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.

Long gone are the days of having to use an actual key to unlock your car doors. Modern vehicles typically come with a remote key fob — a term with an interesting backstory — allowing you to lock and ...

A dead key fob battery is an easy DIY fix. Learn how to identify the right battery type and replace it yourself in under five minutes for just a few dollars.