Look in your pocket, purse, bag, or junk drawer, and chances are you’ll find a key fob. The basic ones lock and unlock your car’s doors. The fanciest do much more. But no matter which kind you have, ...

Regardless of how many times you press the button or smack the key fob against the palm of your hand, the doors won't unlock.

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 ...