Mercedes-Benz EQ family BMS software recalls
- Manufacturer
- Mercedes-Benz
- Model
- EQ family (EQE, EQE SUV, EQS, EQS SUV)
- Years affected
- 2022–2025
- Risk type
- High-voltage software / loss of propulsion
- Issue
- Two related NHTSA campaigns address battery management system (BMS) software defects on Mercedes-Benz EVs built on the EVA platform. Original campaign 23V405 (June 2023) covered 8,281 US vehicles. Expanded campaign 24V-372 (June 2024) covered 14,912 US vehicles, addressing diagnostic data overflow that can cause high-voltage battery shutdown. Affects 2022-2025 EQS sedan, 2023-2025 EQS SUV, 2023-2025 EQE sedan, 2023-2025 EQE SUV, and AMG/Maybach variants. Total worldwide affected: ~39,800 vehicles across both campaigns.
Summary
The Mercedes-Benz EQ family BMS software recall is the defining safety campaign of the EVA-platform launch generation. Two separate NHTSA campaigns address related defects in the battery management system software. The original 23V405 campaign covered 8,281 US vehicles; the broader 24V-372 follow-up covered 14,912 US vehicles. Both campaigns describe a fault where the BMS can shut down the high-voltage battery during operation, resulting in sudden loss of drive power.
Timeline
The defect was first identified in late 2022 from field reports in Denmark and the United States. The original recall (23V405) was filed in June 2023 with a software-update remedy. That fix proved insufficient — Mercedes continued to investigate and identified that the underlying issue was diagnostic data overflow from other vehicle control units, which could overload the BMS module's memory and trigger a battery contactor opening sequence. The expanded campaign (24V-372) was filed in June 2024, covering the broader vehicle population including the original 23V405 affected vehicles. Mercedes implemented the production-line software fix on May 13, 2024 — vehicles built after that date have current software baseline. Owner notification for the expanded campaign began before July 23, 2024.
Consumer impact
The remedy requires a dealer appointment (45-90 minutes) and cannot be performed via OTA. This is a meaningful inconvenience compared to OTA-capable competitors. The vehicle can be restarted after coming to a complete stop following a BMS shutdown event, but the experience of unexpected loss of propulsion at highway speeds is an acknowledged safety concern in the recall filings — Mercedes was aware of 17 US reports of this defect prior to filing the expanded campaign. Affected owners should verify completion of both 23V405 (if applicable) and 24V-372 via NHTSA VIN lookup. A separate high-amperage 80-amp fuse recall affects a subset of 2023-2024 EQE and EQS vehicles — verify VIN-specific coverage independently of the BMS campaigns.
Help other owners — file with the regulator
If your vehicle is affected by this defect, filing a complaint with NHTSA, Transport Canada, DVSA, or your regional regulator helps build the data record. Each report contributes to pattern detection that can trigger formal investigations and recalls — protecting other owners of the same vehicle, not just you.
You can file at any time, even if your dealer or manufacturer is already handling repairs. The regulatory complaint is a separate channel that helps every owner of your vehicle.
Campaign codes across affected model years
The manufacturer internal campaign codes and NHTSA campaign numbers we have on file for every affected model year. Multiple codes on a single vehicle reflect successive campaigns — sometimes a new campaign supersedes an earlier repair that did not resolve the issue.
| Mfr. code | NHTSA # | Announced | Model year | Description |
|---|---|---|---|---|
| MBUSA-2023060001 | 23V405 | 2023 | 2022 | BMS software defect causes high-voltage battery to shut down, resulting in loss of drive power. Dealer software update remedy. |
| MBUSA-2024060002 | 24V372 | 2024 | 2023 | Expanded BMS software recall — diagnostic data overflow can shut down high-voltage battery. Dealer software update (45-90 min). |
| MBUSA-2023090003 | 23V667 | 2023 | 2023 | AMG EQE SUV pedestrian warning sound (acoustic vehicle alerting system) module recall. Dealer reprogramming. |
Always verify open status by VIN with the regulator in your region:
This table is editorial reference, not a regulatory record. Regulators outside of NHTSA generally require a VIN or registration-plate lookup flow instead of a per-model URL.
Verify your vehicle with the regulator
The regulator in your jurisdiction is always the authoritative source for whether your specific VIN is affected by an open safety campaign. Check the database below using your vehicle identification number.
- United States — NHTSA (US)
- Canada — Transport Canada
- Transport Canada — Transport Canada defects and recalls
- KBA (Germany) — KBA (Germany)
EV Risk Index editorializes around public recall data; we do not replace regulatory guidance. If you believe your vehicle is affected by a safety recall, contact the manufacturer and check the regulator database for your jurisdiction using your VIN.