Operating device for electronic device functions in a motor vehicle

The device has a graphical user interface with a touch-sensitive display (2) and an interpretation unit (3) interpreting user inputs received by the display. An acoustic user interface is activated by a driver by using a function key (8). A control device (1) has a processing unit for processing program statements and data stored in memory units. Operating process of an electronic device is executed by the acoustic or graphical user interface, where the operating device outputs system responses over the display and a loudspeaker (5) in two operating modes of the operating device.