes
TL* the contact owns a 2009 mercedes-benz ml350. The contact stated while driving at an unknow speed, the exterior light warning message was displayed on the instrument panel. The contact stated that the brake light bulb was replaced however, the failure recurred. The vehicle was taken to park…
TL* the contact owns a 2009 mercedes-benz ml350. The contact stated while driving at an unknow speed, the exterior light warning message was displayed on the instrument panel. The contact stated that the brake light bulb was replaced however, the failure recurred. The vehicle was taken to park place motorcars mercedes-benz dallas (113 lemmon ave, dallas, tx 75209; (214) 736-5753) where the contact was informed that the rear passenger's side brake light harness needed to be replaced. The vehicle was repaired however, the failure recurred on the driver's side and the contact was informed that the driver's side rear brake light wiring harness needed to be replaced. The vehicle was not yet repaired. The manufacturer was informed of the failure. The failure mileage was approximately 40,000.
- Unknown or other
Strong gas odor, car was unsafe to drive could potentially cause fire. The was in motion, the odor kept getting stronger as I drove the car. once the car was stationary, the order started to go away. the issue was specially strong when the ac was turned on. It was hard to breathe when riding in the car. the issue was when ever the car was in motion in city street and in the highway.
- Electrical system
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…
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
- Electrical system
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.
- Seat belts
Both rear seat belts will not retract. they are fully extended.
- Air bags
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.
- Air bags
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…
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.
- Air bags
Takata recall for air bag replacement
- Air bags
TL* takata recall. The contact owns a 2009 mercedes-benz ml350. The contact received notification of nhtsa campaign number: 16v081000 (air bags); however, the parts to do the repair were unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall…
TL* takata recall. The contact owns a 2009 mercedes-benz ml350. The contact received notification of nhtsa campaign number: 16v081000 (air bags); however, the parts to do the repair were unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. Mercedes-benz of el dorado hills (1000 mercedes ln, el dorado hills, ca 95762, (888) 773-3154) was contacted and confirmed that the parts were not available for the recall remedy. The manufacturer was made aware of the issue 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
It does not retract back at all
Defect investigations
NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.
- Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant…
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11009122Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1. Distributor housing leaks. 3.2. Pump fitting leaks. 3.3. Washer fluid hose cannot be snapped into place on pump fitting. 3.4. Washer fluid hose will not stay on pump fitting, although connector OK. 4. Washer fluid line. 4.1 Connector will not stay on pump fitting because it is broken. 4.2 Sealing ring in connector missing. 4.3 Sealing ring in connector fitted, but deformed and therefore leaks. 4.4 Damage to washer line by animal. 5. Seal on heating washer fluid reservoir/washer fluid reservoir. Remedy Replace defective component parts only. Do not replace any adjacent component parts that are intact. Note: Repair kits for washer line hoses do exist to allow patches for line damage.
- 11008323Complaint Headlamps fogged or droplets forming. Cause Due to its outlet openings, the headlamp is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate into the headlamp. This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check housing cover of lamp unit for natural fogging or condensation as per LI82.10-P-078301. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. Note: Order service covers and desiccant packs based on the validity description. 1. Remove headlamps. 2. Remove all grommets from outlet openings. 3. Seal vent openings with sealing profile. Important: All openings must be sealed carefully for the pressure compensation diaphragm to work properly! 4. Remove existing service cover. 5. Place desiccant packs into the new service covers and bolt down (Picture_01). 6. Glue the new diaphragm onto the intended surface at the service cover (Picture_02). Note: The bonding surface must be clean and dry. 7. Attach service cover with desiccant pack at headlamp. 8. Install headlamp. To ensure that the desiccant pack (absorption) acts effectively, the headlamp has to be air-sealed. Observe or check the following points for this: 1. Seals at the central connector must all be present and correctly fitted (Picture_03). 2. The new transparent diaphragm must be correctly bonded (Picture_04). 3. Check headlamp housing for any external damage.
- 11008091Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21) in the headliner. C. Dirt inside the microphone housing Remedy 1. Press finger on rear of microphone (on adhesive tape) 2. Remove microphone cap from the front 3. Eliminate protruding material residues of the microphone cutout at the headliner, e.g. with a soldering iron. The microphone must be seated in the headliner as shown in picture "2". 4. Push microphone from behind until it is firmly pressed into the headliner 5. Maintain pressure and press/clip cap into microphone from the front. Note: The cover cap must be clearly heard and felt to engage. 6. This procedure must be carried out on both microphones (B25/20 and B25/21) Note: It is recommended to replace the cover caps. The non-woven cloth in the cover cap protects the microphone from soiling and must not be removed. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicles warranty in any way.
- 11007974Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy In advance, observe LI82.10-P-078301 "Headlamps or Front Fog Lamps Leaking or Fogged". 1. Prepare headlamp/check for external damage: For headlamps with a closed system 1. Check the headlamps for any external damage and check also for correct seating of the Gore-diaphragm/correct latching of the cover caps. 2. If the headlamp exhibits any external damage, replace the headlamp. For headlamps with an open system 1. Check the headlamps for any external damage and seal off the vent then make sure the cover caps are latched correctly into place. 2. If the headlamp exhibits any external damage, replace the headlamp. Note: A headlamp with external damage is not a warranty or goodwill case. 2. Leak test of headlamp with overpressure: Connect test adapter to pressure tester. (Figure 1) Check test adapter for leak tightness. To do so, connect plug and coupling (picture 2) and apply a maximum overpressure of 30 mbar. The pressure must remain constant. If the pressure does not remain constant, use a new adapter. Seal all the outlet openings using sealing compound and the given diaphragm with the plunger (picture 3). (Picture 4) Make allowance for the different headlamp variants here (there are different outlet openings). Check if the headlamp needs to be removed to gain access to the diagnostic socket on the headlamp housing. Plug the adapter onto the diagnostic socket on the headlamp housing. (Picture 5). Apply a maximum of 30 mbar overpressure to the headlamp housing. Note: If the maximum overpressure of 50 mbar is exceeded the headlamp seal will be damaged. If a pressure drop of less than 10 mbar is measured within 30 seconds, the headlamp is not leaky and the problem is down to natural physical fogging. If a pressure drop of more than 10 mbar is measured within 30 seconds, the headlamp is leaky. Note: The leaky position can be localized with the aid of soap suds. Replace any leaky headlamps. Note: Desiccant packs can be installed for headlamps that are not leaky. See: LI82.10-P-064766 Fogged headlamp, desiccant pack installed - open ventilation system LI82.10-P-078304 Fogged headlamp, desiccant pack installed - closed ventilation system
- 11007753Complaint Headlamp or 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. Headlamps comply with all applicable standards. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing fogged/condensed LED headlamps and LED rear lamps: 1. Drive vehicle into workshop (temperature higher than +18 C/+64.4 F) and connect the exhaust extraction. Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the hood or trunk. 4. Switch on the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Clearing fogged/condensed halogen/xenon headlamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4F). Note: Do not perform an engine wash before the defogging test. 2. Switch off the engine. 3. Open the hood. 4. Switch off the lights. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation, a significant reduction in the formation of condensation must be clearly recognizable (thawing progress). Note: If there is no visible reduction in the formation of condensation, check the headlamp for a defect. (See Remedy 2) It is not physically possible to defog the headlamps completely. Fogging does not impair the operation or the service life of the headlamp. Remedy 2 A Damaged headlamp can be identified as follows: 1. Check the headlamp for external damage and that the cover caps and the diaphragm are correctly seated. 2. Check the electrical connectors of the plugs and pins. 3. Check for leak tightness in accordance with LI82.10-P-078307. The test can only be conducted on headlamps. 4. If the headlamp or the rear lamp has any external damage, replace the component part in accordance with the WIS instructions. Note: External damage to the headlamp/rear lamp or faulty seating of the cover caps does not present a warranty or goodwill case. With headlamps, it is possible to install desiccant packs if the problem occurs repeatedly. Open ventilation system: LI82.10-P-064766. Closed ventilation system LI82.10-P-078304
- 11005294Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 C/+64.4 F) Note: Do not wash the vehicle or subject it to high-pressure cleaning before the defogging test. 2. Switch off the engine and connect battery support via a charger. 3. Open the trunk. 4. Switch on the exterior lighting. 5. Leave the vehicle in this state for 60 minutes. 6. Check for formation of condensation -> a significant reduction in the formation of condensation must be clearly recognizable (defogging progress).
- 10248173Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (MY) 2009-2012 GL-Class, ML-Class, R-Class, and S-Class (164/166, 251, 221 platforms) vehicles, the coding for the engine control unit does not correspond to the specifications as part of the BlueTEC update diesel field measure (aka Emission Modification). This could result in the VIN number not being read out from the vehicle. This could affect the vehicle smog check. MBUSA will conduct an Emission Service Campaign in which an authorized Mercedes-Benz dealer will update the SCN coding for the engine control unit on the affected vehicles.
- 10248162Crease formation on genuine leather seat covers in vehicles with low mileage Objects left on the seats for extended periods of time (pressure marks). Objects wedged between the seat backrest and seat cushion (e.g. seat belt buckle). Light initial creases due to vehicle handling. Light creases in the outer covers originating from the production process (missing finish). Heat treatment of the seat covers using heat gun and plastic wedge. Be very careful to not overheat the seat material!
- 10235996Additional information around the recent recall announcement affecting approximately 705,983 Mercedes-Benz passenger vehicles involving Takata driver-side airbags containing PSDl-5 type inflators
- 10235978Recall Campaign announcement for Takata driver airbags.
- 10205249No cooling output, fault code 9006 stored in air conditioning control unit.
- 10205233Mobile phone cotacts are not transferred completely.
- 10205225Headlamps fogged.
- 10186145Creaking noise from fixed glass section of panoramic roof in area of rear passenger compartment grab handles
- 10186144Armrest In Center Console (Front) Only Opens On One Side Or Not At All - Model Series 167
- 10177571Lamp unit fogged or droplets forming. Due to the vent openings, the lamp unit is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate it. This can result in deposits on the diffuser and lens. Check housing cover of lamp unit for natural fogging or dew as per GI82.10-P-009047. . 1. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the condensation has completely evaporated. 1.1. Order the required service covers by referring to the variant overview. 1.2. Remove lamp unit 1.3. Remove all grommets from vent openings. 1.4. Seal vent openings with sealing profile. Important: All openings must be sealed carefully for the pressure compensation membrane to work properly! 1.5. Remove existing service cover 1.6. Place desiccant packs in new service covers and bolt down 1.7. Stick new diaphragm onto specified surface on service cover [picture of service cover] Note: The bonding surface must be clean and dry. 06
- 10176670To enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) has entered into a settlement regarding claims relating to alleged mold and mildew type odors originating from the HVAC system in certain Mercedes-Benz vehicles. As part of the settlement, MBUSA has agreed to offer sliding-scale warranty coverage for certain vehicles diagnosed as having mold or mildew type odors originating from the HVAC system?although that coverage will not take effect until the settlement is judicially approved and other events occur; likely not until December 7, 2020 at the earliest (see below). If the settlement becomes effective, coverage will include cleaning of the evaporator and replacement of the HVAC filters
- 10167577Since 12/2012 (model 166) and since 06/2013 (model 242) the glass breakage loops are no longer in the side windows and rear window. Suitable interior protection ensures that the interior monitoring function continues to operate correctly.
- 10167572If it is necessary to replace an HV battery, the return will only be accepted with the filled-out ?Analysis Sheet for Transportability of High-Voltage Batteries Form? accompanied by: , the removed part, the quick test printout, the BMS control unit log printout, the repair documentation and with all required documentation listed in Section E of the Form.
- 10167564Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery replacement.
- 10167563The COMAND unit does not start or the COMAND display remains dark. The COMAND unit cannot be operated. Note: The problem disappears after a lengthy idle period (>6h) or after interrupting the power supply (circuit 30).
- 10167561Xenon burner inoperative or flickers
- 10167553Combination message: "Clean fuel filter" is displayed. The fault code 162500 (water level message - Bosch) or P226997 (water level message - Delphi) or 171600 (filter load - Bosch) is stored in the engine control unit.
- 10167040This Service Campaign has been initiated because Daimler AG (DAG), the manufacturer of Mercedes-Benz vehicles, has determined that the mbrace software does not correspond to current production configuration. An authorized Mercedes-Benz dealer will update the mbrace control module software at the next workshop visit.
- 10167007Engine diagnosis warning lamp active. Fault code 20BE1B and/or 20BD1B (The heating element of the AdBlue tank has a malfunction) is logged in the Blue-Tec control unit.
- 10167006Engine diagnosis warning lamp active. Fault code 20BE1B and/or 20BD1B (The heating element of the AdBlue tank has a malfunction) is logged in the Blue-Tec control unit.
- 10167002Creaking noise when making vertical or longitudinal adjustment to electrical steering column
- 10166990Thumping noises from front axle when driving over bumps on road.
- 10166980Traces of oil in area of oil cooler (inner V) on engine 642
- 10166978Engine diagnosis warning lamp lights up - Fault code entry (FC) 14A600 or 14A700
- 10166976Message in instrument cluster "DISTRONIC PLUSCurrently Unavailable - See Owner's Manual"
- 10166975This Customer 1 Action has been initiated because certain mbrace subscribers were recently contacted by mbrace informing them that they need to have an i-button call performed to ensure their mbrace device has registered with the Verizon Telematics systems. If the i-button call failed or if the customer was unable to perform the i-button call, the mbrace agent instructed the customer to make an appointment with their dealer to have the issue corrected and/or i-button call performed. The vehicles impacted range from model year 2002 to 2014.
- 10166099Pneumatic comfort systems with insufficient performance, entirely inoperative or leaky.
- 10166088Noises from the mounting of the rear weight sensing system (WSS) sensors
- 10165852Noise in center console area of W166.
- 10165851Side windows may make noises when closing and opening, or reverse direction when closing.
- 10165850Side windows may make noises when closing and opening, or reverse direction when closing.
- 10165842With an unfavorable sensor position and high rpms, the sensor may deliver incorrect rpm values and the transmission control unit may detect overspeeding. Owing to the software application, the control unit is not reset in the case of implausible messages.
- 10164811Throttle lift-off clunking noises at drive shafts of rear axle
- 10158329Oil in engine wiring harness
Every Mercedes Benz ML350 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.