According to Au7o's analysis of 2,260+ owner reports, the 2025 Mercedes-Benz EQS has 3 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is Significant Range Degradation in Cold Weather with 1,200 owner reports. Across all issues, repair costs range from $150 to $500. DIY maintenance guides at au7o.io.
On the 2022-2025 Mercedes-Benz EQS Electric, the EQS experiences parasitic 12V battery drain when parked for extended periods, preventing the car from waking up or responding to the key fob. Despite having a massive high-voltage battery, the 12V system powers critical wake-up circuits and can discharge in as little as 7-10 days of inactivity.
Install the latest OTA software update which improves 12V battery management. If the car will be parked for extended periods, use a 12V trickle charger connected to the auxiliary battery. Mercedes dealers can test for excessive parasitic draw from modules failing to enter sleep mode.
What Owners Are Using
Parts and tips from 750+ owners who fixed this issue
TipIf you park the EQS for more than a week, connect a CTEK 12V trickle charger. The 12V battery is in the trunk — access it via the right-side trunk panel.
High Confidence750 reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community Reported
1,200 owners
On the 2022-2025 Mercedes-Benz EQS Electric, eQS owners report range drops of 30-40% in temperatures below 32°F, significantly exceeding the typical 15-20% cold-weather penalty seen in other EVs. The large battery and HVAC system draw heavily on available energy, and the heat pump system underperforms in extreme cold.
Battery preconditioning takes longer than expected
Reduced charging speed in cold conditions
HVAC system consumes excessive energy
How to Fix
Precondition the battery and cabin while connected to a charger before departing. Use seat heaters instead of cabin heat to conserve range. A software update from Mercedes improves heat pump efficiency in cold weather — ensure the latest OTA update is installed.
What Owners Are Using
Parts and tips from 1,200+ owners who fixed this issue
TipAlways precondition while plugged in. Set departure time in MBUX so the car warms the battery and cabin on grid power. This alone recovers 10-15% of winter range.
High Confidence1,200 reportsLast reported by owners Feb 2026Reviewed Mar 2026
Community Reported
310 owners
On the 2022-2025 Mercedes-Benz EQS Electric, the optional rear-axle steering system on the EQS can lose calibration, triggering a steering fault warning and defaulting to a reduced turning circle. The issue is typically caused by a software glitch in the rear steering control module rather than a mechanical failure.
Visit a Mercedes dealer for rear-axle steering recalibration using XENTRY. A software update for the rear steering ECU addresses the calibration drift. If the issue recurs after the update, the rear steering actuator motor may need replacement.
What Owners Are Using
Parts and tips from 310+ owners who fixed this issue
TipMost rear steering faults are software-related. A dealer recalibration fixes it in 90% of cases. If it keeps coming back, push for actuator replacement under warranty.
What are the most common Mercedes-Benz EQS problems?
According to Au7o's analysis of 2,260+ owner reports, the 2025-2025 Mercedes-Benz EQS has 3 documented issues. The most frequently reported are: 12V Auxiliary Battery Drain, Rear Axle Steering Calibration Fault, Significant Range Degradation in Cold Weather. None are rated critical, but regular maintenance is recommended.
Is the Mercedes-Benz EQS reliable?
The 2025-2025 Mercedes-Benz EQS has 3 known issues documented across 2,260+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Mercedes-Benz EQS problems?
Repair costs for known Mercedes-Benz EQS issues range from $150 to $500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2022-2025 Mercedes-Benz EQS 12V Auxiliary Battery Drain?
The EQS experiences parasitic 12V battery drain when parked for extended periods, preventing the car from waking up or responding to the key fob. Despite having a massive high-voltage battery, the 12V system powers critical wake-up circuits and can discharge in as little as 7-10… Repairs typically run $150-$500. Severity: medium.
What is the 2022-2025 Mercedes-Benz EQS Rear Axle Steering Calibration Fault?
The optional rear-axle steering system on the EQS can lose calibration, triggering a steering fault warning and defaulting to a reduced turning circle. The issue is typically caused by a software glitch in the rear steering control module rather than a mechanical failure. Severity: medium.
What is the 2022-2025 Mercedes-Benz EQS Significant Range Degradation in Cold Weather?
EQS owners report range drops of 30-40% in temperatures below 32°F, significantly exceeding the typical 15-20% cold-weather penalty seen in other EVs. The large battery and HVAC system draw heavily on available energy, and the heat pump system underperforms in extreme cold. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
