https://opensourcebridge.scien....ce/wiki/Key_Fob_Repa
Key Fob Repair: Replacing the Battery Being tossed around in purses and pockets keys fobs can get damaged and stop registering presses accurately. Replacing the battery, which most car fobs come with in a snap-out bag, can fix this issue. If the contacts in your key fob are worn, a new replacement may not be enough to make it work again. This is a simple fix you can perform at home. Replace the Battery It's possible to change the battery if your key fob isn't working or takes longer to unlock or lock