When we think about our Subaru key fobs, one question often comes to mind: what size battery do they actually use? It’s something we’ve all encountered at some point, especially when our fob starts acting up. Fortunately, we’ve got the answers you need to ensure your key fob’s always ready to go. In this article, we’ll walk you through the common battery sizes, how to identify your specific key fob model, and the steps to easily replace the battery. Let’s dive in and get our key fobs back in top shape!

Subaru Key Fob Battery Sizes in Plain English

The duplicate Subaru battery-size pages all pointed to one practical answer: most owners are choosing between CR2032, CR2025, and on some fobs CR2016. The safest rule is still to confirm the old battery code after opening the shell, because model year and fob shape can differ.

Battery code	Where it often appears	What to do before buying
CR2032	Many common Subaru smart keys	Still verify the old cell because not every Subaru fob uses the thicker battery.
CR2025	Some slimmer Subaru key fobs	Check the exact thickness and code printed on the old battery.
CR2016	Less common Subaru fob variants	Do not substitute unless the old battery confirms it.

If you need the opening and swap steps too

Use our main Subaru battery replacement page for the full process: changing the battery in your Subaru key fob.

Related What Key Fob Guides

• Subaru key fob battery replacement guide
• Open a Subaru key fob step by step
• Start a Subaru when the key fob is dead

Key Takeaways

Most Subaru key fobs typically use CR2032 batteries, with some requiring CR2025 or CR2016 batteries.
Proper replacement involves careful opening of the fob, noting battery orientation, and ensuring the new battery fits correctly.
Signs of a failing key fob battery include weak signal range, unresponsive buttons, and a dimming indicator light.
To extend battery life, minimize button presses, store in a cool, dry place, and regularly inspect for wear or damage.

Common Battery Sizes for Subaru Key Fobs

We’ve found that most Subaru key fobs typically use CR2032 batteries. However, some models may require CR2025 or CR2016 batteries instead. We’ve noticed that it’s always best to check the specific model for the correct size. In our experience, having a few spare batteries on hand can save us time. We’ve learned that replacing the battery is usually a quick and easy process.

How to Identify Your Key Fob Model

To identify our key fob model, we can start by checking the owner’s manual for specific details. Another quick method is to look for the model number printed on the fob itself. With these steps, we’ll be well on our way to finding the right battery size for our Subaru key fob.

Check Owner’s Manual

The owner’s manual is a valuable resource for us, providing detailed information about our key fob model and its specific battery requirements. We’ve gotta make sure we reference it to avoid any confusion. By following the guidelines in the manual, we can easily determine the correct battery size. It also helps us understand the replacement process, making it simpler for us. With this information, we’ll ensure our key fob operates effectively.

Look for Model Number

Finding the model number on our key fob can often save us time and effort in getting the correct battery. We’ll want to closely examine the back or side of the fob for any printed numbers. If we find the model number, it’ll guide us in selecting the right battery size. It’s a straightforward step that can prevent us from making mistakes. Once we have the model number, we’re one step closer to keeping our key fob functioning smoothly.

Steps to Replace Your Key Fob Battery

Now that we know how to identify our key fob model, let’s move on to replacing the battery. We’ll need to gather our tools and follow a few simple steps. Together, we can ensure our key fob is back in working order in no time.

Prepare Your Tools

Gathering the right tools is essential for making the battery replacement process smooth and efficient. We’ll want to have a small flathead screwdriver on hand to pry open the key fob. It’s also helpful to have a pair of tweezers for handling the new battery. We should ensure that we have a replacement battery, typically a CR2032, ready to go. Lastly, finding a clean workspace will help us stay organized during the process.

Open the Key Fob

We’ve got to carefully open the key fob to access the battery inside. First, we’ll locate the small notch or seam where the fob separates. Then, we can use a flathead screwdriver or a coin to gently pry it apart. Once it’s open, we’ll see the battery compartment right away. Finally, we’ll take out the old battery and get ready to replace it with a new one.

Replace the Battery

Replacing the battery in our key fob is a straightforward process that can save us time and hassle. Once we’ve opened the key fob, we can easily locate the battery compartment. We’ll need to carefully remove the old battery and replace it with a new one. After ensuring it’s securely in place, we can reassemble the key fob. Finally, we’ll test it to confirm everything’s working as it should.

Reassemble the Key Fob

Reassembling the key fob is a straightforward process that’ll have it ready for use again in just a few moments. We’ll start by aligning the two halves of the fob carefully. Once they’re matched up, we’ll press them together until we hear a click. After that, we’ll test the buttons to make sure everything’s functioning properly. Finally, we’ll attach the key fob to our keyring, and we’re all set!

Tips for Extending Battery Life

To keep our key fob batteries lasting longer, we should be mindful of how we use them. By optimizing our key fob usage and storing it properly when not in use, we can make a noticeable difference. Let’s dive into some specific tips to help us extend battery life.

Optimize Key Fob Usage

Optimizing our key fob usage can significantly enhance its longevity and efficiency. We’ve gotta avoid unnecessary button presses and ensure we’re only using the key fob when needed. It’s best if we keep it away from extreme temperatures, as those can drain the battery faster. We should also consider using our fob sparingly and rely on manual entry when possible. By making these small adjustments, we can help keep our key fob in top shape for longer.

Store Properly When Not In Use

Proper storage of our key fobs when they’re not in use can significantly help in maintaining their battery life. We should keep them in a cool, dry place away from direct sunlight. It’s best to avoid leaving them in the car, especially during extreme temperatures. We can also use a designated pouch or container to prevent accidental button presses. By being mindful of these practices, we can ensure our key fobs last longer.

Where to Buy Replacement Batteries

When we’re looking for replacement batteries, we’ve got several options at our fingertips. We can check out local auto parts stores or explore various online retailers and marketplaces. Let’s dive into those choices now.

Local Auto Parts Stores

Local auto parts stores offer a convenient way for us to find the replacement batteries we need without waiting for shipping. We can easily stop by and check the available options. It’s great to have knowledgeable staff who can help us choose the right battery. Plus, we often find competitive prices right in our neighborhood. We’ll leave with our new battery and a sense of accomplishment.

Online Retailers and Marketplaces

We’ve found that online retailers and marketplaces often offer a wider selection of replacement batteries at competitive prices. We can browse through various brands and types without leaving our homes. Plus, many sites provide customer reviews, helping us make informed choices. With just a few clicks, we can compare prices and find the best deals available. It’s become so convenient that we rarely need to visit physical stores anymore.

Signs Your Key Fob Battery Needs Changing

We’ve all experienced the frustration of a key fob that just won’t cooperate. If we notice a weak signal range or unresponsive buttons, it might be time to check the battery. Additionally, if we find ourselves replacing the battery frequently or seeing a dim indicator light, those are clear signs it’s time for a change.

Weak Signal Range

A weak signal range can make it difficult for us to unlock our car doors from a distance, often leading to unnecessary frustration. We’ve all been there, standing outside in the rain, pressing the button repeatedly with no response. It’s easy to overlook how crucial a strong signal is until we find ourselves in that situation. When we start to notice the range diminishing, it’s a clear indication that something needs to change. Let’s not wait too long before we take action and replace the battery.

Unresponsive Buttons

Unresponsive buttons can lead to a frustrating experience, especially if we’re in a hurry to get inside our vehicle. We’ve all been there, pressing the button repeatedly, hoping it’ll finally work. It can be annoying when we realize that simply changing the battery might solve the problem. If we notice this issue happening more often, we should definitely take action. Ignoring it could mean getting locked out when we least expect it.

Frequent Battery Replacement

Frequent battery replacement can be a sign that something’s wrong with our key fob or its usage. We might be pressing the buttons too often or using the fob in extreme conditions. If we notice that the battery lasts only a few weeks, it could indicate a deeper issue. Sometimes, it’s just a matter of using the wrong battery size or type. In any case, we should pay attention to these signs to avoid further frustration.

Dim Indicator Light

Noticing a dim indicator light on our key fob often signals that it’s time for a battery replacement. We’ve learned to keep an eye on that light, as it can save us from being locked out of our vehicle. When it starts to flicker or fade, we know we shouldn’t ignore it. It’s a small but crucial reminder that we need to act quickly. Changing the battery at this point can prevent further inconvenience down the road.

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