How do I change the battery in my car key for a Toyota vehicle?

How do I change the battery in my key fob? My car key isn’t working, so I think it’s time to replace the battery.

Answer
Don’t worry, replacing the battery is as easy! To change the battery for your Toyota car key, follow these steps.
  • Take apart the key: Locate the small metal button on the key and push it. You should be able to pull the physical key out of the fob cover.
  • Open the fob: After taking the key out, you should see a slot. Stick a flat object, or another small tool, into the slot to open the fob cover.
  • Take out the green circuit board: You should see a green circuit board when you open the fob. Gently lift it up to remove and set it aside.
  • Put the new battery in: Write down the type of battery currently in the fob, so you know what kind of battery to use next time. Typically, Toyota car keys will use a CR 2032 battery, which you can purchase at an electronic store or online.
  • Reassemble the key: Put everything back in reverse order.
Now you know how to replace the battery for next time!
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Phoebe Mah
Answered on Nov 22, 2021
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