2014 Mercedes-Benz C350

Recalls

4 recalls name the 2014 Mercedes-Benz C350. Newest first.

• Air bags › Frontal

  Aug 13, 2021NHTSA 21V638000205 vehicles

  Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2015-2016 E400 Coupe, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2011-2014 E350 Coupe, and 2012-2014 E350 Cabrio vehicles. An incorrect front passenger air bag may have been installed during a prior repair.

  Risk and remedy

  Risk

  An incorrect air bag may not function properly in a crash, increasing the risk of injury.

  Remedy

  Dealers will replace the front passenger air bag on the affected vehicles, free of charge. Owner notification letters were mailed on September 10, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.

  Full recall details →

• Communication

  Nov 1, 2019NHTSA 19V78700024,226 vehicles

  Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location. For a full list of the affected models visit…

  Risk and remedy

  Risk

  An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.

  Remedy

  MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge. The recall began December 23, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019120008.

  Full recall details →

• Air bags › Frontal › Passenger side › Inflator module

  Jan 9, 2019NHTSA 19V010000288,779 vehicles

  Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2014 C250, C300 4Matic, C350, C63 AMG, E350 4Matic Coupe, E350 Cabrio, E350 Coupe, SLS AMG Cabrio, SLS AMG Coupe, 2014-2015 C250 Coupe, C350 4Matic Coupe, C350 Coupe, C63 AMG Coupe, GLK 350, GLK250 BlueTec 4Matic, GLK350 RWD, 2015-2017 E400 4Matic Coupe, E400 Cabrio, E400 Coupe, 2014-2017 E550 Cabrio, and…

  Risk and remedy

  Risk

  An inflator explosion may result in sharp metal fragments striking the passenger or other occupants resulting in serious injury or death.

  Remedy

  MBUSA will notify owners, and dealers will replace the passenger frontal air bag module, free of charge. The recall began March 29, 2019. Owners may contact MBUSA customer service at 1-800-367-6372.

  Full recall details →

• Air bags › Frontal

  Oct 6, 2017NHTSA 17V627000495,290 vehicles

  Mercedes-Benz USA, LLC. (MBUSA) is recalling these vehicles: 2014-2018 CLA250, CLA250 4Matic, CLA45 AMG 4Matic, 2015-2018 GLA250, GLA250 4Matic, GLA45 AMG 4Matic, C300 4Matic, C63S AMG, 2012-2014 C250, C350, C300 4Matic, E550 4Matic, 2013-2014 C63 AMG, 2012-2015 C250 Coupe, C350 Coupe, C63 AMG Coupe, 2013-2015 C350 4Matic Coupe, GLK250 4Matic BlueTec…

  Risk and remedy

  Risk

  If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.

  Remedy

  MBUSA will notify owners, and dealers will add sufficient grounding to the steering components, free of charge. The recall began in December 6, 2017. Owners may contact MBUSA customer service at 1-877-496-3691.

  Full recall details →

Owner complaints

What owners report most

1. Air bags8
2. Structure2
3. Power train1
4. Steering1
5. Vehicle speed control1
6. Service brakes1
7. Electrical system1

Latest complaints

• Jan 8, 2026TX60,000 mi
  Structure › Body › Door › Handle › Interior
  The contact owns a 2014 Mercedes-Benz C350. The contact stated that while the vehicle was parked, the front driver’s side interior door latch detached. The contact had to reach through the front driver’s side window to open the front driver's side door using the exterior door handle. No warning…

  The contact owns a 2014 Mercedes-Benz C350. The contact stated that while the vehicle was parked, the front driver’s side interior door latch detached. The contact had to reach through the front driver’s side window to open the front driver's side door using the exterior door handle. No warning lights were illuminated. The vehicle remained at the residence. A dealer was contacted and informed the contact that there was an unknown recall related to the failure; however, the VIN was not included in the recall. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.

• Aug 28, 2025MD64,000 mi
  Air bags
  The contact owns a 2014 Mercedes-Benz C350. The contact stated that while attempting to start the vehicle, the air bag and the driver’s side air bag malfunction service required warning light illuminated. A dealer was contacted. The vehicle was taken to a dealer where it was determined that the air…

  The contact owns a 2014 Mercedes-Benz C350. The contact stated that while attempting to start the vehicle, the air bag and the driver’s side air bag malfunction service required warning light illuminated. A dealer was contacted. The vehicle was taken to a dealer where it was determined that the air bags needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and declined to cover the cost of the repair. The approximate failure mileage was 64,000.

• May 30, 2024AR
  Structure › Body
  1. the component that failed was the front stationary sunroof panel, and what failed on it was the adhesive which leads to it leaking water, and the potential of even falling off while driving 2. it could lead to falling off on the highway which could lead to damages to it or other vehicles around…

  1. the component that failed was the front stationary sunroof panel, and what failed on it was the adhesive which leads to it leaking water, and the potential of even falling off while driving 2. it could lead to falling off on the highway which could lead to damages to it or other vehicles around it 3. Unknown 4. Yes it was inspected at a nearby dealer ship in which they stated that the glue was failing on that part of the car and would need to be replaced 5. No warnings for this issue, i was only able to notice it because when it rains now if not under cover that part of the car will allow water to leak into the vehicles inside There was a recall campain in which the number is 2021070010 and it included 2014-2020 mercedes C class which my vehicle matches said description but when i have tried to get this issue resolved but my vehicles vin number was not apart of this recall as it shows across multiple sources

• Sep 27, 2023FL
  Power train
  I was driving my vehicle when the transmission started shifting erratically. The shifts were not smooth but hard and the car was shuddering. Yes the vehicle is available for inspection. My safety and the safety of others were at risk due to the erratic behavior of the vehicle and how it affected…

  I was driving my vehicle when the transmission started shifting erratically. The shifts were not smooth but hard and the car was shuddering. Yes the vehicle is available for inspection. My safety and the safety of others were at risk due to the erratic behavior of the vehicle and how it affected my ability to focus on driving safely. Yes my vehicle has been inspected by the manufacturer and the problem has been reproduced by my local Mercedes Benz dealer. There were no warning lamps or messages prior to the failure. After a few weeks of driving I saw a “low coolant” warning appear, this turned out to indicate that the radiator had leaked coolant into the transmission which damaged the internal transmission components and torque converter.

• Mar 27, 2023NJ
  Service brakes
  2014 Mercedes-Benz E-350 4matic. Brake fluid and Brake warning lights illuminated. The vehicle was taken to the local dealer where the service technician advised the brake lines to the rear tries were rusted and had to be replaced . The vehicle was repaired at a estimated cost of $2,900. The…

  2014 Mercedes-Benz E-350 4matic. Brake fluid and Brake warning lights illuminated. The vehicle was taken to the local dealer where the service technician advised the brake lines to the rear tries were rusted and had to be replaced . The vehicle was repaired at a estimated cost of $2,900. The approximate failure mileage was 100,000. we were advised that the car is a hazard to drive until repaired. We have requested the dealer to turnover the failed parts for our inspection and use

• Jul 12, 2020FL
  Air bags

  I was notified in february 2019 that car needed the air bags replaced! Here a year and a half later they still don't have the parts! I think they are lieing to me!

• Apr 2, 2020MS60,000 mi
  Air bags

  I have an open recall for my airbags since january of 2019. I am shipping my vehicle through the military in 2 months but am filling the paperwork out now and one of the criteria IS that the car cannot have any open recalls. When I did research on the recall it IS still open and unable to be fixed due to "remedy not available yet."

• Sep 19, 2019OH
  Air bags
  TL* takata recall. The contact owns a 2014 mercedes-benz C350. The contact received notification of nhtsa campaign number: 19v010000 (air bags). The parts for the recall remedy were not available. The contact stated that the manufacturer exceeded a reasonable amount of time to repair the vehicle.…

  TL* takata recall. The contact owns a 2014 mercedes-benz C350. The contact received notification of nhtsa campaign number: 19v010000 (air bags). The parts for the recall remedy were not available. The contact stated that the manufacturer exceeded a reasonable amount of time to repair the vehicle. Mercedes-benz of akron (1361 e market st, akron, oh 44305, (330) 733-7511) was contacted and confirmed that parts were not available. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Vin tool confirms parts not available.

• Apr 23, 2019CACrash1 injury
  Vehicle speed control

  2014 mercedes benz C350. Consumer writes in regards to defective acceleration system. *Ld the consumer stated the cruise control malfunctioned causing a 4 car collision. The consumer stated the information in the police report was false and that the crash was inadequately investigated. *Js

• Apr 13, 2019TN
  Air bags

  Front right malfunction

• Mar 9, 2018GA
  Air bags
  TL* the contact owns a 2014 mercedes-benz C350. The contact stated that nhtsa campaign number: 17v627000 (air bags) exceeded a reasonable amount of time for repair. The contact received the recall notification on december 17, 2017. Mercedes-benz of augusta (3061 washington road, augusta, ga 30907…

  TL* the contact owns a 2014 mercedes-benz C350. The contact stated that nhtsa campaign number: 17v627000 (air bags) exceeded a reasonable amount of time for repair. The contact received the recall notification on december 17, 2017. Mercedes-benz of augusta (3061 washington road, augusta, ga 30907, 707-860-11111) stated that parts were unavailable for the repair. The manufacturer was not contacted. The contact had not experienced a failure. Vin tool confirms parts not available.

• Dec 26, 2017PA22,000 mi
  Air bags · Electrical system · Steering
  Steering wheel spring grounding problem can accidentally deploy airbag. recalled in oct 2017 but I'm told parts will not be available until may 2018. this IS an unreasonably long time. I went to trade-in this car to purchase a new one and was told that no dealer can sell a car with a pending…

  Steering wheel spring grounding problem can accidentally deploy airbag. recalled in oct 2017 but I'm told parts will not be available until may 2018. this IS an unreasonably long time. I went to trade-in this car to purchase a new one and was told that no dealer can sell a car with a pending safety recall except "as IS" through an auto auction, which lowers the value of my car by over $2,000 versus a normal dealer trade. how do I recover this loss without suing mercedes? are there any government remedies other than private lawsuit?

• Nov 7, 2017MD
  Air bags

  Takata recall: my mercedes dealer cannot repair or replace the air bag, causing me to continue to drive an unsafe vehicle and risk personal injury or death.

Defect investigations

NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.

• Desiccated Air Bag Inflator Rupture

  EA21002Opened Sep 17, 2021Open
  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.

• 11010818Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission control unit Y3/8n4 Remedy It is important that LI54.15-P-057373 is processed before replacing any component parts (transmission 722.9). After processing and complying with the above documents, perform a reset on the transmission control unit Y3/8n4 (VGS) (ignition reset), check that the transmission connector is seated correctly and inspect the PINs for concerns. If communication with the VGS cannot be established afterwards, the component part 'electrohydraulic controller unit (EHS)' must be replaced, as it is not possible to transfer the valve characteristics under the above-mentioned conditions. Installation of a VGS repair kit is not permitted in this case.
• 11010494Complaint 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). Note: -If no reduction in the degree of fogging is visible, the rear lamp is defective and must be replaced. -It is not physically possible to defog the headlamps completely some residual fogging may remain. Fogging does not impair the functionality or the service life of the rear lamps. -Simultaneous fogging of multiple component parts indicates extreme climatic conditions and also does not impair the functionality or the service life of the rear lamps. Remedy 2: You can recognize a defective rear lamp as follows: 1. Check the rear lamps to ensure that no external damage is present, and that the differential aeration cells and the diaphragm are present and correctly seated. -> If there are signs of external damage on the rear lamp, the component parts must be replaced as per WIS instructions. 2. Check the electrical connectors of the plugs and pins. -> If moisture/corrosion/etc. is present, the component part must be replaced as per WIS instructions. 3. Check for leak tightness -> Close all openings with Terostat IX or similar and establish and stabilize via an overpressure (4050 mbar) via the plug. -> In the event of a sudden pressure drop, the component part must be replaced as per WIS instructions. Note: External damage to the rear lamps does not constitute a warranty or goodwill case.
• 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.
• 11008873Complaint Tension-releasing impact of the propeller shaft with the force-free in D "KID" function, after vehicle has stopped. Cause The tension-releasing jolt in the drivetrain originates as a result of the "release" of energy stored when braking through the force-free switch after stopping. It is suspected that the longitudinal bearing is being placed under tension here as a result of the vehicle "dropping off". Remedy 1. Mark the installation position of the joint prior to the removal (picture a+b). This is important for vehicles with a weighted drivetrain ex factory to ensure correct installation after operations have been completed. 2. Clean and degrease propeller shaft toothing. The toothing must be free of grease, e.g. through the use of a brake cleaner. Do not use wire brushes, else the surface could be damaged (picture c). 3. Coat propeller shaft toothing with A 000 989 16 08 Antifriction coating. Coat the entirety, ensuring that the subsurface is no longer visible. When doing so, only coat the outer toothing. Ensure that the coat is not too thick, otherwise the coating could chip (picture d). 4. Observe the drying time of at least 1 hour. 5. Lightly grease the propeller shaft toothing at the outer and inner toothing with A 001 989 44 51 12 Grease (picture e).
• 11008712Complaint Check engine light on. One of the below fault codes is current in the engine control module (N3/10). P04DB29, P04DB31, P04DB79 Cause Open circuit or high resistance to crankcase vent line contact Remedy 1. Check the electrical connector for the relevant vent line contact switch noted below. Refer to attached photos of connection locations. 2. Ensure the bolted connection is secure and bolt can be torqued (9Nm). 3. Check continuity from vent line connection to ME control unit. Repair wire if damage is found. The circuit from ME provides 5V and is pulled to 0V when the ground connection is intact. M260 P04DB31- S88/15 P04DB79- S88/16 M264 P04DB31- S88/15 P04DB79- S88/16 P04DB29- S88/17 M270/M274 P04DB79- S88/5 Note: This repair is not warrantable if the connection was left loose during previous repair/maintenance.
• 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.
• 11008064In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you that on certain Model Year 2011-2018 C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT vehicles with 6 and 8 cylinder gasoline engines, the software of the engine control unit may not meet current specifications. Under certain conditions, the catalyst heating might not work. Therefore, an Emission Service Campaign is being conducted to remedy the situation. Our records indicate that your vehicle is included in the affected population of vehicles.
• 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
• 11006658Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (MY) C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT (204, 205, 207, 212, 213, 217, 221, 222, 463, 216, 218, 166, 292, 253, 231, and 190 platforms) vehicles with 6 and 8 cylinder gasoline engines, the software of the engine control unit may not meet current specifications. Under certain conditions, the catalyst heating might not work. MBUSA will conduct an Emission Service Campaign. An authorized Mercedes-Benz dealer will update the engine control unit software on the affected vehicles. Affected customers will be notified via First Class letter to have the update performed on their vehicle.
• 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).
• 10252770As previously reported, to 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 allegations that the 590 Mars Red paint available as an original, exterior color option for certain models of Mercedes-Benz vehicles may experience peeling, flaking, or bubbling of the exterior paint or clear coat. This Mars Red paint is sometimes referred to as Fire Opal. The purpose of this update is to alert you that: 1. The Settlement has received final approval. The Settlement will go into effect on March 11, 2024. As of that date, customers are eligible to receive extended warranty coverage under the Settlement. 2. Under the Settlement, an eligible customer might receive extended warranty coverage as of the date the vehicle is presented to your dealership OR certain customers might have validated Qualified Future Repair claims, making them eligible for a different level of coverage. To determine if a customer: (a) is eligible for extended warranty coverage; and (b) what level of warranty coverage is available to them, please refer to the Service Packages section in VMI/Netstar. 3. Damage code 21800 (damage type 00) must be used for warranty claims covered pursuant to the Settlement. Please note that you should only claim for the percentage of warranty repair cost reflected in VMI/Netstar (see below, e.g., for Period Two, claim only 50% of warranty repair cost). 4. Before the dealership agrees to perform any work: The customer should be given a Repair Order containing: (1) an estimate for the repair, (2) the portion covered under the extended warranty; and (3) the customers contribution amount for the repair, if applicable. The customer must agree to pay their contribution amount for the repair and sign the Repair Order before the repair is performed.
• 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!
• 10232321Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle regardless of ownership. This warranty extension applies to the replacement of the rear subframe under the standard warranty terms and conditions in the event the subframe experiences corrosion with perforation (holes). The extended warranty is applicable to the following vehicles: Model Year Model (platform) Model Year Model (platform) 2005 - 2011 SLK-Class (R171) 2008 - 2015 C-Class Sedan/Coupe (W/C204) 2012 - 2017 SLK-Class (R172) 2010 - 2015 GLK-Class (X204) 2012 - 2016 CLS-Class (C218) 2010 - 2016 E-Class Sedan/Wagon (W/S212) 2013 - 2016 SL-Class (R231) 2010 - 2017 E-Class Coupe/Cabrio (C/A207) Only the following damage code can be claimed for the replacement of the rear subframe due to corrosion with perforation: Damage Code: 35441 47 Always check VMI to determine if a vehicle is covered under this 20 years/unlimited miles extended warranty. Please
• 10207199Complaint The range of the integrated garage door opener (GTO) is too short. Cause 1. Vehicles equipped with infrared windows and/or a heated windshield may suffer from complaints involving low transmission power. 2. When comparing the range between the integrated GTO and the garage door hand transmitter, the garage door hand transmitter is tested outside the vehicle. 3. The garage door hand transmitter is being aimed towards the garage door, but the vehicle is in a different position. 4. The garage door drive is old. Remedy 1. The lower level of transmission power is mainly perceived by customers who did not have any infrared windows (code 595) or all-round infrared windows (code 596) or heated windshield (code 597) in their previous model or who have another model without this special equipment in their fleet. The loss in transmission has technical reasons, i.e. a thin metal film is fitted in the windows. Please consider these codes and advise the customer accordingly! Replacing parts does not remedy the problem. 2. Perform the comparison test between the integrated GDO and the garage door hand transmitter under identical conditions. The garage door hand transmitter must be inside the vehicle and must be held at the height of the inside rearview mirror. 3. The customer instinctively aims the garage door hand transmitter towards the door. However, the transmission direction of the integrated GDO depends on the position of the inside rearview mirror, and thus depends directly on the position of the vehicle relative to the receiving antenna of the garage door drive.
• 10207198Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. The integrated garage door opener (GDO) is not compatible with the opening system installed in the garage. 2. The garage door drive uses a rolling code system. In contrast to the fixed code system, the LED in the mirror in this case flashes green after programming. 3. When the handheld remote control is initialized with the integrated GDO, the distance between the handheld remote control and the GDO is too long or too short. 4. The maximum programming time of the hand transmitter was exceeded. The hand transmitter switches itself off after 10s to 20s. However, the garage door opener needs up to 30s to learn the code. 5. The maximum programming time of the integrated GDO was exceeded. The integrated GDO has aborted programming unsuccessfully. 6. The GDO cannot be programmed after replacement (See #9). 7. The batteries of the hand transmitter are too weak. 8. A part of the signal was not registered correctly. 9. The GDO is not programmed to US standards. 10. Errors with Chamberlin MyQ, Liftmaster MyQ, or Craftsman AssureLink systems causing loss of synchronization. Remedy Note: The numbering of the remedies refers to the numbering of the causes. 1. Installation of a universal receiver. Order via the Homelink Hotline. 2. In the case of garage door drives with rolling code system, synchronization of the garage door drive must also be performed. 3. Keep the correct distance when initializing! This can vary between 5 and 20 cm depending on the system. If the initialization attempt is unsuccessful, repeat the initialization process, changing the distance between the hand transmitter and the mirror.
• 10205790After starting the engine, the instrument cluster shows the "EBD not available, diagnosis/test stand" message in yellow.
• 10205265Outside mirror fogged.
• 10205239"Anti-theft protection activated".
• 10205237The COMAND unit does not start or the display remains dark.
• 10205225Headlamps fogged.
• 10205215Window lifter and outside mirror on passenger side malfunction after replacement of door control unit.
• 10205156Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit.
• 10205154Gasket may settle causing a slight oil leak.
• 10205147Ticking or pulsing noise from high-pressure pump and/or fuel injectors.
• 10187793Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (?MY?) 2013-2017 B-Class, C-Class, CLA-Class, CLS-Class, E-Class, G-Class, GL-Class, GLA-Class, GLC-Class, GLE-Class, GLK-Class, GLS-Class, GT-Class, M-Class, S-Class, SL-Class, and SLK-Class (117, 156, 166, 172, 190, 204, 205, 207, 212, 217, 218, 222, 231, 242, 253, 292, and 463 platform), the software for the PASS control unit does not meet current series production configuration and therefore the possibility exists that a correct GPS position cannot be determined in the control unit for location based services, and an incorrect vehicle position may be displayed. Please note the E-call feature is not impacted by this issue. What We?re Doing MBUSA will conduct a Service Campaign. An authorized Mercedes-Benz dealer will update the PASS Control Unit Software
• 10187780To 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 allegations that the ?590 Mars Red? paint available as an original, exterior color option for certain models of Mercedes-Benz vehicles may experience peeling, flaking, or bubbling of the exterior paint or clear coat. This ?Mars Red? paint is sometimes referred to as ?Fire Opal.? A motion for approval of the settlement was filed with the Court on December 21, 2020. The settlement must receive final approval from the court before it takes effect. As part of the settlement, MBUSA has agreed to offer sliding-scale warranty coverage for certain vehicles to repaint any non-plastic exterior surface of a Subject Vehicle because of peeling, flaking, or bubbling of the exterior paint or clear coat. This warranty coverage does not cover repainting necessitated by external influences such as automobile accidents, scratches, or road debris. Warranty coverage will not take effect until the settlement is judicially approved and other events occur. If the settlement becomes effective, coverage will include inspection of the vehicle to diagnose the possible cause of any observed peeling, flaking, or bubbling of the exterior paint or clear coat.
• 10186141NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock
• 10186135If the customer brakes sharply from a speed of > 30mph, without ABS intervention, there is a single cracking noise from the area of the ESP hydraulic unit
• 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
• 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).
• 10167560Fault message in display - Right rear turn signal light inoperative
• 10167554Engine diagnosis warning lamp activated. Fault code P045600 "Very fine leak" or P044200 "Fine leak" stored in engine control unit.
• 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.
• 10167552Engine does not start, or various fault messages in instrument cluster immediately after engine start and servo assistance is reduced. The following display messages may appear: - Red message "Power Steering Malfunction - See Operator's Manual" including acoustic warning - Red or yellow message "ESP / ABS Currently Unavailable - See Owner's Manual", sometimes with acoustic warning - White message about tire pressure monitor or run flat indicator: "Tire Pressure Loss Warning Defective" or "Tire Pressure Monitor Defective" In addition, the indicator lamps of the following systems may light up: - Brakes / ABS / ESP / ESP Off / engine diagnosis Furthermore: - The chassis CAN is partially or completely disrupted - Several control units (e.g. the electric power steering, ESP, engine etc.) cannot be interrogated or are not listed in the quick test - Various CAN communication errors from other control units may be logged (see list "Control unit / Fault code")
• 10167550Single, throttle lift-off, clunking noise from the side shaft when starting off (audible at the wheel). The clunk is heard once when changing from forward to reverse (and vice versa).
• 10167546FC 2783 (Friction power of torque converter lockup clutch is too high) or FC 0741 (Actuation of torque converter lockup clutch not possible) stored in transmission control unit. One possible additional customer complaint could be "poor acceleration" e.g. due to engine intervention. This can affect all NAT2FE+ (7G-TRONIC PLUS) vehicles with engines OM651, OM642LS and M278 in the production period from 04/2011 to 02/2012 and with more than 10,000 km. The two fault codes can also occur in combination with rpm sensor faults (see also GI27.50-P-035556). The rpm sensor fault is not connected with this complaint.

Every Mercedes-Benz C350 model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.