Unleash the Power of Your Subaru Key: How to Replace Its Key Fob Battery in 5 Easy Steps

Are you having trouble with your Subaru key fob? Is it not responding to your commands? One of the most common reasons for a non-responsive Subaru key fob is a dead battery. Luckily, replacing the battery is an easy fix. In this article, we’ll explain everything you need to know about the type of battery your Subaru key takes and how to replace it in just 5 easy steps.

Types of Subaru Keys

Subaru produces two types of keys: proximity keys and traditional remote-control keys. Proximity keys are also known as smart keys or push-button start keys. These keys give you hands-free access to your car through an electronic key fob. On the other hand, traditional remote-control keys require physical contact with the car lock to unlock or lock the car.

Type of Battery Needed for Your Subaru Key

The type of battery you need for your Subaru key depends on the type of key you have.

Subaru Proximity Key
If you have a proximity key, the battery you need is a CR2032. This is a 3-volt lithium coin cell battery. It is a common battery that is relatively easy to find. You can purchase it from most convenience stores, hardware stores, or online.

Subaru Remote-Control Key
If you have a traditional remote-control key, the battery you need is a CR1620. This is also a 3-volt lithium coin cell battery that’s readily available in stores.

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How to Replace Your Subaru Key Battery in 5 Easy Steps

  1. First, remove the key blade.
  2. Using the key blade, locate and push the release button on the side of the key fob.
  3. While holding down the release button, use a small flathead screwdriver to gently pry the two halves of the key fob apart.
  4. Remove the old battery and replace it with the new battery. Ensure that the battery is properly aligned before closing the key fob.
  5. Reattach the two halves of the key fob and push them together until they click. Finally, slide the key blade back into the key fob.

Congratulations! You have successfully replaced your Subaru key battery.

Troubleshooting Tips

If you have followed the replacement steps and your Subaru key fob still isn’t working, there are a few other issues you can troubleshoot. Here are some of the most common issues and how to solve them:

  1. Check to make sure the battery is inserted correctly in the key fob. Sometimes if the battery isn’t properly inserted, the key fob may not work.
  2. Reset the key fob by using it to start the car. Insert the key fob into the ignition and turn it to the "on" position. Wait for 10-15 minutes, then turn off the car and remove the key fob. Try using the key fob again.
  3. Replace the key fob if none of these steps solve the problem. In some cases, the key fob may need to be replaced entirely.


Q1. What do I do if my Subaru key fob is still not working after replacing the battery?
You can try troubleshooting it by inserting the battery correctly or resetting the key fob. However, if these steps do not work, the key fob may need to be replaced.

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Q2. Why won’t my Subaru key fob work after I replaced the battery?
If your Subaru key fob is still not working after replacing the battery, it may be due to a deeper issue that needs to be looked at by your mechanic.


Replacing your Subaru key fob battery is an easy and quick fix. Remember to purchase the correct type of battery for your key type. Follow the five steps outlined in this article, and your key fob will be working like new in no time.

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Alton Brobst

As a longtime Subaru enthusiast, Alton brings a wealth of knowledge and experience to our blog. From his early days of tinkering with engines to his current role as a certified Subaru technician, Alton has seen it all when it comes to Subarus. When he's not working on cars, he enjoys hiking and exploring the great outdoors.

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