Miele Door Detection / Light Control Fault

Interior light stays on even when the door is closed; cabinet may become warm near the light.

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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

Stuck or misaligned door contact switch, Broken door magnet, Shorted light control transistor on main board, Warped door not closing fully

How to Fix / Troubleshooting

Safety first: Unplug the unit before adjusting the door switch or working on the control board.

  • 1. Confirm door closure:
    • Check that the door closes fully and the gasket contacts the cabinet all around.
  • 2. Inspect door switch and magnet:
    • Ensure the magnet in the door aligns with the reed switch in the frame.
    • Replace the magnet or switch if damaged.
  • 3. Test switch function:
    • Use a multimeter to verify the switch opens/closes when the door is moved.
  • 4. If switch is good:
    • The light control circuit on the main board may be stuck on; this requires board repair or replacement by a technician.
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Repair Difficulty

Medium 3/5

Required Part

Door Contact Switch
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