Miele KM 452 Operating Instructions Manual page 22

The cooktop has a safety lock to
prevent children or pets from turning on
the burners or changing the settings.
The safety lock can be activated when
the cooktop is turned off as well as
when it is in use.
If the safety lock is activated
cannot be turned on.
If the safety lock is activated
– The settings for the burners and for
the timer cannot be altered.
– The burners and cooktop can still be
turned off but once turned off cannot
be turned on again.
22
then the cooktop
:
^ Touch the control for the safety lock
a until the indicator above it lights.
The indicator light will go out after a
short while.
If you touch the control for the safety
lock a or try to select a setting the
light will come on again to show that the
child safety lock has been activated.
Touch the control for the safety lock a
until the indicator light above it goes
out.
If there is a power failure the safety
lock will be deactivated.