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.

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!
While you’ve successfully replaced your key fob’s battery, it never hurts to have extra protection with a roadside assistance membership from Jerry. Jerry’s membership provides you with industry-leading roadside assistance, including benefits like towing, lockout service, and a mechanics hotline to ensure you’re never locked out or stranded!
Phoebe Mah
Answered on Nov 22, 2021

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