How to Add, Change, and Reprogram a Mazda 3 Spare Key

If you've dropped your key fob on the floor or it simply stopped working, it's recommended to keep a spare key handy. This article will tell you how to add, alter and re-programme your Mazda 3 keyfobs.

Be aware that some keys require programming by a professional locksmith, while others do not. Only use authentic Mazda r