You fix a key fob battery by replacing it. Here's a step-by-step guide:
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Pry Open the Fob: Carefully use a small screwdriver or plastic opening tool to pry open the key fob's plastic casing. The location to pry will vary by model, so consult your owner's manual or search online for specific instructions for your key fob. Be gentle to avoid damaging the plastic.
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Remove the Old Battery: Once the fob is open, locate the old battery. It's usually a small, round, flat battery (like a coin). Note the battery type and orientation (positive side up or down) before removing it. You might need to use a small tool to gently dislodge it.
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Insert the New Battery: Purchase a new battery of the same type as the old one. You can find the battery type printed on the old battery itself. Place the new battery into the fob, making sure to match the correct orientation.
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Close the Case: Carefully snap the key fob case back together. Ensure it is securely closed to protect the battery and internal components.
That's it! Your key fob should now be working. If it's still not working, double-check the battery type, orientation, and that the fob is securely closed. You might also need to consult your vehicle's owner's manual for specific programming instructions if the key fob requires it after a battery replacement (this is rare but possible on some newer vehicles).
