Due to a software error in the Battery Management System (BMS), there have been isolated cases of an...
Porsche technical service bulletin WTF7 for 2025-2026 Porsche 911 and 2025-2026 Porsche 911 GT3.
- Bulletin number
- WTF7 (WTF7)
- Component
- Electrical system
- Summary
- Due to a software error in the Battery Management System (BMS), there have been isolated cases of an unintentional software reset and consequently a communication error as a result of implausible time differences. This sometimes causes yellow “Battery low” warning messages followed by red “Vehicle electrical system fault” warning messages to appear on the instrument cluster, which automatically reset themselves after the vehicle has been parked.
Vehicles covered
- Porsche 911 2025-2026 20252026
- Porsche 911 GT3 2025-2026 20252026
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