Porsche
Firmware Hang / Controller Lockup
Porsche EV home charger status LEDs flash in an undocumented pattern and the unit appears frozen.
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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
Transient power disturbance causing firmware crash, Firmware bug in specific operating condition, Overheating of controller, Electrical noise on control lines
How to Fix / Troubleshooting
Safety first: Do not repeatedly plug/unplug the vehicle while the unit is unresponsive. Turn off power at the breaker.
- Power cycle: Turn off the breaker for at least 2 minutes, then restore power and observe behavior.
- Check for overheating: Ensure the wallbox is not in direct sun or enclosed space; allow it to cool before retrying.
- Firmware update: If the unit recovers, immediately check for and apply any available firmware updates from Porsche.
- Technician diagnostics: If lockups recur, a technician may need to replace the main control PCB or collect diagnostic logs for Porsche support.
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Repair Difficulty
Medium
3/5
Required Part
Main control PCB firmware
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