https://nerdgaming.science/wik....i/A_Look_Into_The_Fu
Key Fob Repair: Replacing the Battery The buttons on key fobs can be damaged and stop working properly after being tossed around in pockets and purses. Replacing the small battery, which a majority of car fobs have in a snap-out case may fix the problem. However, a new replacement could not be able to revive your key fob if the switch's internal contacts are worn out. This is a simple fix that you can do at home. Replace the Battery If your key fob feels slow or takes longe