If your key has a plastic head and your car was made after the late 1990s, it's almost certainly a transponder key. Here's what that means, and why a hardware-store copy won't start your car.
How a transponder key works
Inside the plastic head is a tiny chip with no battery. When you turn the key, a coil around the ignition powers the chip, which sends a unique code to the car's immobilizer. If the code matches, the car starts. If it doesn't — even with a perfectly cut key — the engine won't turn over. That's the anti-theft system doing its job.
Why cutting alone isn't enough
A kiosk can copy the metal blade, so the key turns in the lock — but without the chip being programmed to your immobilizer, the car still won't start. This is the number-one reason people call me after a cheap copy fails.
How I program a transponder key
I cut the blade to your vehicle (by code or from an existing key) and use dealer-grade equipment to register the chip with your immobilizer — right at your car. Most jobs take 20–40 minutes. See transponder key replacement and car key programming.
Transponder, smart key or remote?
Not sure what you've got? My car key types guide breaks down the differences in plain English.
Need a chip key cut and programmed anywhere around Sarasota? Call or text me at the number above.