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Advantages of the Audi Advanced Key System Audi offers a variety of features that make driving more enjoyable. One of these features is the advanced key system. It operates through proximity sensors located on the lids of the trunk as well as door handles, which are paired with key radio pulse generators. It will unlock automatically when you are within five feet. Keyless Entry The keyless entry function can be a big benefit for those who have to perform quick movements. It eliminates the need to search through pockets and bags to locate a car