Learn how to choose and install a new Ford Fusion key fob battery to keep yours in perfect working order.

Stick with us as we’ll cover the symptoms of a dead fob battery, how to test it, how to change the key fob battery, and how to repogram a key fob after replacing the battery.

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.

If your key fob isn't working, it probably needs a new battery.