: Sit in the driver's seat with all doors closed. Place the fob near the designated sensor (usually on the steering column) and hold the Start/Stop button for 10–15 seconds to allow the car to recognize the fob. 2. Programming a New Key (Professional Only)
If you have access to a diagnostic tool, you can follow these general steps: 2015 audi a3 key programming
A locksmith or dealer follows this general process: : Sit in the driver's seat with all doors closed