Add Yahoo as a preferred source to see more of our stories on Google. TAMPA, Fla. (BLOOM) — You’re rushing to work, the gym, or the grocery store when it happens — you press your key fob, and nothing.

Modern cars have swapped regular keys for key fobs, and most of them use a CR2032 button cell battery. How can you tell if it's weak? How long do they last?

Check your battery type. Most fobs use small coin batteries (like CR2032), so confirm before you buy. Pry it open with care. Find the seam, pop it gently—no need to wrestle with it. Replace and click ...

It happens to the best of us. You realize that your car keyfob battery is low, but you figure you have plenty of time left before it dies, and usually you do. But inevitably, it will run out of power ...

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 ...

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 ...