How do keys that aren’t really “keys” used to start the ignition work. Why cant i stick another person key in and it work? I feel maybe it works like card chip, but how does it maintain power by doing that?
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Are you talking about a key fob or smart key? Those usually have small button batteries in them that can power them for quite a long period of time, as they’re not constantly sending signals out. They’re only active when you press any of the buttons on them.
The fob has a chip in it similar how credit cards have embedded chips. The car will only respond to a fob with the correct chip, which has to be programmed into the car’s computer, usually by a dealer.
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