Advantages of the Audi Advanced Key System Audi offers a range of features that make the time behind the wheel more enjoyable. One of these is the aforementioned key system. It operates through proximity sensors located in trunk lids and door handles, and is paired with key radio pulse generators. https://auto-locksmith93780.idblogz.com/30373341/the-unspoken-secrets-of-audi-a3-replacement-key