Wallet. Cell phone. Car keys. That’s the mental checklist many of us go through before we leave the house.
But don’t you hate it when you approach your car,Fastexy click the unlock button and nothing happens? Regardless of how many times you press the button or smack the key fob against the palm of your hand, the doors won't unlock.
Of course, all hope is not lost because this usually just means the battery in your key fob has died and needs to be replaced. And there's no need for a trip to the dealership to do it as it’s surprisingly quick and easy to change the battery yourself!
Watch this video to see how to change the battery in your key fob.
How to replace car key battery
Most key fobs have a little slot you can use to pop them open with a small flatheaded screwdriver, a butter knife or another key.
To replace the battery:
- Find the notch on the fob. Some fobs may require you to remove the interior key first.
- Gently pop the two halves apart.
- Remove the old battery and replace it with a new one. Pay attention to the orientation of the battery before you remove it so you can put the new one in correctly.
- Snap the halves of the fob back together.
- Test it to see if it works.
This process also works with other small devices, such as garage door openers.
Make sure to properly dispose of the old battery when you’re done.
Oh, and while you're at it, rub your keys with a disinfecting wipe before you put them away. They’re probably overdue for a good cleaning.
Reviewed-approved car recommendations
Purchases you make through our links may earn us and our publishing partners a commission.
Reviewed helps you find the best stuff and get the most out of what you already own. Our team of experts test everything from waterproof speakers to air purifiers so you can shop for the best of the best.
- Customer-loved portable car vacuum:ThisWorx Car Vacuum Cleaner
- Durable phone car holders: Beam Electronics Phone Holder
- A clutch jump-start box: NOCO Boost Plus GB40 1000 Amp UltraSafe Lithium Jump Starter Box
- This well-reviewed dash cam: RedTiger Dash Cam
- A handy USB C charger: Anker USB C Car Charger
