2023 Mercedes-Benz EQB 300 4MATIC Electrical System Problems
Electrical System complaints account for 39 of 54 total complaints (72%) filed on the 2023 Mercedes-Benz EQB 300 4MATIC. Four related recalls cover high-voltage battery failures, and median mileage at failure is 10,000 miles.
- Electrical System complaints
- 39
- 72% of 54
- Crashes reported
- 0
- Fires reported
- 0
- Injuries reported
- 0
- Median mileage
- 10,000 mi
- Related recalls
- 4
Typical electrical symptoms owners report
- Owners report sudden loss of drive power on the highway, with the vehicle decelerating from 60 MPH to 30 MPH without warning lights.
- Some drivers describe the vehicle failing to recharge at a charging station after a power loss event.
- After the battery management software recall update, several owners report a noticeable drop in driving range and slower DC fast-charging speeds.
- Owners report a sparking noise coming from the battery area while driving, which made them feel unsafe.
- Several complaints describe electrical settings resetting unexpectedly upon starting the vehicle.
- Multiple owners say they were told to park outside and limit charging to 80% while waiting months for recall parts to become available.
When 2023 Mercedes-Benz EQB 300 4MATIC electrical complaints were filed
First complaint Dec 3, 2024, latest Sep 16, 2026.
Electrical System recalls for the 2023 Mercedes-Benz EQB 300 4MATIC
- NHTSA 26V073000Feb 6, 2026Electrical System11,895 vehiclesPark Outside
Electrical system:propulsion system:traction battery
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 EQB 250+, 2022-2024 EQB 300 4MATIC, and EQB 350 4MATIC vehicles. The high voltage battery may fail internally and lead to a vehicle fire while parked or driving.
Risk: A vehicle fire while parked or driving can increase the risk of injury.
Remedy: Owners are advised to park outside and away from structures until the recall repair is complete. Also, owners are advised to only charge their vehicles to a maximum of 80% battery capacity until the remedy has been completed. Dealers will replace the high voltage battery, free of charge. Interim letters, notifying owners of the safety risk, were mailed March 13, 2026. Additional letters will be sent once the final remedy is available. This recall replaces recalls 25V050 and 25V894. Vehicles previously repaired under recall 25V050 or 25V894 will need to have the new remedy completed. Owners may contact MBUSA customer service at 1-800-367-6372. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning February 13, 2026.
- NHTSA 25V894000Dec 19, 2025Electrical System169 vehiclesPark Outside
Electrical system:propulsion system:traction battery
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 EQB 250, 2022-2023 EQB 300 4MATIC, and EQB 350 4MATIC vehicles. The high voltage battery may fail internally and lead to a vehicle fire while parked or driving.
Risk: A vehicle fire while parked or driving can increase the risk of injury.
Remedy: Owners are advised to only charge their vehicles to a maximum of 80% battery capacity until the repair has been completed. Vehicles previously repaired under Recall 25V050 will need to be repaired again. Dealers will update the battery management system software, free of charge. Owner notification letters were mailed February 6, 2026. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025120005. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov on December 23, 2025.
- NHTSA 25V487000Jul 25, 2025Electrical System660 vehiclesPark Outside
Electrical system:propulsion system:traction battery
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022-2023 EQB 350 4MATIC, and EQB 300 4MATIC vehicles. The bus bar in the high voltage battery may be secured with incorrect screws, which can cause the system to have a sudden loss of drive power without warning.
Risk: A loss of drive power increases the risk of a crash.
Remedy: Owners are advised to park outside until the recall repair is complete. Dealers will inspect and replace the high-voltage battery as necessary, free of charge. This will be a phased campaign, with the remedy becoming available in different phases based on model and model years. Owner notification letters were mailed January 9, 2026. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025080004.
- NHTSA 25V050000Feb 7, 2025Electrical System12,236 vehiclesPark Outside
Electrical system:propulsion system:traction battery
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022-2025 EQB 250, EQB 300 4MATIC, and EQB 350 4MATIC electric vehicles. The high voltage battery may fail internally and lead to a vehicle fire while parked or driving.
Risk: A vehicle fire while parked or driving can increase the risk of injury.
Remedy: Owners are advised to only charge their vehicles to a maximum of 80% battery capacity until the repair has been completed. Dealers will update the battery management system software, free of charge. Owner notification letters were mailed on May 22, 2025. This is a phased recall. Phase 1 owner letters were mailed on May 22, 2025. Phase 2 owner letters were mailed on October 31, 2025 and Phase 3 owner letters were mailed on December 12, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025040005.
Electrical System complaints by EQB 300 4MATIC model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
- 202210 (100%)
- 202339 (72%)
- 20243 (50%)
- 20251 (50%)
Frequently asked questions
- How common are electrical system problems on the 2023 Mercedes-Benz EQB 300 4MATIC?
- NHTSA lists 39 Electrical System complaints out of 54 total complaints for the 2023 EQB 300 4MATIC, making up 72% of all complaints filed for this model year.
- Is there a recall for the 2023 Mercedes-Benz EQB 300 4MATIC electrical system?
- Yes, four separate recalls cover the Electrical System, all related to the high-voltage battery potentially failing internally and causing a fire, with the most recent reported on 2026-02-06.
- At what mileage do electrical problems typically show up on this EQB?
- NHTSA data shows a median mileage at failure of 10,000 miles for Electrical System complaints on the 2023 EQB 300 4MATIC.
- Do the EQB electrical recalls involve fires or crashes?
- NHTSA has not recorded any fires, crashes, or injuries tied to these complaints for the 2023 EQB 300 4MATIC, though the recalls address a fire risk from internal battery failure.
- What are owners told to do while waiting for the recall repair?
- Recall notices advise owners to park outside away from structures and to charge the high-voltage battery to no more than 80% capacity until the repair is completed.