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How to Repair a Remote Key Even though most remote key fobs boast an impressive battery lifespan, they eventually degrade. Sometimes it's as easy as changing the batteries, however sometimes there are more serious problems. Take apart the remote and clean the buttons. Then, flex out and in. These methods could be all you need to get your key fob working. Battery If the fob continues to functioning you can replace the CR2025 or CR2032 battery. If not, you can inspect the battery terminals or buttons to determine if there are any loose parts. The termi