Advantages of the Audi Advanced Key System Audi offers a variety of convenience features to make driving 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, and is paired with key radio pulse generators. https://autolocksmiths65351.daneblogger.com/29327040/the-one-audi-a3-replacement-key-mistake-every-newbie-makes