Guided descaling 

Exclusive to Miele
Effective descaling based on water hardness 
Once you have selected the water hardness before the first use, the appliance automatically determines the required descaling interval for ensuring maximum durability, and reminds you to descale in a timely manner.
You start the descaling programme by simply pressing a button. The display asks you to fill a suitable descaler and then starts automatically. 
Features dependent on model – Illustration(s) as an example, for information