Gaggenau User Interface / Control Lock or Button Failure

Dishwasher powers on but will not start any program; the Start button is unresponsive, and no error code is displayed.

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.

Possible Causes

Child lock (control lock) activated, stuck or failed Start button, faulty user interface board, loose UI ribbon cable.

Safety: Disconnect power before removing the door panel.

Steps:

Check control lock: Many Gaggenau dishwashers have a child lock. Refer to the user manual for deactivation instructions (often by holding a specific button combination for several seconds).
Reset appliance: Turn off power for 5 minutes, then restore it and test the appliance.
Inspect UI panel: Remove the inner door panel to access the user interface. Check that the ribbon cable is fully seated.
Test buttons: Use a multimeter to test the Start button contacts or use the service mode key test if available. Replace the UI board if buttons are non-functional.

Medium 3/5

User Interface Board

Check Price on Amazon

We may earn a commission from links on this page.