See also:

Activating audio AUX mode
When you connect an external audio source, audio AUX is not selected automatically. Select Audio in the main function bar by sliding and turning the COMAND controller and press to confirm. ...

Changing the set speed
When DSR is activated, the set speed can be changed to a value between 1 mph and 10 mph (Canada: between 2 km/h and 18 km/h) during the journey. – To increase or decrease the set speed in 1 ...

Please bear the following in mind
Resetting the service interval display A qualified specialist workshop, e.g. an authorized Mercedes-Benz Center, will reset the service interval display after the necessary service work has bee ...