How to Replace Subaru Key Fob Battery: Easy Step-by-Step Guide

Step 1: Gather Necessary Tools

Before you start the process of replacing the battery in your Subaru key fob, make sure you have the following tools ready:

  • Small flat-head screwdriver
  • New CR2032 battery
  • Tweezers
  • Clean cloth

Let’s move on to the next step in this simple and practical guide.

Step 2: Identify the Key Fob Type

When it comes to replacing the battery in your Subaru key fob, identifying the key fob type is crucial. Different Subaru models may have varying key fob designs, so knowing your specific type will ensure a smooth battery replacement process.

Here are some common Subaru key fob types you might encounter:

  • Standard Key Fob: This type typically consists of two halves that can be separated to access the battery compartment.
  • Flip Key Fob: These key fobs have a flip-out key that can be detached from the main fob.
  • Proximity Key Fob: Also known as a smart key, these fobs allow for keyless entry and ignition through proximity detection.

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Before proceeding further, take a moment to examine your Subaru key fob and determine its type based on the features mentioned above. This initial step will help you navigate the battery replacement process more effectively.

Step 3: Locate the Battery Compartment

When opening your Subaru key fob to replace the battery, it’s vital to find the battery compartment. It varies depending on the key fob type, so identifying the specific location is key.

  • The Standard Key Fob typically has the battery compartment at the back.
  • For the Flip Key Fob, the battery compartment is usually underneath the metal key.
  • With the Proximity Key Fob, the battery compartment is inside and may require additional steps to access.

Find the battery compartment by observing the structure and any markings that may indicate its placement. Once you’ve located it, you’re ready to move on to the next step.

Step 4: Remove the Old Battery

So, it’s time to remove the old battery from your Subaru key fob. This step is crucial to ensure a smooth battery replacement process. Here’s how you can do it:

  1. Locate the Battery: Find the battery compartment based on your key fob type.
  2. Carefully Remove the Old Battery: It’s important to be gentle when taking out the old battery to avoid damaging the key fob.
  3. Dispose of the Old Battery Properly: Once you remove the old battery, make sure to safely dispose of it according to local regulations.
  4. Prepare for the New Battery: Before inserting the new battery, check its orientation and ensure it matches the old one.
  5. Clean the Battery Compartment: Take a moment to wipe the inside of the battery compartment if needed to ensure good contact with the new battery.
  6. Ready for a Fresh Battery: With the old battery removed, you’re all set to proceed with installing the new battery into your Subaru key fob.

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Step 5: Insert the New Battery

After successfully removing the old battery, it’s time to insert the new one into your Subaru key fob. Here’s how you can do it:

  • Check the battery orientation to make sure it’s the same as the old one.
  • Carefully place the new battery into the compartment, ensuring it’s snug and secure.
  • Avoid touching the battery contacts to prevent any interference with the connection.
  • Once the new battery is in place, reassemble the key fob by following the steps in reverse order.

Remember, proper insertion is crucial for the functionality of your key fob. Now, your Subaru key fob should be equipped with a fresh battery ready to serve you well.

Step 6: Close the Key Fob

To complete the battery replacement process, it’s essential to close the key fob properly. Here’s how to do it:

  • Gently place the back cover over the key fob’s opening.
  • Align the cover with the key fob and press down firmly to snap it into place.
  • Ensure that all the snaps on the cover are securely closed to prevent it from coming loose.
  • Once closed, give the key fob a quick check to make sure the cover is flush and properly sealed.

Having a properly closed key fob is crucial for ensuring that the internal components are protected and that the device functions correctly.


Now that you’ve followed the step-by-step guide to replace the battery in your Subaru key fob, you’re all set to enjoy seamless functionality. Remember to double-check the battery orientation, securely place the new battery, and handle it carefully to avoid any issues. Reassemble the key fob with precision, ensuring that the back cover is aligned and snapped securely in place. By following these simple steps, you’ve successfully maintained your key fob’s performance and safeguarded its internal components. Keep these tips in mind for future battery replacements to keep your Subaru key fob in top condition.

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Frequently Asked Questions

Q: Why is it important to check the battery orientation before inserting it into the Subaru key fob?

A: Checking the battery orientation ensures that it is inserted correctly, preventing damage to the key fob and ensuring proper functionality.

Q: How should the new battery be securely placed in the Subaru key fob?

A: The new battery should be positioned securely in the designated slot within the key fob to maintain proper contact for optimal performance.

Q: Why should you avoid contact with the battery contacts when replacing the battery in the key fob?

A: Avoiding contact with the battery contacts helps prevent short circuits and damage to the internal components of the key fob.

Q: What is the importance of reassembling the Subaru key fob carefully after inserting the new battery?

A: Reassembling the key fob carefully ensures that all components are correctly aligned and secured, preventing potential issues with functionality.

Q: How can you ensure that the Subaru key fob is closed correctly after replacing the battery?

A: Closing the key fob correctly involves aligning and snapping the back cover securely in place to protect the internal components and maintain proper functionality.

Battery industry professional with 5+ years of experience. Bachelor of Science in Electrical Engineering from Georgia Tech. Specializes in power systems and renewable energy.

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