Like anything else relying on a battery, your car key fob can die—often at the worst time. Thankfully, these batteries are easy to replace. The post How to Change the Battery in Your Car 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, a butter knife or another key.

Assuming the battery was the problem and not the fob itself, it’s usually not difficult to replace the battery yourself. If that’s not possible, you'll need to take the fob to a dealer or garage.

Emergency solutions for when key fob battery dies Also, keep prevention – changing a weakening fob battery – in mind.