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?

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 ...

We may receive a commission on purchases made from links. Key fob battery lifecycles can be hit or miss. They typically last between two and five years, but there are many factors that can contribute ...