Mercedes-Benz SLK-Class 2008 COMAND Manual - Manual (Page 171)

171
System
System settings
̈ Use to select the menu item Yes .
̈ Press .
This resets the entire system.
i
If you do not want to reset the system
and not delete the data:
̈ Use to select the menu item No .
̈ Press .
You will exit the reset screen.