How Does Your Key Fob Work? The key fob uses wireless technology with a frequency of 433 MHz. There are receivers/transmitters on the vehicle and the key, so they can communicate with each other. This ...

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A key fob is a small device that helps you engage the security system on a car to gain access and, sometimes, start the car remotely. They come attached with an RFID chip & an antenna inside and use ...

John Paul, AAA Northeast's Car Doctor, hears from a reader buying a used car that only comes with one key fob. The post How can I get another key fob for an older car I’m buying? appeared first on ...

You may know the signs of a key fob with a bad battery: having to press the button multiple times or getting close to the car for activation to kick in. Sometimes the functions engage, and at other ...