Mercedes Benz EQB 300 4MATIC electrical problems

ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

See Attached Letter For The Complaint

NHTSA complaint #11758466 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

See attached document for complaint.

NHTSA complaint #11752312 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

There is a recall associated with this model that causes catastrophic stoppage without any ability to drive. My vehicle VIN does not have a recall according to your site. Despite this, my vehicle catastrophically stopped multiple times. It was repaired at least three times and still stopped in the middle of the highway. My partner and I were stopped on I-85S with no ability to move, honk, put on hazards. Cars zoomed past at full speed. I called 911 as we braced for impact. We are lucky to be alive and now suffer from severe trauma. They eventually closed the entire highway and dragged the vehicle to the shoulder almost 30 min later. Mbusa was aware of this defect before rejecting my lemon law claim, but my vehicle was not included apparently. I feel more investigation is needed because it seems very likely my vehicle should be included in the recall. I appreciate your attention to this matter.

NHTSA complaint #11751342 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The contact owns a 2023 Mercedes-Benz EQB 300 4Matic. The contact received notification of NHTSA Campaign Number: 26V073000 (Electrical System); however, the part to do the recall repair was not yet available. The dealer was contacted. The contact was concerned that the manufacturer provided limited safety risk information and that the vehicle could catch on fire during a crash. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was contacted several times about the issue. The contact had not experienced a failure.

NHTSA complaint #11750608 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

See attached document for complaint.

NHTSA complaint #11747352 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

I am submitting this complaint regarding a serious safety issue involving my vehicle. For an extended period of time, this vehicle has experienced recurring starting failures. On multiple occasions, the vehicle would not start, requiring service visits to the dealership. Despite repeated repair attempts, the dealership was unable to identify the root cause of the problem and typically performed only software updates. I was repeatedly informed that no specific defect could be found.Recently, the issue escalated into a much more dangerous event. While driving, the engine suddenly shut down without warning. The loss of engine power occurred during normal vehicle operation and created a significant safety hazard. This unexpected engine shutdown could have resulted in a collision, serious injury, or loss of vehicle control, particularly if it had occurred in heavy traffic or at highway speeds.What is especially concerning is that this incident appears to be related to the same unresolved condition that has resulted in multiple prior service visits. The vehicle has a documented history of similar symptoms, yet the underlying cause has never been identified or permanently corrected.Based on the repeated failures, unsuccessful repair attempts, and the recent engine shutdown while driving, I am concerned that this vehicle may have a safety-related defect affecting its reliability and safe operation. I am submitting this complaint so that the issue can be investigated and evaluated for potential broader safety implications.The vehicle continues to cause concern whenever it is driven because there is no assurance that the engine will not shut down again unexpectedly.

NHTSA complaint #11744337 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

I am reporting a significant safety concern regarding my 2023 Mercedes-Benz EQB. While my specific VIN has not been included in the current high-voltage battery fire risk recall (NHTSA Campaign 26V073000), my vehicle is a 2023 model that shares the identical high-voltage battery architecture, manufacturing window, and platform design as the approximately 12,000 EQB vehicles officially recalled due to an internal defect that causes sudden, unpredictable battery fires. As a vehicle owner, I am now experiencing deep, well-founded anxiety regarding the safety of this vehicle. Due to the proximity of my vehicle's design to those definitively identified as defective, I have lost confidence in the vehicle's safe operation. I can no longer park this vehicle in an enclosed garage or charge it with confidence, effectively limiting my ability to utilize the vehicle as intended. I am filing this report to formally document my concern that this safety defect may be more widespread than the current recall population suggests, posing an unreasonable risk to the safety of myself and the public.

NHTSA complaint #11742099 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The contact owns a 2022 Mercedes-Benz EQB 300. The contact received notification of NHTSA Campaign Number 26V073000 (Electrical System); however, the part to do the recall repair was not yet available. The local dealer was contacted; however the vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. 

NHTSA complaint #11741759 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

This urgent safety issue with the high voltage battery on the 2022 Mercedes EQB has been known to Mercedes since at least July 2025. As of May 15, mercedes tells me I will have a repair scheduled by December 30, 2026. They offer no explanation for the delay. This is unreasonable and unacceptable. I am requesting that the NHSTA inform Mercedes that they must do better to eliminate this known fire hazard, and inform me of the penalties you can impose on Meercedes if they do not complete this recall in a timely fashion.

NHTSA complaint #11738333 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

Since I purchased this electric vehicle, phone conversations that I place through the car have been broadcast on the external speaker. I brought this to the dealership, they acknowledged the problem, but told me they couldn't help because they didn't have another EQB to compare it to. They told me to contact Mercedes customer service. I contacted them by email, and I was repeatedly told (incorrectly) that my vehicle does not have an external speaker. They eventually ignored me. This is both a safety issue and a privacy issue. Broadcasting my phone calls to the public is a massive invasion of privacy. Secondarily, when the external speaker is playing a phone call, I assume it is not playing the required noise intended to warn pedestrians that an EV is approaching. As best as I can tell, this is a MBUX software defect that is causing the Acoustic Vehicle Alerting System (AVAS) to malfunction. I need this fixed for both safety and usability, and I have been shocked that Mercedes hasn't done a better job trying to address this problem. Additionally, a couple weeks ago, my entire screen (speedometer, maps, etc) went blank while driving. I believe there was an electric "pop" right as this happened. The screen rebooted and came back after about a minute, but then it happened again on the same drive within a couple minutes. Those are the only two times this has happened, but it was unnerving. I believe other models have been recalled for a nearly identical problem, but my vehicle was not included in the recall.I have not contacted Mercedes about the screen based on the poor response I received after having the phone issue. In summary, this is a safety issue that the Mercedes dealership acknowledged but has not and will not fix. They were able to reproduce the issue, there are no warning messages, and the vehicle is available for inspection. I would appreciate any help I can get in solving the phone problem. I would also love to know if the screen issue requires followup.

NHTSA complaint #11738301 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

Compounded Electrical Failures In addition to the battery defect, this specific vehicle has exhibited recurring electrical malfunctions, including: Total failure of the backup cameras and parking sensors. Intermittent failure of the HVAC system (Air Conditioning), critical in the Florida climate. Erratic Autonomous Braking: The vehicle has repeatedly engaged emergency braking while reversing without cause, nearly resulting in multiple collisions. Diminished Utility and Breach of Lease Expectations The "interim" instructions provided by Mercedes-Benz have fundamentally altered the vehicle’s functionality from the terms established at the start of my lease: Charge Limitation: The "MUST NOT exceed 80%" mandate reduces the vehicle's range and utility, failing to meet the deliverable of a fully functional EV. Parking Restrictions: The requirement to park outside for fear of a garage fire is an unreasonable burden that violates the expected use of a luxury vehicle. Failure to Remedy within a Reasonable Time (49 U.S.C. § 30120) Under the National Traffic and Motor Vehicle Safety Act, specifically 49 U.S.C. § 30120(c)(2), a manufacturer’s failure to remedy a defect within 60 days of a vehicle being presented or a notice being issued constitutes prima facie evidence of a failure to remedy within a reasonable time. The notice for Recall 26V073 was issued in March 2026. As of today, May 11, 2026, more than 60 days have passed without an actionable remedy or a definitive timeline for repair. There have been ZERO warnings or indications of the above mentioned.

NHTSA complaint #11736984 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

I received an official recall notice from Mercedes-Benz regarding my EQB due to a defect involving the high-voltage battery system. According to the recall notice, the battery may experience an internal failure that could potentially result in a fire while the vehicle is either parked or being driven. Mercedes-Benz has also advised owners to limit charging and park the vehicle outside due to the severity of the safety risk. At this time, Mercedes-Benz has not provided a permanent repair remedy or battery replacement. Because I no longer feel safe driving or storing the vehicle, I have left it at the dealership and am currently using a loaner vehicle while attempting to reach a fair and reasonable resolution with Mercedes-Benz. Given the serious safety concerns associated with this recall and the lack of an available repair, I do not believe the current offer being presented by Mercedes-Benz adequately resolves the situation. During my first conversation with Mercedes, I was clearly told that I had two options: trade into another lease or have Mercedes repurchase the vehicle at no cost to me. At no point during that initial conversation was I told that repurchase was unlikely or subject to higher-level approval. $7,500 does not address the core issue, which is that I am still left in a lease for a vehicle I do not feel safe driving or storing. This is fundamentally a safety and usability issue, not simply a financial inconvenience. I am simply asking Mercedes to stand behind its product and provide a reasonable resolution for a leased vehicle that has been deemed subject to a serious fire-risk recall without a current repair remedy.

NHTSA complaint #11737006 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The contact owns a 2023 Mercedes-Benz EQB 300. The contact received a recall notification NHTSA Campaign Number: 26V073000 (Electrical System) however the parts were unavailable. The dealer was contacted, the contact was informed that the parts were unavailable. The manufacturer was contacted, and a case was filed. The contact was informed that the parts were not available. In addition, the contact was informed that the parts would not become available until 2027. The contact had not experienced any failure regarding the unrepaired recall repair.

NHTSA complaint #11735639 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

Dear NHTSA Safety Team, I am submitting a formal safety-related complaint regarding my 2023 Mercedes-Benz EQB 250, which is currently under an active high-voltage battery recall. The recall imposes significant safety restrictions, including an 80% charging limit, a requirement to park the vehicle outside due to fire risk, and the inability to safely charge the vehicle at home. Additionally, I have been advised by my dealership that DC fast charging should not be used, further limiting the vehicle’s usability. Mercedes-Benz has informed me that the remedy requires a full high-voltage battery replacement, which may take many months (until at least December). In the meantime, the vehicle is not usable as a daily vehicle due to the combined safety and charging restrictions. I have attempted to work with Mercedes-Benz USA to obtain an appropriate remedy for this loss of use, but I have been told that only minimal options are available, and my request for executive-level review has been denied. I am requesting NHTSA’s assistance in reviewing this matter as a safety-related loss-of-use issue. The current restrictions materially affect my ability to safely operate and maintain the vehicle. Thank you for your attention to this matter. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11734681 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

Mercedes-Benz is taking 6 to 8 months to replace the high-voltage battery due to the recall mentioned below. Even after an 8-month wait, no guaranteed ETA is provided to resolve the issue. Manufacturer Recall Number2026020004 NHTSA Recall Number26V073 Recall StatusRecall Incomplete, remedy not yet available Summary Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year ("MY") 2022-2024 EQB (243 platform) vehicles, a risk of fire of the high-voltage battery (EB330) cannot be ruled out. Due to the combination of certain production and use conditions, an internal short circuit of a battery cell in the high-voltage battery, might lead to a thermal event. Subsequently, an increased risk of a fire cannot be ruled out An authorized Mercedes-Benz dealer will replace the high voltage battery. Customers will be instructed to charge their vehicle's battery to a maximum of 80% state of charge until the remedy is performed.Out of an abundance of caution, customers are additionally advised to park their vehicles outside. Safety Risk Due to the combination of certain production and use conditions, an internal short circuit of a battery cell in the high-voltage battery, might lead to a thermal event. Subsequently, an increased risk of a fire cannot be ruled out Remedy An authorized Mercedes-Benz dealer will replace the high voltage battery. Customers will be instructed to charge their vehicle's battery to a maximum of 80% state of charge until the remedy is performed.Out of an abundance of caution, customers are additionally advised to park their vehicles outside.

NHTSA complaint #11732935 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The battery has a fire hazard

NHTSA complaint #11732728 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

Pertaining to the recall of the 2023 Mercedes Benz EQB300. There is no resolution or remedy for this recall. Currently this is my only means of transportation and I do not feel safe at all driving it. I contacted Mercedes Benz for a buyback or loaner. No one senna to be concerned. The fire risk puts me and my children life in danger. I rent my house and have renter’s insurance but a vehicle fire will not be covered if damage occurs

NHTSA complaint #11731113 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

I am writing to formally notify the National Highway Traffic Safety Administration (NHTSA) that Mercedes-Benz USA has failed to remedy a known safety defect within a reasonable amount of time, pursuant to 49 U.S.C. § 30120. This notification is submitted in relation to the recall issued under the National Traffic and Motor Vehicle Safety Act regarding the high-voltage battery cells in the 2023 EQB. The manufacturer has acknowledged that an internal short circuit within the battery cells may lead to a vehicle fire while driving or parked. Despite this, a timely and effective remedy has not been provided, leaving me to manage the following severe burdens: • Safety and Psychological Distress: Every time I operate this vehicle, I experience significant anxiety. My primary concern is the safety of my grandchildren; I am constantly haunted by the question of whether I could safely extricate them from the vehicle should it ignite while in motion. • Property and Liability Concerns: I am currently forced to park the vehicle away from other cars and structures to mitigate the risk of a conflagration. I am deeply concerned about my legal and financial obligations should the vehicle ignite and cause damage to third-party property or result in personal injury. • Diminished Performance: The vehicle currently exhibits a decreased mileage range, failing to meet the performance specifications promised at the time of lease. • Breach of Lease Terms: I am required to make full monthly lease payments as per my agreement. However, Mercedes-Benz is failing to uphold their portion of the contract by providing a vehicle that is safe, functional, and fit for its intended purpose. I request that the NHTSA investigate Mercedes-Benz’s delay in providing a definitive remedy and hold the manufacturer accountable for the loss of use and the inherent dangers posed by this defect. A car that "potentially could ignite into flames" at any moment is not a "remedied" vehicle under the law.

NHTSA complaint #11730623 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The high-voltage battery cells in my vehicle, supplied by Farasis Energy, are prone to internal short circuits that can cause thermal runaway and vehicle fire. This defect poses a serious risk of fire while the vehicle is parked or in operation. Mercedes-Benz USA has acknowledged this defect through three separate recall campaigns (25V050, 25V894, and 26V073). The first two remedies — software updates — failed to prevent fires, including post-repair fires reported in Europe. Mercedes-Benz subsequently committed to full battery replacement as the only effective fix, but has not made repair scheduling available until approximately December 30, 2026. In the interim, Mercedes-Benz has instructed owners to: (1) park and charge exclusively outdoors, (2) limit charging to 80% of battery capacity. These extraordinary restrictions confirm that the vehicle remains a fire risk and is currently unfit for safe normal use.

NHTSA complaint #11730676 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The contact owns a 2023 Mercedes-Benz EQB 300 4Matic. The contact received a recall notification, NHTSA Campaign Number: 26V073000 (Electrical System); however, the parts were unavailable. The dealer was contacted, and the contact was informed that parts would not be available until December 2026. In addition, the contact stated that the vehicle was a fire risk. The manufacturer was contacted, but no assistance was provided. The contact had not experienced a failure.

NHTSA complaint #11730443 — an unverified report by a vehicle owner.