Your Ford Fusion key fob battery, ... If you removed a metal ignition key, replace it. Finally, replace the key fob's back cover. Double-check whether the cover is fitted properly. 4.

We’ll show you how to change the battery in your key fob—quickly, safely and without a trip to the dealership. Reader’s Digest walks you step-by-step through this must-have skill.

Watch this video to see how to change the battery in your key fob. How to replace car key battery. Most key fobs have a little slot you can use to pop them open with a small flatheaded screwdriver ...

If the battery in your car key fob has died, here's how to replace it – including the type of battery you'll need and the cost involved.