I still need to do this. I keep putting it off. hahaah.
Thanks for your post, I have the same car.I just did this with a 2012 I Touring Skyactiv sedan. I used an $8 transponder key I bought on Ebay. The chip was identified as 4D-63. Note that this key is only for the ignition, and the manual opening of the door; there is no keyless entry with it.
Starting with the first working key, the procedure is to turn the ignition to the "on" position and remove the key when the security light goes out. (Do not start the engine.) Within four seconds insert the second working key and turn it to the "on" position until the security light goes out. Then, within four seconds insert the new key and turn to the "on" position. If it works, the security light will go out just as it did for the first two keys, and the key is programmed.
It is recommended that each key be tested by starting and running the car for at least five seconds, leaving the car off at least five seconds between keys.
Note that this will not work if the PCM has customer spare key programming disabled, but the default is for it to be enabled. (It may be turned off for fleet vehicles, so if you've bought a used rental car, it may have been turned off.) A dealer can turn it back on. Others have reported that if you don't have two original keys but rather one original and one cloned by a locksmith, it won't work either. I don't know if it will work if the key chip has a different number from that listed above.
Exactly. The key does need to be cut before you can program it. You can either go to a dealer, or if you were to order from onlinemazdaparts Jason will cut the key for you prior to shipping (if you ask and provide accurate info). In theory a locksmith can cut they key.... that said I did have an issue with a home depot cutting a key incorrectly as they didn't have the correct insert for Mazda keys and the Ford insert wasn't quite right.So let me get this right.
You can purchase a transponder key online and program it yourself as long as you have two working keys.
So do you have to take the third key to the dealer to get cut or can a locksmith do it for you? And do you have to cut the key first before programming?