How to Replace the Battery in a Honda Key Fob?

by Phil Borges // in Car

Do you ever become annoyed with your Honda key fob? How many times have you tried to unlock the door and it won’t work, or turned off the alarm and it won’t turn back on? If this is happening all of the time, then the chances are that your battery needs to be replaced.

If you’re like most people, the key fob in your Honda can be an important part of your day. You might use it to lock or unlock the car, open the trunk, turn on lights, and more. That’s why when you find out that its battery is dead and needs replacing, it can feel like a significant inconvenience. But with this quick guide to replacing the battery in a Honda key fob, you’ll be back up and running again quickly.

How to replace the battery in a Honda Key Fob?

The battery in a Honda Key Fob is very important to make sure your key works when you need it, especially if you happen to be stuck out of town with no other way of getting around except for using public transportation. But how to change battery in honda key fob?  Replacing the battery of a Honda Key Fob should be done with utmost care not to damage the other parts of the car key fob.

The procedure below is applicable to Honda CRV, Civic, Accord, and SUV key fob models.

Here’s the step by step procedure to change the battery in your Honda Key Fob:

Step 1: Remove the metal key from your fob and pull it out.

Step 2: To open the key fob, use a flat head screwdriver to pry open the key fob. Place the screwdriver in the key slot at the top and twist, which should pop it open. The key can also do this work.

Step 3: Your key fob has a battery, which you can replace by pressing your thumb down right above the battery and prying it out with another hand. You can use a flathead screwdriver to help you pop out the old battery. Afterward, press in the new one from behind to keep everything intact. Make sure that the side of the battery with the + sign is facing up.

Step 4: Snap the two sides of your key fob back together. Once it snaps into place, you should be able to start up and drive away.

Replacing battery in honda key fob is simple and easy process. Just make sure you have the correct tools and follow the instructions.

What are the reasons why a key fob won’t work?

There are different reasons why your key fob may not be working. A dead battery is one of the most common issues that prevent a Honda Key Fob from operating properly.

Internal damage to the key fob is another reason why your Honda Key FOB won’t work. A crack in any of the electronic components inside a key fob also prevents it from working properly.

In case you’ve tried replacing the battery and have checked for any internal damage and still can’t get your key to start your car, then it’s possible that the key fob receiver may be faulty. If your car’s alarm system has stopped working, there is a good chance that the receiver inside of it needs to be repaired or replaced. If this happens, you’ll need professional help repairing and replacing it.

What battery does a Honda key fob use?

When you need to change your Honda key fob battery, it’s important that you use the right size and voltage. You can find this information in your auto parts center for whatever model of vehicle that you have.

Honda key fob uses standard CR2032 3-volt batteries with flat circular shapes, generally used by most vehicles. This is a common watch battery and can be purchased at any significant hardware store or electronics store.

If you will be using a different brand of battery that is similar to these 3-volt batteries, it is always recommended to check with the car dealer first before you decide to open the remote control and replace a battery. This way, you will know if it is compatible with your car key fob, and you can preserve the warranty (if there’s one available).

Honda key fob battery replacement is generally very easy and only takes a few minutes of your time. You will need to check the manual that came with your car’s remote control in order to understand how it works so you won’t damage anything on it while opening or taking things apart. If you don’t have the owner’s manual, you can find it online for free on your car manufacturer’s website.


Replacing a Honda key fob battery is easy and can be done in your own home. You don’t have to go into the dealership, pay expensive prices, or waste time waiting for new batteries. With the simple instructions above, you can greatly extend the life of your Key FOB by replacing its aging battery with little effort.

It’s important that your key fob is fully functional and ready for use whenever you need it, no matter where life takes you. With the help of this article, it’s easy to have a fresh, new battery in your key FOB and a sense of security, knowing that it will work every time.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.