https://zenwriting.net/drumsquid74/how-to-choose-the-right-key-repair-on-the-internet How to Replace a Dead Key Fob The majority of key fobs are powered by flat watch-style batteries that are easily replaced at home. Replace the battery if the fob isn't working. A new battery may solve your issue, but if it doesn't then you'll need to locate a shop that can do key fob reconfiguration. Many establishments offer this service for a lower cost than the dealership. Damaged Buttons When the buttons on a key fob begin to wear down and become less responsive, they may eventually stop responding. This can be a frustrating problem for any driver, especially because the key fob is the only way you can get into and operate your vehicle. There are a variety of ways you can fix this problem. Always check your key fob's exterior to ensure that there aren't any dent or cracks that could have caused the problem. Keep the key fobs free of dirt and grime as they can hinder the buttons from functioning properly. Signal interference is another potential cause of a malfunctioning fob. This could occur when radio signals from security systems or other devices interfere with the signals that your key fob transmits and receives. This can be tested with a spare key fob to see if it works. If you're unable to unlock your car using the spare key fob, you may have to take it into a professional for reprogramming or replacement. If the buttons on your key fob not responding, it's time to replace the battery. Key fob batteries generally last for three to four years before needing replacement. The easiest method to do this is using a flat-head screwdriver to break open the case. Most key fobs use 3V button cell batteries that can be purchased in supermarkets, pharmacies and home improvement stores. Test the battery again after replacing it to make sure it's working correctly. Also, test the fob by standing close to your vehicle and pressing the unlock or lock button. If the vehicle responds, then