Why Your Car Key Needs to Be Programmed
Most modern keys contain a chip. Cutting the metal is only half the job.
Car keys stopped being simple pieces of metal years ago. Most keys made in the last couple of decades contain a small transponder chip.
When you turn the key or press start, the car checks that chip. If it does not match, the engine will not start, even if the key turns in the ignition.
That is why a new key must be both cut and programmed to your car. A mobile locksmith can do both at your location, so you do not have to tow the car.
A tip: a spare key is easier to make while you still have a working one. Do not wait until your last key is lost.
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