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How does a keyless car remote work?

Updated: 10/26/2022
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12y ago

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The system consists of a remote, commonly called a "keyfob" and a receiver module located somewhere on the car. This module may be incorporated inside another module or computer on the car, or it may be a stand-alone, separate module. When you press the keyfob button, a signal is sent out by the keyfob. This signal includes a numeric pass code. In other words a series of numbers that could be several digits long. You could compare this to the combination of a combination lock. If the combination agrees with the stored information that has been programmed into the receiver module, the doors unlock, lock, or whatever is supposed to happen, happens.

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Q: How does a keyless car remote work?
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