Advantages of the Audi Advanced Key System Audi offers a range of convenience features to make driving more enjoyable. One of these is the advanced key system. It works by using proximity sensors on the lids of the trunk as well as door handles, paired with key radio pulse generators. https://auto-locksmiths31995.alltdesign.com/5-lessons-you-can-learn-from-audi-a3-replacement-key-49753038