E13
Mercedes-Benz
Firmware Corruption / Bootloader Error
Wallbox shows E13; charging does not start; often after a failed firmware update or power interruption during update.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Interrupted firmware update on Mercedes-Benz wallbox, Incompatible firmware image loaded, Faulty internal flash memory on control board
How to Fix / Troubleshooting
Safety first: Do not repeatedly power-cycle the unit during firmware issues; this can worsen corruption.
- Check update status: If you recently performed an update via app or web interface, verify whether the process completed successfully.
- Attempt recovery mode: Some Mercedes-Benz wallbox models support a recovery or safe mode. Follow the service manual or support instructions to enter recovery and reload firmware.
- Use official firmware only: Download firmware exclusively from official Mercedes-Benz channels. Ensure the correct model and region are selected.
- Control board replacement: If the bootloader itself is corrupted or flash memory is defective, the control board may need to be replaced by an authorized technician.
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Repair Difficulty
Hard
4/5
Required Part
Wallbox Control Board (Firmware Storage)
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