Advantages of the Audi Advanced Key System Audi offers a range of convenience features that make the time behind the wheel even more comfortable. One of these features is the advanced key system. It works via proximity sensors located on the lids of the trunk as well as door handles, https://g28carkeysolutions83978.liberty-blog.com/29916516/everything-you-need-to-be-aware-of-audi-a3-replacement-key