How to Change a Battery in an Auto Car Key
- 1). Look at your key fob. Some have a battery cover with a notch. Others have a notch on the side. And some have small screws holding the fob together.
- 2). Open the fob to access the battery. For fobs with notches, use a small coin to either turn the battery cover or pry the two pieces apart. For fobs with screws, remove the screws and open the fob.
- 3). Remove the old battery. Be careful not to touch any of the electrical components.
- 4). Insert the new battery. For most fobs, you insert the battery with the positive sign side up. Check with your owner's manual for the correct way to insert the battery.
- 5). Reassemble the key fob.
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