Key Fob Repair: Replacing The Battery The buttons on key fobs may become damaged and stop working properly after being jostled in pockets and purses. Replacing the small battery, which a majority of car fobs have in a snap-out case, can fix this problem. If the contacts inside your key https://www.g28carkeys.co.uk/welwyn-garden-city-auto-locksmiths-near-me/