Vehicle Questions and Answers
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Key fobs typically have a CR2032 battery, a small coin-shaped battery that costs around $5 each. These batteries are commonly found alongside regular batteries. To replace the battery, you'll need to take off the back panel of the fob. The process may differ depending on the fob model. Some may slide off easily while others may require removing a few tiny screws. With a small screwdriver on hand, removing the screws should be straightforward, allowing you to change the battery easily.
To replace the battery in the original key fob for a 2006 Honda Civic, you will require a CR1616 3-volt battery.