mazda cx 5 keyless entry 2 Key Types mazda 3 Car key replacement's smallest car provides great drive and excellent fuel economy. It also applies a blowtorch to German small cars that dance about being a premium car, while demanding more for less. Its rear doors are surprisingly large, and it also has a huge tailgate, making loading an easy task. It also comes with the latest safety equipment and looks stunning. Key Replacement There are various types of keys that are suitable for 2006 mazda 6 key fob vehicles. Some require programming, while others don't. The question of whether or not your key should be programmed varies based on the year of your vehicle and what kind of key it is (fob, remote, intelligent chip, "push-to-start", etc). Programming requires a special device that only a dealer is equipped with or an automotive locksmith may use. Metal keys that aren't transponder-equipped are not required to be programmed. To avoid losing your keys, keep your keys in a secure location that children cannot access.