Siemens User Interface or Door/Start Interlock Issue

Washer powers on but will not start a cycle; Start button unresponsive

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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

Child lock (key lock) activated, Faulty Start/Pause button, Defective user interface PCB, Door not detected as closed

How to Fix / Troubleshooting

Safety first: Unplug the washer before removing the control panel.

Steps to restore start function:

  • Check child lock: Look for a key symbol on the display. Deactivate child lock by holding the designated button combination (refer to Siemens manual, often pressing and holding two buttons for several seconds).
  • Verify door closure: Ensure the door is firmly closed and that the door-closed indicator appears.
  • Reset electronics: Unplug for 5–10 minutes, then reconnect and try again.
  • Inspect control panel: If some buttons work but Start does not, the switch or UI board may be faulty and require replacement.

When to call a technician: UI board replacement and diagnostics are best handled by a Siemens service technician.

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Repair Difficulty

Medium 3/5

Required Part

User Interface Control Board
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