How to Get a Toyota Replacement Key If your Toyota key fob isn't functioning correctly, you might need an alternative battery. It's simple to open the case and insert a flat tool such as a screwdriver. Remove the battery carefully, and then replace it with a fresh one. This is not a complete solution, but it could help get you back on the road. If you have any questions about our Key Replacement Protection that is included in our Tire and Wheel Protection plan We invite you to contact us. ...