Advantages of the Audi Advanced Key System Audi provides a variety of features that make driving even more enjoyable. One of these is the aforementioned key system. It works by using proximity sensors that are located in trunk lids and door handles, which are paired with key radio pulse generators. https://carlocksmiths96859.aioblogs.com/83386953/question-how-much-do-you-know-about-audi-a3-replacement-key