Miele KM 7404 FX Operating And Installation Instructions page 47

Activating the safety lock
 Touch and hold the + sensor.
 Also touch the  sensor and hold
the combined controls for 6 seconds.
The seconds can be seen counting
down in the timer display. When this
time has elapsed  will appear in the
timer display. The safety lock is
activated.
Deactivating the safety lock
 Touch and hold the + sensor.
 Also touch the  sensor and hold
the combined controls for 6 seconds.
 will appear briefly in the timer
display and then the seconds will be
seen counting down. Once the time has
elapsed, the lock function is
deactivated.
Safety features
47