I just got my first car (used). I want to get a replacement key but my partner says I have to go to the dealership. Why can’t I just rekey my existing key at Home Depot? What’s this chip thing in keys that I heard about?
In: 4
A lot of them have chips inside them for the immobilizer.
So for vehicles where you don’t have the key at all you would have to order one from the dealer and have it programmed. This prevents someone from attempting to copy a key and steal the vehicle of course there are ways around this but it makes sense.
Tb is JD power link goes into a lot more detail on the subject [here](https://www.jdpower.com/cars/shopping-guides/how-to-program-a-car-key-chip)
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