New key fobs must be programmed with codes that the vehicle has to read before it unlocks the door or allows starting the engine.

How exactly do you swap out the battery on your key fob? In this piece, we’ll walk you through how to change the key fob battery for a specific vehicle - the Toyota Prius. Read on to learn more.

Batteries fade and die over time, but but changing the cell in your Chevrolet key fob doesn't have to be difficult.