Upgrade module for the Speech Diaglog system (voice control) in the Audi A8 4E - MMI 2G The following components can be controlled by speech: Radio CD Telephone (phonebook) Navigation Very useful for dialing numbers and for navigation . If the telephone option is not factory-fitted, an original microphone must be installed in addition Scope of delivery SDS module Notes Not suitable for MMI 3G This system is only intended for vehicles with MMI-High ( 7" colour display) and a multifunction steering wheel. Must be activated by your Audi dealer.