Broken car key replacement process and options

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If you've snapped your car key in half or lost it entirely, your first step is figuring out if you need a mechanical key or an electronic fob. For a basic metal key, any locksmith can cut you a new one from the code stamped on the lock cylinder, or you can order a blank online and have it cut locally. For modern transponder keys or fobs with chips, the process is trickier—you'll need to visit a dealership or an auto locksmith who can program the new key to match your car's immobilizer system, a…