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  2. How to Change the Battery in Your Car Key Fob - AOL

    www.aol.com/change-battery-car-key-fob-194637492...

    Though batteries can last anywhere from two to five years or more, if the battery in the fob is weak, you might not be able to get into the car or remotely start it (one of many possible secret ...

  3. Remote keyless system - Wikipedia

    en.wikipedia.org/wiki/Remote_keyless_system

    To prevent this, the key fob does not use the same unlock code each time but a rolling code system; it contains a pseudorandom number generator which transmits a different code each use. [9] The car's receiver has another pseudorandom number generator synchronized to the fob to recognise the code.

  4. 10 Secret Uses for Your Car Key Fob - AOL

    www.aol.com/10-secret-uses-car-key-203031883.html

    The post 10 Secret Uses for Your Car Key Fob appeared first on Reader's Digest. This piece of plastic may be little, but can help you do more than just unlocking your car.

  5. Car key - Wikipedia

    en.wikipedia.org/wiki/Car_key

    Car key in ignition Car ignition and steering wheel lock. A car key or an automobile key is a key used to open and/or start an automobile. Modern key designs are usually symmetrical, and some use grooves on both sides, rather than a cut edge, to actuate the lock. It has multiple uses for the automobile with which it was sold.

  6. Why should you keep your key fob in a metal (coffee) can? To ...

    www.aol.com/why-keep-key-fob-metal-120333440.html

    The single most important tip is that car consumers should always store their key fob in a metal container or a metal wire bag often called a Faraday cage that prevents the key fob from ...

  7. Smart key - Wikipedia

    en.wikipedia.org/wiki/Smart_key

    The smart key allows the driver to keep the key fob pocketed when unlocking, locking and starting the vehicle. The key is identified via one of several antennas in the car's bodywork and an ISM band radio pulse generator in the key housing. Depending on the system, the vehicle is automatically unlocked when a button or sensor on the door handle ...