2022 Mercedes-Benz GLS 450 4MATIC

I have been receiving errors that visibility is reduced. Lane departure system is not working and car has brake suddenly in moderate traffic despite not being close to vehicle ahead of me.

NHTSA ID

11738195

Incident

May 14, 2026

The contact owns a 2022 Mercedes-Benz GLS450. The contact stated that while driving at an undisclosed speed, there was an abnormally loud sound coming from the roof of the vehicle. The vehicle was pulled over to the shoulder lane and the contact discovered that the sunroof glass had shattered. No warning lights were illuminated. A dealer was contacted, and the dealer suggested that the insurance provider be contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 50,000.

NHTSA ID

11731633

Incident

Apr 16, 2026

Mileage

50,000 mi

Car has been auto braking even though there is nothing in front of the car. This is extremely dangerous and could lead to serious rear end collisions. There are many similar complaints on online forums and Mercedes (and their lawyers) do nothing. Link to video: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11724974

Incident

Mar 17, 2026

The vehicle caught fire while parked and running in the driveway of my home. There were no modifications, no accident, and no external cause. The fire occurred without warning and posed a serious safety risk to occupants and property. The vehicle was under manufacturer warranty at the time of the incident. The fire caused damages to my house too. There were no warning lamps or messages. Benz has not done an investigation yet.

NHTSA ID

11711487

Incident

Jan 4, 2026

The car has on 5+ occasions had the collision avoidance system shut down (photos of dash showing this are available and have been shared with the dealer). There were no weather incident at the time. Lane following........ same type of thing also shared with dealer. Most disturbing is on multiple occasions, with the speed control engaged driving on the interstate at 65 to 70 mph, the speed limit indicator on the dash changed to 40 (no speed limit change) and the car went into hard breaking mode until I disengaged the system. (also reported to dealer) Each time the car went into the shop, they "checked the systems" and found no faults and made no repair except on one occasion, they "flashed" the software. The car went into the dealer with 67,000 miles on June 3, 2025 with a promise that they would get to the bottom of this issue. The car was returned after a full "testing" and for good measure, one software update and the replacement of a forward facing camera lens. For each item submitted, they reported no history of any faults and found nothing wrong with the car. The car was returned [XXX] at [XXX]. On [XXX] going 60 mph in traffic, the speed limit indicator jumped to 80 mph and the car immediately and rapidly accelerated until I shut the system down. I took a photo of the dash showing the 80 MPH indication. There are NO locations in Virginia that have an 80 mph speed limit. Also, on several occasions, an alert comes up the the car has been in an accident..... when parked in my garage and a bogus date. Other software glitches happen on a periodic basis INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11665997

Incident

Jun 6, 2025

Vehicle lost power while driving on a busy freeway and came to a complete stop and would not restart resulting in it being struck by a vehicle in the rear. More information available in the collision center pre estimate scan and full estimate.

NHTSA ID

11632849

Incident

Nov 29, 2024

While backing out of steep driveway, the car computer screen blinked saying "updating" then screen went blank, lost power, I could not brake. We have a row of trees at the back of our driveway that stopped the car ( with damage) or else we would have rolled into our neighbors basement all. Tree limbs poked a hole in bumper, cracked left tail light, and damaged the back hatch. Mercedes is saying User fault. I have been driving for 45 years without a ticket, wreck or causing an accident, and I am not a liar. If this blanking of the computer screen happened on a highway , a whole family could be killed, or caused a MULTI-car accident. I am concerned about OTHERS welfare. sent 8/17/2024

NHTSA ID

11609145

Incident

Mar 6, 2024

As I approached a red light and removed my foot from the gas pedal to brake, my dashboard displayed several alarming messages: “Active Brake Assist Functions Limited See Owner's Manual,” “Active Blind Spot Assist Inoperative,” “To Deselect P or N Depress Brake and Start Engine,” and “Traction Control Inoperative See Owner's Manual.” Subsequently, all dashboard lights illuminated, the engine turned off, and the car shifted into neutral from drive, preventing me from restarting it. Despite turning on my hazard lights, I was stuck in the middle lane while the light turned green. My husband recorded the event on his phone. Eventually, the car restarted, and we continued to his doctor’s appointment. After the appointment, which lasted approximately 45 minutes, I noticed the check engine light was still on when we got into the car. Despite this, I drove home and then to the dealership, where I explained the situation and showed the video to the service writer. Later that day, our service writer informed me via text that there were “No faults in system that would indicate issue that would cause vehicle stalling” and suggested a transmission update recall might be related. I requested the code for the check engine light but was told “no code stored for check engine light.” Given these circumstances, I have several pressing concerns: My car turned off in the middle of a busy street and wouldn’t restart immediately, creating a hazardous situation. This incident poses a significant safety risk. What if this had occurred on a freeway or my daughters were driving my car? The dealership's assertion that no issues were found is hard to believe given the clear malfunctions and present check engine light. Mercedes-Benz's response has not addressed my concerns about the vehicle's safety. A car should not "just turn off while actively driving." I am not at all comfortable with the dealership’s statement that “sometimes this can just happen.” This should NEVER happen

NHTSA ID

11592527

Incident

Jun 4, 2024

This NCU replaces the prior NCU issued on May 15, 2025, and contains additional MY 2023 and MY 2024 vehicles which are highlighted below. In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (“MBUSA”) is extending the warranty coverage on the Diagnostic Module for Tank Leakage detection (DMTL) in certain Model Year (“MY”) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 10 years/120,000 miles (vehicles certified as LEV II) and 15 years/150,000 miles (vehicles certified as LEV III), whichever occurs first, for the following condition: •Under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code (DTC) entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp (‘MIL’).

Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to the latest SW version. 290, 118, 243, 247: Software is still in development. This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles. The vehicle can be released back to the customer.

Complaint Noise from front end attributable to steering gear. Cause During diagnostics of a front end noise, workshop is under the impression the noise is coming from the steering gear. Remedy Workshop diagnostics point to the steering gear as the root cause of the noise and the below LI's and items have been ruled out. • LI46.35-P-067339 - "Rattling or Humming Noise When Steering" • LI46.35-P-071461 - "Check Tie Rod Outer Joint of Steering Gear" • LI46.10-P-077391 - "Knocking Noise In The Area Of The Steering Gear or Steering Column Tube When Braking Or Moving Off; The Steering Wheel Can Also Be Felt To "Crack"" • If the noise is described as "clacking" or "knocking" and the thrust element in the steering rack has NOT been checked yet, please perform a check and subsequent adjustment, if necessary, as detailed in AR46.20-P-0601ME. If the above has been completed and the noise is still present, please continue with the below: • Video underneath the vehicle with clearly audible noise. • Video inside the vehicle with clearly audible noise. • Vehicle checked for history of collisions. • List of other checked components (suspension, drive line components, wheel bearings, etc...). • Check integrity of dust boots and dust boot clamps. Ensure no water has entered into the steering rack. • Along with the audible noise, does the feel/noise change through only a certain part of the steering arc sweep? • Provide the thrust element before and after readings. If the above is completed and no findings are noted, please open a TIPS case to the Body/Chassis/Entertainment inbox.

Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to cracking of the microweld between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened. See also LI33.20-P-078406 Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove side shafts 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") with Molykote and leave to dry for "one hour" in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir it or shake it thoroughly for (at least 1 minute).

Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("- -"). • Flashing when current vehicle speed is under speed limit. • Flashing between US speed limit symbol and European speed limit symbol. NOTE: • Verify that the concern falls under one of the attachment videos. If not, then it is outside of the scope of this LI. • This also does not cover "Traffic Sign Inoperative" messages on the instrument cluster. Cause There are two identified reasons for this concern: 1. Country code information stored incorrectly at a particular geographic latitude range. 2. Incorrect reference data when the vehicle is started and a GPS signal is not immediately available. Remedy Do not replace parts. Please open a TIPS case to the Body/Chassis/Entertainment inbox but read the below carefully: • The vehicle must be exhibiting the concern as shown in the attachment videos. • The vehicle DOES NOT need to be at the dealer, nor does it need to be brought into the dealership. • If the geographic location is known, it is very important that it is provided. • Provide any pictures or videos, if available. A new software for the head unit is scheduled for tentative release in Q3 2026.

Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a new station change request is triggered, a temporary glitch is causing the Head Unit application to fail to overwrite the previous request. This glitch is causing the cover art mismatch in the Radio application. Remedy Please do not replace any parts. The E505.9 software is released and available in XENTRY Q3 2026.