Step-by-Step Guide: How to Change the Battery in Your Subaru Key Fob – DIY Maintenance Made Easy!

🚗 As a Subaru owner, you know the convenience and security that come with a keyless entry fob. But what happens when the battery in your Subaru fob starts to run low? Don’t fret! In this comprehensive guide, we will walk you through the simple process of changing the battery in your Subaru key fob. Not only will this save you a trip to the dealership or a mechanic, but it will also empower you to take control of your own DIY maintenance. Let’s dive in!

Why Battery Replacement is Important

⚡️ The battery in your Subaru key fob is what powers its functionality, allowing you to lock and unlock your vehicle with ease. Over time, the battery can become weak, leading to intermittent performance or even complete failure. By replacing the battery promptly, you can ensure that your key fob continues to operate smoothly, providing you with the convenience and peace of mind you expect from your Subaru.

Identifying When the Battery Needs Changing

🔋 It’s important to know when it’s time to replace the battery in your Subaru key fob. Here are some signs that indicate the battery may be running low:

  1. Reduced Range: If you notice that you need to be closer to your vehicle for the key fob to work, it’s likely a sign that the battery is losing its power.

  2. Diminished Responsiveness: When you press the buttons on your key fob, and the response time becomes slower or less consistent, it’s a clear indication that the battery is in need of replacement.

  3. Warning Message: Some Subaru models have a low battery indicator that will display on the dashboard when the battery in the key fob is running low. Keep an eye out for any such notifications.

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Tools Required

🛠️ Before we proceed, let’s gather the tools you’ll need for the battery replacement process:

  • A small flathead screwdriver or a plastic pry tool (to open the key fob)
  • A fresh CR2032 battery (readily available at most hardware stores or online)
  • A clean cloth or small brush (to remove any dirt or debris)

Step-by-Step Battery Replacement Process

  1. Prepare Your Workspace: Find a well-lit area and ensure your hands are clean and dry. This will help prevent any damage to the key fob or battery due to static electricity or dirt.

  2. Locate the Battery Compartment: Examine your Subaru key fob and identify the small indentation or slot on its side. This is where the battery compartment is located.

  3. Open the Key Fob: Gently insert your small flathead screwdriver or plastic pry tool into the indentation or slot. Apply slight pressure to pry open the key fob. Be careful not to use excessive force to avoid damaging the fob or injuring yourself.

  4. Remove the Old Battery: Once the key fob is open, you will see the CR2032 battery. Carefully remove the old battery by gently prying it out using your screwdriver or by lightly tapping the fob on a flat surface so that the battery falls out.

  5. Clean the Battery Compartment: Take a moment to inspect the battery compartment for any dirt or debris. Use a clean cloth or small brush to remove any particles to ensure a clean connection for the new battery.

  6. Insert the New Battery: Now, it’s time to insert the fresh CR2032 battery into the key fob. Ensure that the battery is oriented correctly, matching the plus and minus symbols on the fob to those on the battery.

  7. Close the Key Fob: Gently press the two halves of the key fob together until you hear a click, indicating that it is securely closed. Make sure the fob is completely sealed to avoid any water damage.

  8. Test the Key Fob: Stand close to your Subaru and test the key fob by pressing the buttons to lock or unlock the doors. If everything works correctly, congratulations! You have successfully changed the battery in your Subaru key fob.

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Troubleshooting Tips

🔧 In case you encounter any issues after replacing the battery, here are a few troubleshooting tips to help you get your Subaru key fob back in working order:

  1. Check Battery Orientation: Double-check that the new battery is inserted with the correct polarity (matching the plus and minus symbols). The battery should make firm contact with the connectors in the fob.

  2. Inspect Battery Compartment: Verify that the battery compartment is clean and free of any debris or corrosion. If needed, clean it again using a cloth or brush.

  3. Reset Key Fob: If the key fob is not working even after battery replacement, try resetting it. Consult your vehicle’s manual or contact Subaru customer support for specific instructions on how to perform a key fob reset.

  4. Replace the Battery: In rare cases, the new battery may be defective. Try replacing it with another fresh CR2032 battery to see if that resolves the issue.

Frequently Asked Questions (FAQ)

Q: How often should I change the battery in my Subaru key fob?
A: The battery in your Subaru key fob typically lasts anywhere from 1 to 3 years, depending on usage. However, it’s a good idea to keep an eye out for the signs mentioned earlier so that you can replace the battery promptly.

Q: Can I use any type of battery for my Subaru key fob?
A: It is recommended to use a CR2032 battery for your Subaru key fob, as it is the specific type and size specified by the manufacturer.

Q: Can I replace the battery in my Subaru key fob myself, or should I go to a dealership or mechanic?
A: Absolutely! Changing the battery in your Subaru key fob is a simple and straightforward process that you can do yourself, saving you time and money.

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Q: How much does a CR2032 battery cost?
A: A CR2032 battery is an affordable option and can cost around $2 or less, depending on where you purchase it.


🔑 By following this step-by-step guide, you can confidently change the battery in your Subaru key fob on your own. Saving a trip to the dealership or mechanic not only saves you money but also empowers you as a Subaru owner. Remember to keep an eye out for the signs of a low battery and promptly replace it when needed. Enjoy the convenience and peace of mind that comes with a fully functional Subaru key fob!

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Davis Bellew

As a Subaru owner and enthusiast, Davis has a deep understanding of the needs and concerns of Subaru drivers. He specializes in writing informative and engaging content about Subaru maintenance and repair, and his articles are always well-researched and easy to understand. When he's not writing, he enjoys hiking and photography.

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