See also:

Deleting contacts
To delete a group of contacts: select Data/Connections in the telephone basic menu by sliding and turning the COMAND controller and press to confirm. Select Delete Contacts and press ...

Roadside Assistance button
X Press and hold Roadside Assistance button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in Roadside Assistance button 1 ...

Hiding a service message
X Press the % or a button on the steering wheel. ...