Car Key Replacement Tips For Your Audi Q7 Most people have lost their keys at one point or another. The key fob on an Audi is ideal for Virginia Beach drives but the battery will eventually degrade. A replacement key from an Audi dealer could cost between $280 and $475. https://car-locksmiths21011.blogars.com/29115136/audi-a4-car-key-replacement-11-thing-that-you-re-failing-to-do