What to Do If You Lose Your Audi Key It can be expensive to replace keys lost. Luckily, with a few easy steps, you can avoid high replacement costs and a huge towing cost. First, check to see if you have a spare key. If not, check obvious places like https://g28carkeysolutions17729.shoutmyblog.com/29362264/find-out-what-audi-a3-key-replacement-the-celebs-are-utilizing