2014 Mercedes-Benz GL-Class

I recently purchased my Mercedes from Auto Boutique in Pearland, Texas (713) 352-0777. 1.The vehicle's air suspension system is constantly grinding, and moving/adjusting while being driven. It feels like the vehicles fame is off balance. 2. The back camera system does not work unless the radio is turned on; which is very alarming not to mention dangerous. 3. All the tires are registering improper inflation errors even though no air has been added or removed. I took the vehicle back to the place of origin; but they are not Mercedes Certified to address the issues. I am terrified to drive the vehicle, and it stays parked in the garage

On this Engine 166 model, I experience noise when Idling and when driving, coming from Engine with no code to indicate what is the problem of the car. This create the heat of the Engine to go up than normal and make the fan to run at high speed. When I call dealer, they told me its common problem on these Engine 166, and I need new Engine. I wanted to get second opinion from different Dealership and I got same answer, its common problems and I need new Engine or to Rebuild. I went online and I ask few people with same car Make, model and year, and the have same problems. My concern is only Dealer knows what is the issue but they don't want to inform Consumer what is the problem, instead they tell Consumer to replace the Engine, We don't how bad it is for safety. The problems it cannot be diagnosed because it doesn't produce any codes to indicate the problem. The noise continue until you turn off the Engine

The contact owns a 2014 Mercedes-Benz GL550. The contact stated that the check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed with leaky exhaust valves. The dealer determined that the exhaust valves needed to be replaced. The vehicle was taken to an independent mechanic, where a similar assessment was made. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered under TSB Number: 10233794. The manufacturer referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 104,000.

Leaky exhaust valves

It has makes sound noise and timing chain tension is made very poor not safety , also warming blibd spot frozen not working, display electric poor damage byself tomve fix timing dealer wants 15,000$ to be fix more then value of the suv

The contact owns a 2014 Mercedes-Benz GL450. The contact stated that while driving 65 MPH, the vehicle stalled. The check engine warning light was illuminated. The vehicle was able to be driven to the residence. The vehicle was towed to the dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was then towed to an independent mechanic, who also determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 108,000.

There is a recall on some of the make & models of my truck with different years but, my truck has been having the same issue & I believe that myself & my family may be at risk. The recall states that if the oil level in the ACS reservoir is below the minimum level, the oil may foam & leak out of the vent holes in the reservoir cap. The leaking of oil in the presence of ignition source can increase the risk of fire. I have been having to add two quarts of oil to my car every month for almost a year & there has been no oil in my driveway at all. The oil is going somewhere & I would like for my truck to be put on the recall list & have this issue addressed. My brakes also seem to have an unexplainable issue. Most times they're perfect but, sometimes they vibrate very hard when stopping no matter how fast or slow I'm going at the time. When I get them checked, I'm told that they're fine. I read a recall about the brakes as well.

Car got a check engine for failed turbochargers at 71000 miles. Mercedes refused to acknowledge and get the problem addressed.

Our vehicles computerized self-diagnostic system (OBD) registered faults.

Water has accumulated into the spare wheel well twice causing my ad blue module to be submerged in water, making the system faulty, which then disables the car for use. I have a vehicle that can not start and a repair bill of over 20,000 due to the water accumulation issue. There is a separate recall on other models for this exact problem. This model needs to be included as well.

Tapping noise developed in the engine, after dealership inspection using borescope, scored cylinder walls were found, resulting to engine replacement. Please see: Lena Jamil, et al. v. Mercedes-Benz USA, LLC (Case No: 2:22-cv-08130-FLA-AFM)

There were numerous Engine Oil Leak Recalls by Mercedes-Benz. There was a recent recalls announced in 2023, however, my vehicle 2014 GL450 with now about 50K miles, was not included in the list. Since there have been engine oil leaks problem reported and recalls, I'd like to report my car engine oil leaks problem too. It seems that the engine oil leaks problem is a "design" issue and across many car models and years made by Mercedes-Benz. With that said, it make safety sense to have the recalls extended to those cars with engine oil leaks problem reported. Below is information from dealer diagnostic report on engine oil leaks problem, "Valve Cover Re-seal: FRONT TIMING COVERS RECOMMENDED RESEAL SIPING OIL BOTH SIDES Item Description During a vale cover reseal, the valve cover is scraped and cleaned of any old residue, before a layer of silicone sealant is applied to the cover and then reattached to the head of the engine. Reason If not resealed or replaced, the valve cover will leak oil resulting in a burning smell coming from the vehicle’s engine. A loss of oil over time can result in harmful damage of the engine's internal components."

Front drivers side (Front Left) Aluminum wheel rim is cracked and will not hold tire pressure. We loose about 10 psi per day because of it. Now we have to replace this rim at significant cost. However, that's not the main issue. The main issue is whether this is a manufacturing defect that has put our lives at risk since 2014 (bought it brand new) until now in 2023 - over 9 years. The tire dealer Firestone discovered the crack and let us know. Yes, available for inspection. Yes, safety has been put at risk. Yes, confirmed by local Firestone Tire near us. Insurance may inspect it, we are calling them tomorrow as they are closed now. Tire pressure light went on, and has been on for awhile. But who would have thought to inspect rim, it is steel, and should not have cracked. Friends of mine say that it is possibly an OEM defect as Aluminum cast wheels should not do this. This car has never been in a moderate or serious crash. Fender benders sure, but nothing involving the tires.

The contact owns a 2014 Mercedes-Benz GL350. The contact stated that while inspecting the vehicle, there was oil leaking underneath the vehicle. Additionally, the check engine warning light was illuminated while operating the vehicle. The vehicle was taken to the local mechanic who diagnosed the vehicle and determined that the oil cooler seals were faulty and needed to be replaced. The seals were replaced, and the vehicle was repaired. The vehicle was later taken to the local dealer for transmission failure. The manufacturer was notified of the failure. The failure mileage was 140,000.

The contact owns a 2014 Mercedes-Benz GL550. The contact stated while driving at an undisclosed speed, the steering wheel seized, and the vehicle lost motive power. The check engine and malfunction PP0 warning lights illuminated. The contact was able to steer the vehicle to the shoulder of the roadway. The contact stated that an independent mechanic facility was nearby, so the mechanic and the contact pushed the vehicle into the shop. The vehicle was diagnosed with failed cam shaft gear and lifters. The contact was informed that the cam shaft gear and lifters needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had been taken to the dealer previously because of an abnormal sound however, the mechanic was unable to duplicate the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

After picking up children from school, I was driving out of the parking lot down a slow-speed arterial road (35 mph posted speed limit). Roughly 30 seconds after reaching the posted speed limit we heard a loud bang (like a gunshot) and immediately pulled over. The middle section of the panoramic sunroof had shattered. Upon examination on the side of the road there was no apparent impact spot or item in the roadway that would have indicated that particular section of the roof had been struck by anything (no rock, branch, brick, etc), nor were there any other vehicles in the vicinity that might have kicked up an object to hit the roof and nothing else. The sunroof appears to have spontaneously shattered without warning. The temperature outside was moderate (roughly 60 degrees) and the car had been driven earlier in the day without incident. A police report was filed for potential vandalism and I'm currently waiting for the insurance company to contact me to discuss and inspect.

' '['? /The right front headlight was replaced (after receiving a headlight warning) approximately about a year after the warranty expired. The dealership claimed this was due to moisture in the headlight. In August 2021, the left front headlight showed to be having issues with the same error message. Upon further inspection, the mechanic noticed that it was not moisture in the headlight that was causing the short, but an oily substance. The mechanic believes that there might be a bushing in the headlight that might be melting/breaking down due to the heat. This is causing the headlight to short and require a $3500 replacement

Oil leaking and wicking into camshaft position sensors, camshaft magnets, O2 sensors, engine wiring harness and ultimately, the ECU is destroying all electronic components connected to the engine causing misfiring and seizing. The issue is quite prevalent via internet research as potentially thousands of owners with my engine (M278) all experience the same issue. Mercedes Benz advises a $11,000 temporary fix by replacing all engine electronic components but the problem will occur again since the root cause of the oil leak is unknown. Be advised that this is NOT a normal wear and tear issue. This is a design flaw of the engine that placed these components in locations predisposed to contact with engine oil. The root cause of the oil leak is unknown and even Mercedes Benz can not tell why the oil is leaking on these components. If this issue is so prevalent with thousands of owners with the M278 engine in the GL450's, as evidenced by internet searches via Mercedes Benz fan sites, why has no service bulletin or recall been instituted? I am sure your agency can discover numerous examples of this same issue by researching service tickets from Mercedes Benz service centers nation wide. An $11,000 fix is not routine maintenance and Mercedes Benz should be made to fix this prevalent issue via a recall or a service bulletin.

The contact owns a 2014 Mercedes-Benz GL450. The contact stated while the vehicle was stationary, she noticed moisture inside the vehicle. The contact stated that the vehicle filled up with water while it was raining. The contact took the vehicle to an independent mechanic, who stated that the rear hatch was faulty and allowed water to enter the vehicle, but no leaks were found. The independent mechanic had to replace the rubber casing on the rear door hatch, the electrical wiring, and replace the floor carpet. The vehicle was repaired. The contact called the local dealer and made them aware of the failure. The manufacturer had not been informed of the failure. The failure mileage was 124,315.

Oil leaking and wicking into camshaft position sensors, camshaft magnets, O2 sensors, engine wiring harness and ultimately, the ECU is destroying all electronic components connected to the engine causing misfiring and seizing. The issue is quite prevalent via internet research as potentially thousands of owners all experience the same issue. Our local Mercedes Benz dealer indicated this issue "just popped up" immediately outside the warranty period (1 yr) for our used purchase, and would require a replacement of the camshaft, sensors, magnets, and wiring harness to the tune of $14,000. This is a design flaw of the engine that placed these components in locations predisposed to contact with engine oil. The root cause of the oil leak is unknown and even Mercedes Benz can not tell why the oil is leaking on these components. If this issue is so prevalent with thousands of owners with the GL450's, as evidenced by internet searches via Mercedes Benz fan sites, why has no service bulletin or recall been instituted? The overall issue is starting to cause issues with the safety features of the vehicle as well, with alerts (driveline assist, etc) either misfiring or not going off at all.