The key fob is your lifeline to your car, letting you unlock the doors and set off the alarm, at a minimum, but how can you ...

Like anything else relying on a battery, you car key fob can die—often at the worst time. Thankfully, these batteries are easy to replace.

These key fobs allow car owners to unlock the door, start the engine, or even open the trunk from far away. But that's not all.

Your car's key fob is totally hackable, but there's a simple way prevent potential break-ins and theft.

Driving off without your key fob won’t immediately stop the car, but you might not be able to restart or lock it once you reach your destination.