https://yamcode.com/watch-out-how-repair-key-fob-is-taking-over-and-what-you-can-do-about https://morse-gamble-2.hubstack.net/20-trailblazers-leading-the-way-in-key-fob-repair-1727970588 How to Repair a Remote Key Although many remote key fobs come with impressive battery lifespan, they eventually wear out. Some times it is as simple as replacing the batteries inside the device, however sometimes the issue can be more serious. One quick fix that may help is dismantling the remote and cleaning the buttons before moving them in and out. These techniques may be all you require to get your key fob back in working order. Battery Car key remotes utilize CR2025 or CR2032 batteries and they can be swapped out if the fob is still operational. If can remove the fob and inspect the battery terminals and buttons for any signs of looseness or broken parts. It is usually possible to connect the terminals and buttons back into place. However, you'll need to know what kind of battery is being used in your fob. If the battery isn't the issue, try using an alternative key fob to see whether you can unlock or start your car with it. If you can do so, it's probably time to replace the primary fob. If it doesn't require replacement, you'll require a professional examine it to find the issue. It could be as simple as reprogramming, or it could require other types of repair. It could also be that your car has lost the fob. This isn't something you can do by yourself. Case The case of a remote key is the outer plastic housing and typically comes with a replacement button pad. It is essential to choose a new case as the original case is likely to be quite dirty and it is crucial that the circuit board is set properly in the case. The circuit board controls the key fob's function. You can test it with an instrument set to RF (radiofrequency) mode, and a radio scanner that is tuned to the same frequency as the key fob. Another thing to look at is the contact points for buttons on the keypad.