What are the most common Mercedes-Benz EQS SUV problems?
According to Au7o's analysis of 220+ owner reports, the 2025 Mercedes-Benz EQS SUV has 7 documented issues. The most frequently reported are: Battery Management System Diagnostic Memory Overflow Opens HV Contactors (Turtle Mode), DC Fast-Charge Abort / DC Control Unit Failure at 150 kW+ Stations, 12V Auxiliary Battery Discharge Causing Dead Vehicle Despite Charged HV Pack. Of these, 3 are rated critical and should be addressed promptly.
Is the Mercedes-Benz EQS SUV reliable?
The 2025 Mercedes-Benz EQS SUV has 7 known issues documented across 220+ owner reports. 3 issues are rated critical: Battery Management System Diagnostic Memory Overflow Opens HV Contactors (Turtle Mode) and DC Fast-Charge Abort / DC Control Unit Failure at 150 kW+ Stations and 12V Auxiliary Battery Discharge Causing Dead Vehicle Despite Charged HV Pack. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Mercedes-Benz EQS SUV problems?
Repair costs for known Mercedes-Benz EQS SUV issues range from $0 to $6,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Battery Management System Diagnostic Memory Overflow Opens HV Contactors (Turtle Mode), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2023-2025 Mercedes-Benz EQS SUV Battery Management System Diagnostic Memory Overflow Opens HV Contactors (Turtle Mode)?
Other control units on the EVA2 bus continuously send diagnostic requests to the high-voltage battery management system. The BMS memory overflows, the module shuts down, and the HV contactors open - disconnecting the 108 kWh pack from the drive unit. The result is an instant loss… Repairs typically run $0-$0. Severity: high.
What is the 2023-2025 Mercedes-Benz EQS SUV DC Fast-Charge Abort / DC Control Unit Failure at 150 kW+ Stations?
Owners repeatedly report that the EQS SUV will charge normally on Level 1 and Level 2 AC but throws a charging fault and disconnects within seconds to minutes on high-power CCS DC stations (Electrify America, EVgo 150-350 kW), while sometimes still working on 50 kW units. The fai… Repairs typically run $0-$3,500. Severity: high.
What is the 2023-2025 Mercedes-Benz EQS SUV 12V Auxiliary Battery Discharge Causing Dead Vehicle Despite Charged HV Pack?
The EQS SUV's 12V auxiliary battery supports the entire low-voltage network - Hyperscreen, door handles, locks, and the contactors that connect the HV pack. On early X296 software the DC/DC converter did not reliably top up the 12V battery while the vehicle was parked, so cars le… Repairs typically run $350-$900. Severity: high.
What is the 2023-2025 Mercedes-Benz EQS SUV Rapid Rear Tire Wear on 21/22-Inch Wheels (11,000-15,000 Mile Tire Life)?
EQS SUV owners consistently report the factory tires - commonly Goodyear Eagle F1 - worn out at 11,000 to 15,000 miles, with the rear axle and especially the right rear wearing fastest. The drivers are the roughly 6,200 lb curb weight, instant motor torque, aggressive rear camber… Repairs typically run $1,200-$2,600. Severity: medium.
What is the 2023-2025 Mercedes-Benz EQS SUV MBUX Hyperscreen Blackout and Head Unit Reboot Loop?
EQS SUV owners report the 56-inch Hyperscreen going black at random - typically after the car has been driven for a while and heat-soaked - with the display sometimes only returning after the vehicle sits switched off for one to two hours. A milder variant is momentary blanking f… Repairs typically run $0-$6,000. Severity: medium.
What is the 2023-2025 Mercedes-Benz EQS SUV Intermittent Climate Control Failure from High-Voltage Heat Exchanger / Heat Pump Faults?
The EQS SUV's thermal management ties cabin heating and cooling to the HV circuit through a heat pump and high-voltage heat exchanger. The documented failure on the EQS SUV is A/C that works, then blows warm intermittently and cannot be reproduced on demand at the dealer. (Simila… Repairs typically run $800-$4,500. Severity: medium.
What is the 2023-2025 Mercedes-Benz EQS SUV Air Suspension Compressor Excessive Noise?
The AIRMATIC air suspension compressor on the EQS SUV produces an audible drone or buzzing noise during ride height adjustments, which is particularly noticeable in the cabin due to the quiet electric drivetrain. The compressor cycles more frequently than expected to maintain rid… Severity: low.
