Advantages of the Audi Advanced Key System Audi offers a range of features that make driving more enjoyable. One of these features is the aforementioned key system. It operates through proximity sensors located in the lids of the trunk and door handles, and is paired with key radio pulse generators. https://auto-locksmith92176.onesmablog.com/five-lessons-you-can-learn-from-audi-a3-replacement-key-70589761