Mercedes-Benz COMAND Operator's Manual page 157

System
System settings
A prompt appears asking if resetting
the system and deleting the data is re-
ally intended.
Use  to select the menu item Yes.
Press .
You are prompted again to confirm if
you really want to reset the system and
delete the data.
156
Use  to select the menu item Yes.
Press .
This resets the entire system.
i
If you do not want to reset the system
and delete the data:
Use  to select the menu item No.
Press .
You will exit the reset screen.