2013 Mazda 6
Key Replacement - Save vs Dealer in San Diego

2013 Mazda 6 Smart Key Replacement - Fast, Affordable & Professional

Mazda uses a transponder immobilizer system on every model since the early 2000s. On older Mazdas, it's a chip in the key head, usually a 4D63 or ID46, that communicates with a coil around the ignition. On newer push-to-start models, the smart fob uses an ID49 chip that talks wirelessly to antennas in the doors and cabin. Either way, the car won't start unless the chip sends back the correct encrypted code.

A freelance graphic designer at the smoothie shop in Carlsbad thought only the dealer could handle the programming on his 2013 Mazda 6. He needed a spare smart key and the dealer quoted $436. He assumed that was the only path because of "the computer chip stuff." A friend who'd used me before passed along my number.

I brought my Smart Pro to his car. It reads the immobilizer PIN, handles the security wait, and registers new keys to the keyless module. His Smart Key, FCC ID KR55WK49383, was a 4-button smart fob.

His spare was programmed and tested in about 30 minutes including the security wait. Total was around $252. Same chip, same programming, same result as the dealer.

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