How To Change Battery In Car Key Fob? The Ultimate Guide

If your car key fob stops working, you’ll need to change the battery in it. The good news is that it’s a pretty easy process and we’re here to show you how to change battery in car key fob?  In this guide, we’ll walk you through every step of the process, from removing the old battery to installing the new one.

So whether you’re a first-timer or just looking for a refresher, read on for all the info you need. When your car key fob battery runs out, it can be a pain to change. But with this guide, it’s a breeze! We’ll walk you through every step, so you can get back on the road in no time.

Why Do You Think It’s Important To Know How To Change The Battery In Your Car Key Fob? 

Changing the battery in your car key fob is important because if the battery dies, you won’t be able to start your car. The remote keyless entry system (RKE) uses a small battery to send a signal to your car’s ignition when you hit the unlock button on your key fob. If the battery in your key fob dies, you’ll have to use the key to unlock and start your car.

What Are Some Of The Signs That Your Key Fob’s Battery Might Be Dying? 

If you notice any of the following symptoms, it might be time to change the battery in your key fob: 

1. Your key fob seems to have less range than it used to. This is usually the first sign that something is wrong, as the transmitter in your key fob relies on a strong battery to function properly. 

2. You have to push the button multiple times or hold it down for an extended period of time before your car door will unlock or lock. 

3. Your key fob feels unusually warm to the touch after using it. 

4. The buttons on your key fob are sticking or don’t seem to respond as they should when you press them.

How Do You Go About Changing The Battery In Your Car Key Fob? 

If you’re like most people, your car key fob is an essential part of your daily routine. Not only does it make it possible to unlock your car doors and start the engine with the push of a button, but it also helps keep your keys organized and makes losing them a thing of the past.

Unfortunately, those handy little devices don’t last forever and will eventually need to have their battery changed. If you’re not sure how to do this, don’t worry we’ll walk you through the process step by step so you can get back to using your key fob as soon as possible.

Before we get started, it’s worth mentioning that different automakers use different types of batteries in their key fobs. As a result, the steps required to change the battery in your key fob may vary slightly depending on the make and model of your vehicle.

That said, the process is generally pretty straightforward and can be summarized as follows: 

1. Open up your key fob to access the battery. This is usually done by unscrewing the back cover of the key fob. 

2. Remove the old battery and dispose of it properly. 

3. Install the new battery, making sure to orient it in the same direction as the old one. 

4. Close up your key fob and test the new battery by pressing the unlock or lock button.

Are There Any Tips Or Tricks You Can Share For Those Who Might Be Doing This For The First Time?  

Here are a few tips to keep in mind when changing the battery in your car key fob: 

1. Make sure you have the right type of battery. As we mentioned earlier, different automakers use different types of batteries in their key fobs. Consult your owner’s manual or do a quick online search for the make and model of your vehicle to find out what type of battery you need. 

2. Pay attention to the orientation of the battery. When installing the new battery, make sure to orient it in the same direction as the old one. This will help ensure that your key fob works properly after the battery has been changed. 

3. Test the new battery before putting your key fob back together. Once the new battery is installed, press the unlock or lock button to make sure it’s working properly. If everything seems to be working as it should screw the back cover of your key fob back on and you’re good to go.

4. Replace your key fob’s battery sooner rather than later. If you notice any of the signs that your key fob’s battery might be dying, don’t wait to change it. A dead or dying key fob can be a major inconvenience, so it’s best to take care of the problem as soon as possible.

Does Everyone Need To Know How To Do This, Or Is It Just A Select Few?  

While it’s certainly not a requirement, knowing how to change the battery in your car key fob can definitely come in handy. After all, there’s nothing worse than being stranded with a dead key fob especially if you’re in a hurry or in a situation where you can’t easily get a new one.

Conclusion:

While it’s not something that everyone needs to know how to do, changing the battery in your car key fob can be a lifesaver if you find yourself in a bind.  So, what are some of the signs that your key fob’s battery might be dying? And more importantly, how do you go about changing the battery in your car key fob? 

We’re here to help with both of those questions.  First, let’s take a look at some of the signs that your key fob’s battery might be on its last legs. Then we’ll walk you through the steps for changing the battery including a few tips and tricks for those who might be doing this for the first time.


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Yusuke Kohara
By Yusuke Kohara

Hi, my name is Yusuke Kohara. I'm a research scientist with 20+ years of experience in the battery industry. My knowledge and expertise has been applied to power electric vehicles, mobile electronics, and more! I am also a true car enthusiast. It’s not just about cars for me - it's about all things automotive! I enjoy helping others find their perfect vehicle by providing detailed buying guides as well as reviews on different types of batteries from various manufacturers across the world.


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