Kia Intermittent Power or Control Reset

Kia EV charger randomly restarts or reboots during charging sessions.

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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

Loose internal low-voltage connector, Failing auxiliary power supply, Firmware instability, Overheating of control electronics

How to Fix / Troubleshooting

Safety first: Frequent reboots can interrupt charging and may indicate an underlying fault.

  • 1. Check ventilation and temperature: Ensure the charger is not overheating; clear obstructions and avoid direct sun if possible.
  • 2. Power-cycle and observe: Turn off the breaker for 5 minutes, then restore power and monitor a full charging session.
  • 3. Firmware update: Install the latest firmware via the Kia app or service interface to address known stability issues.
  • 4. Internal connection check (technician): With power off, a technician can inspect and reseat low-voltage connectors on the main board and display.
  • 5. Replace auxiliary supply or main board: If reboots persist, the auxiliary power supply or main control board may need replacement.
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Repair Difficulty

Hard 4/5

Required Part

Auxiliary Power Supply / Main Control Board
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