Maybe your Toyota can’t fly like in “Back to the Future Part II,” but the key fob is a nice reminder that we’re living in the 21st century. It’s a handy battery-operated device that makes it easier for you to access your car and harder for thieves to do the same.
What kind of battery goes in a Toyota key fob?
A common CR2032 3V will do the trick. These are inexpensive, easy to find, and simple to install.
Where Can I Find One and What Will it Cost?
CR2032s are perhaps the most common 3-volt battery, not just for key fobs but for small electronic devices in general. If you’re desperate, you can probably find one right now in your digital watch, your remote control, or an old phone.
Or you can pick one up for a few bucks the next time you’re at the gas station or convenience store. You can find them at Walmart, AutoZone, Family Dollar and many other places. Anywhere you can find batteries, you can find CR2032s.
Typically they’ll run about $2 each. If you’re paying more than that, you’re paying too much, especially since you can get a nice big 10-pack on Amazon for $5.
Our advice: Buy them in bulk. They’re cheaper that way, and you can always find a use for the spares.
How to Replace a Toyota Key Fob Battery
You could trust a 6-year-old to do this fix; it’s easier than tying your shoes.
- Remove the key fob cover with a flathead screwdriver.
- Remove the battery cover from the battery.
- Replace the battery. It’s a good idea to throw the old one out right away, so it doesn’t get mixed in with the fresh batteries.
- Put the battery cover back on.
- Put the key fob cover back on.
If your Toyota key fob isn’t working, 90% of the time it’s going to be because of a dead battery. But if replacing the battery doesn’t work, you’ll want to troubleshoot other possibilities.
If you have a backup key fob, try that out. If it works, your other fob is broken. Otherwise, try resetting the system by disconnecting and reconnecting the battery.
If that doesn’t do the trick, it could be a blown fuse, so get out the owner’s manual and start testing.
But it’s probably the battery, so don’t try anything else until you’ve put a fresh CR2032 inside your key fob and tested it out.
