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

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how to replace the Subaru key fob battery


Learn how to replace the Subaru key fob battery in a few simple steps. Keep your key fob functioning optimally with this DIY guide.Are you struggling with how to replace the Subaru key fob battery? Don’t worry; this comprehensive guide will walk you through the process of replacing the key fob battery for your Subaru vehicle. We’ll cover everything from understanding key fobs to step-by-step instructions on how to replace the Subaru key fob battery. By the end, you’ll be equipped with the knowledge to keep your key fob working smoothly and efficiently.

Understanding Subaru Key Fobs

On how to replace the Subaru key fob battery,Key fobs have become an essential part of modern vehicle security and convenience systems. Let’s delve into what a key fob is and why it’s important for your Subaru.

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What is a Key Fob?

A key fob is a small, handheld device that allows you to remotely control various functions of your Subaru vehicle. It typically includes buttons for locking and unlocking the doors, opening the trunk, and even starting the engine remotely.

Importance of Subaru Key Fobs

Subaru key fobs offer convenience and enhance the security of your vehicle. With the press of a button, you can effortlessly lock or unlock your car, eliminating the need to fumble for traditional keys. Additionally, key fobs provide an extra layer of protection against theft, thanks to their advanced encryption technology on how to replace the Subaru key fob battery.

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Signs of a Low Key Fob Battery

Before diving into the battery replacement process, it’s essential to identify the signs of a low key fob battery. Here are some common indicators that your Subaru key fob battery is running low:

  1.  Unresponsive buttons
  2.  Reduced range for remote functions
  3.  Inconsistent locking or unlocking

Replacing the Subaru Key Fob Battery

Now that you’ve recognized the signs on how to replace the Subaru key fob battery, it’s time to replace it. Let’s go through the tools required and a step-by-step guide to help you accomplish this task.

Tools Required

To replace the Subaru key fob battery, you’ll need the following tools:

  1. – Small flat-head screwdriver or a coin
  2. – Replacement battery (check your vehicle’s manual for the appropriate battery type)

Step-by-Step Guide

Follow these steps on how to replace the Subaru key fob battery:

1. Locate the small notch on the side of your key fob.

2. Insert the flat-head screwdriver or coin into the notch and gently twist to separate the two halves of the key fob.

3. Once the key fob is open, carefully remove the old battery.

4. Insert the new battery into the designated slot, ensuring the positive and negative sides are correctly aligned.

5. Reattach the two halves of the key fob, making sure they fit securely.

6. Test the key fob by pressing the buttons to verify if the new battery is functioning correctly.

Tips for Extending Key Fob Battery Life

To maximize the lifespan of your Subaru key fob battery, follow these simple tips:

Battery-Saving Practices

  1. – Avoid excessive button presses when not needed.
  2. – Keep the key fob away from extreme temperatures.
  3. – Use manual key entry as an alternative when convenient.

Regular Maintenance

  1. – Clean the key fob’s exterior with a soft cloth regularly.
  2. – Inspect the battery compartment for any signs of corrosion or damage.

Seeking Professional Assistance

If you encounter any difficulties during the battery replacement process or prefer professional assistance, don’t hesitate to contact your nearest Subaru dealership or an authorized automotive locksmith. They have the expertise to ensure a smooth and accurate on how to replace the Subaru key fob battery.


Congratulations! You’ve learned how to replace the Subaru key fob battery and discovered valuable tips to extend its lifespan. With this newfound knowledge, you can keep your key fob functioning optimally and enjoy the convenience and security it provides.


1.How often should I replace the Subaru key fob battery?

On average, Subaru key fob batteries last around 1-2 years. However, it’s recommended to replace the battery if you notice any signs of a low battery.

2. Can I use any battery for my Subaru key fob?

No, it’s crucial to use the specific battery type recommended by Subaru for your key fob. Consult your vehicle’s manual for the appropriate battery information.

3. Are there any programming steps required after replacing the key fob battery?

In most cases, battery replacement does not require any reprogramming. However, if you experience any issues with key fob functionality after replacement, consult your vehicle’s manual for programming instructions.

4. Can I replace the Subaru key fob battery myself?

Yes, replacing the key fob battery is typically a simple task that can be done by following the provided instructions. However, if you’re unsure or uncomfortable, seek professional assistance.

5.How do I properly dispose of the old key fob battery?

Key fob batteries contain hazardous materials, so it’s important to dispose of them properly. Many local recycling centers or automotive stores have designated collection points for used batteries. Be sure to follow your local regulations for battery disposal.

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