How to Change Battery on Subaru Key: Complete Maintenance Guide

Ever found yourself locked out of your Subaru because of a dead key fob battery? Frustrating, right? Well, you’re not alone. Many Subaru owners face this inconvenience at some point. But worry not, because in this article, you’ll discover a simple solution that’ll save you time and hassle.

Imagine being able to replace your Subaru key’s battery quickly and without any outside help. No more last-minute trips to the dealership or struggling to unlock your car. With just a few easy steps, you can learn how to change the battery on your Subaru key fob like a pro. Stay tuned to find out how this knowledge can empower you and make your life easier.

Overview of Subaru Key Fob Battery

When it comes to your Subaru key fob, understanding how to replace the battery is essential. Here’s a breakdown to help you navigate this process smoothly:

  • Key Fob Importance: Your Subaru key fob is more than just a convenience; it provides secure access to your vehicle.
  • Battery Life: The key fob battery life varies but usually lasts 2-4 years, depending on usage.
  • Signs of Low Battery: A weaker signal, unresponsive buttons, or inconsistent function can indicate a low battery.
  • Key Fob Design: Subaru key fobs usually have a small screw that allows for easy battery replacement.
  • Compatibility: Ensure you have the correct battery type for your specific key fob model.

Exploring and understanding these key points will help you tackle the battery replacement process with confidence.

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Tools Required for Battery Replacement

When it comes to replacing the battery in your Subaru key fob, you won’t need a vast array of tools. Here are the essential items you’ll need to complete the task efficiently:

  • Small flat-head screwdriver: You’ll use this tool to safely open the key fob without causing damage.
  • Replacement battery: Make sure to have the correct type of battery for your specific Subaru key fob model. Most Subaru key fobs use CR1620 or CR2032 batteries.
  • Tweezers or needle-nose pliers: These tools will come in handy when handling the small battery with precision.
  • Clean cloth: It’s always good to have a clean cloth nearby to wipe down the key fob or your hands during the replacement process.

Now that you have gathered these basic tools, you’re well-prepared to proceed with replacing the battery in your Subaru key fob.

Step-by-Step Guide to Changing the Battery

Changing the battery on your Subaru key fob is a straightforward task that you can easily accomplish with the right tools and a little bit of know-how. Follow these simple steps:

  • Step 1: Ensure you have all the necessary tools: a small flat-head screwdriver, the correct replacement battery type (CR1620 or CR2032), tweezers or needle-nose pliers, and a clean cloth.
  • Step 2: Locate the small notch on the side of your key fob and use the flat-head screwdriver to gently pry it open.
  • Step 3: Once the key fob is open, use the tweezers or needle-nose pliers to carefully remove the old battery.
  • Step 4: Take the new battery and insert it into the key fob with the positive side facing up.
  • Step 5: Close the key fob by carefully snapping the two halves back together until you hear a click.
  • Step 6: Test your key fob to ensure that the new battery is working correctly.

By following these simple steps, you can quickly and easily change the battery on your Subaru key fob and get back to using it without any issues. Remember to dispose of the old battery properly and keep your key fob clean for optimal performance.

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Tips and Tricks for Maintaining Your Subaru Key Fob

To keep your Subaru key fob in top condition, here are some handy tips and tricks for maintenance:

  • Regular Cleaning: Wipe the key fob with a clean cloth occasionally to remove dirt and debris that can affect its performance.
  • Avoid Extreme Temperatures: Extreme hot or cold temperatures can impact the battery life of your key fob. Store it in moderate temperature environments.
  • Check Button Functionality: Periodically test all the buttons on your key fob to ensure they are working correctly.
  • Prevent Water Damage: Be cautious around water to avoid damaging the internal components of the key fob.
  • Keep Spare Batteries:It’s wise to have spare batteries for your Subaru key fob ready in case it unexpectedly runs out of power.
  • Proper Storage: Store your key fob away from electronics or other devices that generate magnetic fields.
  • Key Fob Cover: Consider using a protective cover for your key fob to prevent physical damage and wear.

Quick Tip
If your key fob stops working after a battery replacement, try reinserting the battery or testing with another new battery to troubleshoot the issue.

These simple tips will help maintain the functionality of your Subaru key fob and ensure you’re always ready to unlock and start your vehicle hassle-free.

Testing the New Battery and Ensuring Proper Functionality

Now that you’ve replaced the battery in your Subaru key fob, it’s essential to ensure everything works as it should. Follow these steps to test the new battery and ensure proper functionality:

  • Reassembly: Put the key fob back together by following the reverse of the disassembly steps.
  • Check Button Responsiveness: Press each button on the key fob to confirm it’s working correctly.
  • Key Fob Range: Test the range by using the key fob from different distances.
  • Lifespan: Keep track of how long the new battery lasts for future replacements.
  • Spare Battery: Always keep spare batteries on hand for emergencies.

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Remember, a properly functioning key fob is key to conveniently unlocking and locking your Subaru.


That’s it! By following these simple steps and maintenance tips, you can easily change the battery in your Subaru key fob and keep it working smoothly. Remember to test the new battery, check button responsiveness, monitor battery life, and have spare batteries handy. A well-functioning key fob is key to effortlessly unlocking and locking your Subaru. Keep up with these maintenance practices to ensure your key fob’s longevity and reliability. Happy driving with your perfectly working key fob!

Frequently Asked Questions

How do I change the battery in my Subaru key fob?

To change the battery in your Subaru key fob, locate the battery compartment, typically found by removing the key ring. Replace the old battery with a new one, ensuring correct polarity. Put the key fob back together and test its functionality.

How can I maintain my Subaru key fob?

Maintain your Subaru key fob by keeping it clean, avoiding extreme temperatures, checking button functionality regularly, preventing water damage, using a key fob cover, and storing it properly.

What should I do if my key fob stops working after a battery replacement?

If your key fob stops working after a battery replacement, troubleshoot by checking the battery’s correct placement, reassembling the key fob correctly, and ensuring button responsiveness. Test the key fob range and monitor the battery lifespan.

Why is a properly functioning key fob important for my Subaru?

A properly functioning key fob is crucial for conveniently locking and unlocking your Subaru. Test the key fob range, monitor battery life, and keep spare batteries on hand for emergencies.

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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