SUV, gasoline, AWD/All-Wheel Drive, built in United States. Owner complaints on file from Apr 27, 2019 to Sep 2, 2026.
Owner complaints about this model year, by the year they were filed with NHTSA.
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 24V-207 | Mar 15, 2024 | 48-Volt ground connection under the passenger seat may not be secured properly, resulting in the ground connection overheating | Electrical system | 116,020 | Repair or modification |
| 22V-365 | May 20, 2022 | Error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system | Communication | 242,722 | Software update |
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
20 complaints on file, page 1 of 1.
The contact owns a 2019 Mercedes-Benz GLS450 4Matic. The contact stated that vehicle was taken to the dealer for routine service, and it was discovered that the U-joint on front driveshaft was fractured and needed to be replaced. The contact associated the failure with NHTSA Campaign Number: 26V216000 (Power Train); however, the VIN was not included in the recall. The failure mileage was approximately 56,000.
NHTSA complaint 11761543the vehicle suffered a sudden and catastrophic engine failure while being driven on the freeway at about 60mph. The engine seized and the vehicle lost propulsion creating a serious safety concern
NHTSA complaint 11759595The front vehicle hood keep saying it open but is lock keep getting a message saying is open I am afraid is might come out lock and cause me to an accident
NHTSA complaint 11745739I am reporting a serious safety defect in my 2019 Mercedes-Benz GLS450. My vehicle experienced low oil pressure warnings and engine warning lights, which were diagnosed as a faulty oil pump solenoid valve. The repair required removing major engine components, resulting in a cost of $5,000 that I paid personally. It is important to note that Mercedes-Benz updated the valve design in the following model year, indicating that the company was aware of a defect in the original design. This demonstrates that the failure is recurring and not isolated, creating a serious safety risk—low oil pressure can lead to catastrophic engine failure while driving, endangering the driver and passengers. I request that NHTSA: Document this as a potential safety defect. Investigate the prevalence of this issue. Consider initiating a recall or safety notice for affected GLS450 vehicles.
NHTSA complaint 11739507When I attempt to shift from park to to drive or reverse or even neutral the car wont respond. this has happened a couple of times in the last two months. I press on the brake in order to shift and it wont respond to any commands . I then have no choice but to turn off the car and then turn it back on. that usually works. this is unsafe if i was at an open parking lot or even on the street doing a U-turn and I don't turn right then having to reverse and the car doesn't respond. very scary stuff.
NHTSA complaint 11718210The panoramic sunroof spontaneously shattered while driving down the road. The glass blew out from the inside out. There didn't appear to be any issues with the sunroof before this. As far as safety, just the noise of the explosion was enough to surprise the driver causing a jerking of the steering wheel into the opposite lane of traffic which could have caused a head on collision. If the sunroof shade would have been open, the glass would have came down the drivers and passengers as they were going down the road. Saying this was distracting is an understatement. I called the local Mercedes dealership and was completely dismissed by them. They said it would have to be repaired by a glass company which is incorrect. The glass was replaced by the local collision center.
NHTSA complaint 11699347Shows an error on the dashboard: 3rd Row, Right Malfunction Consult Workshop
NHTSA complaint 11665988The contact owns a 2019 Mercedes-Benz GLS450. The contact stated upon starting the vehicle, the check engine warning light illuminated intermittently. The contact stated that the failure had become consistent. The vehicle was taken to the dealer, where it was diagnosed that the engine oil pump valve and the camshaft adjuster had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 91,000.
NHTSA complaint 11629311I have been showing an error "Active Curve System Malfunction" intermittently since I bought this vehicle from Mercedes dealership, and I've started seeing oil leak from reservoir. I've seen this is a recall from 2013 to 2017 model, but I'm unable to see this as a recall on 2019 model.
NHTSA complaint 11618802The contact owns a 2019 Mercedes-Benz GLS450. The contact stated that while operating the vehicle, the check engine warning light remained illuminated, and the vehicle was jerking and hesitating while attempting to accelerate. The vehicle was taken to the local dealer who diagnosed and determined that the oil pump and check valve were faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 38,000.
NHTSA complaint 116165919/9/24 after 5pm I'm driving my car and the check engine light came one. I have a small autel handy scanner always in my car. I checked it right away and gives me the code P06DA (OIL PUM SOLENOID OPEN CIRCUIT - ELECTRICAL ISSUE). I stop on the side for a quick check, no knocking noise from the engine and runs good. I checked on the website (Mercedes forums) and a lot of people had the same problem (lemon???). Most of them talking that thanks God the solenoid stuck on full open (higher pressure oil) so there's no damage to the engine. Repair cost around $5000!!!!! That problem must be taken seriously from Mercedes! Thank you
NHTSA complaint 11613641Vehicle triggered into limp mode while driving, Braking Assist Disabled, Traction Control Disable, Sound System Disabled. Sent to dealership for repairs. Dealer found water pooled in the passenger side footwell. Estimation 10-20k to fix vehicle. Matching the exact details of the recall issued against 2020-2021 Mercredes Benze GLS450. Water forms as a typical byproduct of a car’s air conditioning system and is diverted away from the car down to the ground through a drain hose. In the affected vehicles, the drain hose may be incorrectly installed, causing water to leak inside the cabin through the front passenger footwell. The component involved in this recall is the A/C drain hose with part number A1678323600. Recall risks Water entering the passenger compartment presents many risks to both the vehicle and the occupants. Rust could form from within the vehicle and the water can also potentially short out the electrical system. Apart from presenting an increased risk of fire, this can also cause the car’s electronic features to malfunction, which could affect the ability to unlock doors and call emergency services. The leak can also accidentally trigger the engine’s limp-home feature while driving, upping the probability of a crash. Warning signs Users may notice that the front footwell carpets have become wet under normal use, as well as misting on the windows.
NHTSA complaint 11597427Failure of driver side front axle CV assembly. Part #166-330-33-00 with 36,000 miles on the vehicle Noise was heard when driving, pulled over heard noise as moved car forward and made left turn. Car was towed to Highway Tire and Auto near our house on a Saturday morning. Car test driven on their lot and immediately identified as CV axle. Part was only available from Mercedes dealership, yet all the other axles ( non driver side) were available from several parts distributors. Seemed odd maybe indicating a lot of these were being replaced?? This axle failure while driving at highway speeds could have resulted in wheel lock up causing serious accident and injury. When contacting Mercedes they seemed more interested in telling me it wasn’t covered under warranty, and there was nothing they could do about it since I didn’t have the repair done at their shops…. I asked them if they thought it was normal for an axle to go out at 36,000 miles and they said no. I asked them if they thought it was concerning and potential safety issue. And they never gave me an answer. After about 20 phone calls and 4 emails was finally able to escalate it to Mercedes Corporate office and a lady there Andrea, indicated she was executive referral manager and she would check with their engineers. She called back next day and said since I didn’t get it repaired at Mercedes, and since last time it was in a Mercedes shop was 15 months earlier there was nothing they could do about it. She said they might have found leaking fluid etc and could have fixed it. I told her I personally saw it up on the lift and there was zero leaking fluid or indications of wear on the outside. The car had also just recently gotten new tires and passed state of NC vehicle inspection. She said she was sorry but best she could do was offer $400 credit toward a future service at any Mercedes dealership. I think this has potential for serious parts defect and consideration for safety recall
NHTSA complaint 11561518At first, the parking brake assist would appear when vehicle was put into park or when starting. We would have to release the parking brake each time. Then, the parking brake assist light would not go on, but the parking brake assist would engage and or be sticking while driving causing a burning smell and damage to the rear braking system including brake pads and calipers. The independent repair professional described this as being a very premature issue for this vehicle considering the age and mileage. The electronic parking brake actuators electric motors malfunctioned and failed causing resistance on the calipers. The car was undrivable and required us to obtain a rental car for several days.
NHTSA complaint 11549440Vehicle was damaged by a school bus hitting the rear passenger corner. It damaged the rear tail light, brake light, turn signal and backup warning sensors. Parts to repair the vehicle are not available for the past 4 months. I called multiple times and the dealer cannot provide a date when the parts will be available. The total cost of repairs is $3200.00. To avoid paying rental car fees that the school would have to pay, I’m driving a unrepaired car. The cost to rent a car would exceed the cost to repair the vehicle by 3-4 times the total repair cost. It is a law that car manufacturers have parts available to repair vehicles damaged by accidents. I would like NHTSA enforce the law.
NHTSA complaint 11528599Update Communication Module SIM Card Software - MBUSA ID: [XXX], NHTSA Recall ID: 22V365. I received the recall letter from MBUSA in July 2022. I took my car to a local dealership on 8 Aug 22 and they told me after approximately two hours they couldn't update/do OTA. They told me I would need to park my car outside to receive the update. Once I got home I checked the MBUSA & NHTSA recall sites and noticed this recall for my vehicle shows it as updated, but I knew the dealer hadn't accomplished it, because they said they didn't. I'm not sure who submitted it as updated on both websites. We have the MercedesMe Connect applications on our iPhones and it shows the status of our vehicle, allows remote starting, has anti-theft tracking as well as valet tracking and remote disabling capabilities. It also show the Over-the-Air (OTA) updates. It shows our vehicles LAST OTA as being 14 Oct 2021. I believe this software application shows current status of the OTA software and that this recall update on your website and MBUSA is incorrect. How do I go about getting this recall resolved. I can send you a screenshot of our MercedesMe Connect showing the current status of our vehicles OTA software. I've attached the screenshots of my MercedesMe Connect's OTA information. Hopefully nothing happens accident wise and the OTA not work...this would be a major liability for both MBUSA and NHTSA having faulty information in your database concerning this recall as being updated/corrected. If I don't hear from you all, I'll take this matter up with my auto insurer USAA. Thank you! Sincerely, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
NHTSA complaint 11497190The contact's client owns a 2019 Mercedes Ben GLS450. The contact stated that while the owner was driving at an undetermined speed, the vehicle began to smoke and caught fire. There were no warning indicator lights illuminated. There were no injuries or air bag deployment. A police report was filed. The fire department extinguished the fire. The vehicle was towed to an undisclosed location. The local dealer was contacted but the vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 31,415.
NHTSA complaint 11489772factory equiped jack lift failed, bearing and ring ejected and vehicle fall on the ground, contacted manufactory, and Mercedes indicated they probably can replace a new jack but no more action they will take, the vehicle has a gross weight about 6400lbs, and with air suspension, the vehicle will need to be lift higher than normal in order to replace tire, the jack lift is obviously not hold the pressue that make it a serious safety concern, Mercedes should look into it not just drop the ball.
NHTSA complaint 11488667The contact owns a 2019 Mercedes-Benz GLS450 equipped with Pirelli Tires, Tire Line: Scorpion Verde, Tire Size: 275/50/R20, DOT Number: UNFJN542. The contact stated that the driver's side front and rear tires were leaking air from the inner sidewall. The driver's side front and rear tires were replaced at a tire dealer but the failure recurred with the passenger's side rear tire and the tread separated. The tire dealer replaced the passenger's side rear tire. The manufacturer was made aware of the failure. The failure mileage was 34,000. Vin was not available. Consumer stated all 3 tire blew while driving on the highway, tires were bought Jan. 2022.
NHTSA complaint 11461312BACKUP SAFETY ALERT SYSTEM DESIGN IS INADEQUATE. EXTERIOR SENSORS ARE INSENSITIVE OR ERRATIC, WARNING BUZZER IS FAINT-TO-INAUDIBLE, ESPECIALLY IF THERE IS OTHER AMBIENT NOISE SUCH AS RADIO PLAYING, AND WARNING BUZZER SOUND LEVEL IS NOT ADJUSTABLE. WARNING LIGHTS THAT ARE COUPLED TO THE AUDIBLE ALERT ARE REMOTE FROM THE DRIVER, NOT VISIBLE WITHOUT TURNING DRIVER'S BODY AROUND 180 DEGREES, WHICH IS NOT POSSIBLE FOR MANY DRIVERS. SYSTEM SHOULD BE DESIGNED SO THAT WHEN THE CAR IS IN REVERSE GEAR AND IN MOTION ANY ENCROACHING PEDESTRIANS OR TRAFFIC OR OBSTACLES RESULT IN AN AUDIBLE WARNING COUPLED WITH WARNING LIGHTS THAT ARE VISIBLE IN THE DRIVER'S FIELD OF VIEW, WHICH WAS APPARENTLY THE INTENT OF THE DESIGNER. HOWEVER, THIS DESIGN AND ENGINEERING FALLS SHORT OF BEING EFFECTIVE, AS THE SENSORS AREN'T RELIABLE, THE BUZZER IS NOT LOUD ENOUGH, AND THE LIGHTS ARE NOT VISIBLE TO PEOPLE UNABLE TO TWIST THEIR BODIES AROUND TO LOOK DIRECTLY BACKWARD.
NHTSA complaint 11204094Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.