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While key fob batteries might last a long time, it’s only a matter of time until you need to replace them. The good news is replacing your key fob is incredibly easy, even if you don’t have any mechanical experience!
Don’t believe us? Just keep reading, and we’ll walk you through everything you need to know to replace the battery in your vehicle’s key fob for less than $10! And that’s far less expensive than a brand new key fob that can cost you well over $100.
4 Steps To Replace Your Key Fob Battery
The good news is that replacing your key fob battery is easier than you think. All you need to do is follow these four simple steps, and you’ll have a new battery in your key fob in no time!
1. Gently Pry It Apart
Find where the two pieces of your key fob mesh together and get a small flat-tipped screwdriver or something similar and slip it in there.
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- COMPATIBLE WITH AIRTAG & KEY FOBS: Works with Apple AirTag, all major car key fobs (Toyota, Honda, BMW, Ford, Chevrolet, Lexus), fitness trackers, glucose monitors, tire pressure sensors, and any CR2032 / 3V lithium coin battery device.
- CHILD SAFETY: BITTER TASTE ON BOTH SIDES TO HELP KEEP CHILDREN SAFE—Duracell CR2032 features a bitter taste coating applied to BOTH SIDES of the battery to help deter accidental ingestion by young children.
- SUPERIOR LONGEVITY: Duracell Lasts Longer Than Energizer 3-In-1* | *Duracell 2032 size only. Based on ANSI Digital Household test vs. Energizer 2032 3-in-1.
- QUALITY ASSURANCE: Every Duracell lithium coin battery is manufactured to precise specifications and guaranteed against defects in material and workmanship. Trusted in medical devices and safety applications.
- FAMILY-SAFE PACKAGING: Duracell CR2032 batteries are sold in child-safe packaging—an additional layer of safety for households with young children.
From there, slightly twist the screwdriver until you notice or hear the two pieces pop apart. Next, work your way around with the screwdriver until you have the entire key fob in two pieces.
2. Find the Battery
Now that you’ve separated the key fob into two pieces, you need to locate the battery. Typically, key fobs will use a CR2032, CR2450, CR2025, or a CR2016 battery. All of these batteries are small, flat, circular batteries. To determine the battery size, just take a look at the battery – it should have the number written right on it!
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- IN THE BOX: 10-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
- DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
- DESIGNED TO LAST: Long-lasting, reliable performance; 225mAh capacity
- EASY IDENTIFICATION: Engraved with battery model for quick identification
- DISPOSABLE: To learn more about recycling single-use batteries, simply copy/paste this link into your browser: call2recycle.org/what-can-i-recycle
Before removing the battery, take note of the positioning. You should either see a “+” or a “-“ to let you know the correct position. Once you remove the battery, your key fob might not label which way the new battery needs to go – so it’s important to note the position before you pull it out.
3. Replace the Battery
Once you’ve removed the old battery, it’s time to install the new one. It’s best to use a completely new battery during this process. They’re available for less than $10, so there’s no reason to try and save a few bucks by finding a new battery.
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- COMPATIBLE WITH AIRTAG & KEY FOBS: Works with Apple AirTag, all major car key fobs (Toyota, Honda, BMW, Ford, Chevrolet, Lexus), fitness trackers, glucose monitors, tire pressure sensors, and any CR2032 / 3V lithium coin battery device.
- CHILD SAFETY: BITTER TASTE ON BOTH SIDES TO HELP KEEP CHILDREN SAFE—Duracell CR2032 features a bitter taste coating applied to BOTH SIDES of the battery to help deter accidental ingestion by young children.
- SUPERIOR LONGEVITY: Duracell Lasts Longer Than Energizer 3-In-1* | *Duracell 2032 size only. Based on ANSI Digital Household test vs. Energizer 2032 3-in-1.
- QUALITY ASSURANCE: Every Duracell lithium coin battery is manufactured to precise specifications and guaranteed against defects in material and workmanship. Trusted in medical devices and safety applications.
- FAMILY-SAFE PACKAGING: Duracell CR2032 batteries are sold in child-safe packaging—an additional layer of safety for households with young children.
Moreover, each battery should last close to ten years, so if you do the job right the first time, you won’t have to worry about it again any time soon! Also, be sure to place the battery is facing the right direction. Otherwise, you’ll have to tear everything back apart to fix it!
4. Snap it Back Together!
Once you’ve installed the new battery, all you need to do is line everything back up and snap it back together! Push all the way around until you get a completely snug fit. If you don’t have everything snug, then water or other foreign elements can work their way in and end up damaging the key fob.
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- 10 pack of Energizer CR2032 Batteries (CR2032 3V Lithium Battery compatible with Apple AirTags and Key Fobs)
- 3V lithium coin batteries enclosed in child-resistant packaging to help keep kids safe from potential ingestion
- Long lasting CR2032 battery for car remote key, toys, and health monitors. CR 2032 batteries work as an Apple AirTag battery and also with similar devices
- CR 2032 3V battery performs in extreme temperatures from -22 F to 140 F
- Energizer 2032 batteries hold power up to 12 years in storage
Tips for Starting Your Car With a Dead Key Fob
While all you used to need your key fob for was to unlock your car without standing next to it, there might not be a key slot to start your car in modern vehicles! So, if you have a dead key fob, you might find that you’re unable to start your car to even get to the store to get a new battery!
But, if you’re in a pinch and can’t replace your key fob battery right away or don’t have the right batteries with you, that doesn’t mean you can’t start your car. A little-known trick to start your car with a dead key fob is to simply push the entire key fob against the push start button.
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- COMPATIBLE WITH AIRTAG & KEY FOBS: Works with Apple AirTag, all major car key fobs (Toyota, Honda, BMW, Ford, Chevrolet, Lexus), fitness trackers, glucose monitors, tire pressure sensors, and any CR2032 / 3V lithium coin battery device.
- CHILD SAFETY: BITTER TASTE ON BOTH SIDES TO HELP KEEP CHILDREN SAFE—Duracell CR2032 features a bitter taste coating applied to BOTH SIDES of the battery to help deter accidental ingestion by young children.
- SUPERIOR LONGEVITY: Duracell Lasts Longer Than Energizer 3-In-1* | *Duracell 2032 size only. Based on ANSI Digital Household test vs. Energizer 2032 3-in-1.
- QUALITY ASSURANCE: Every Duracell lithium coin battery is manufactured to precise specifications and guaranteed against defects in material and workmanship. Trusted in medical devices and safety applications.
- FAMILY-SAFE PACKAGING: Duracell CR2032 batteries are sold in child-safe packaging—an additional layer of safety for households with young children.
Even if you have a completely dead battery in the key fob, this will start your car and send you on your way! Just keep in mind that this won’t unlock your doors, so if you don’t have another way in without the electric part of the key fob, you still might find yourself in some trouble.
Conclusion
Just because your key fob has a dead battery doesn’t mean you need to freak out. It’s one of the most affordable and straightforward repairs, and your vehicle manufacturer even installed a way for you to start your vehicle if you have a dead battery!
So, what are you waiting for? Get everything you need to get that battery replaced today – it’s one less thing you’ll need to worry about.
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