Save Money and DIY: How to Change the Battery on Your Subaru Key

If you own a Subaru car that requires a key to start the engine, you might have noticed that the battery on the key is running low. Although you could take it to the dealership or a car mechanic to have it replaced, it can be costly. Luckily, replacing the battery on your Subaru key is a quick and easy process that requires no technical skills. In this article, we will guide you step-by-step on how to change the battery on your Subaru key and save yourself some money.

Why Change Your Subaru Key Battery

Your Subaru’s key battery is an essential component that can wear out with time and use. If the battery dies, you might find yourself unable to start your car, especially if the keyless entry system is not working. So, it’s best to replace the battery before it runs out completely. A dead battery also means that you have to get a new key from the dealership, which can be costly and time-consuming.

Method: How to Change the Battery on Your Subaru Key

Step 1: Gather the Required Tools

Before you start the replacement process, you will need some tools to access the battery compartment. These tools include:

  • Subaru Key
  • Small flat-head screwdriver
  • CR 1620 battery (you can purchase them at a local store or online)
See also  The Ultimate Guide: How Much Transmission Fluid Does a 2003 Subaru Baja Need?

Step 2: Open the Subaru Key

To access the battery compartment, you need to open the Subaru key. Here are the steps to follow:

  1. Look for the small slot on the side of the key. This is the slot you will use to open the key.
  2. Insert the small flat-head screwdriver into the slot and gently twist it.
  3. The key will separate into two parts. Make sure to keep the parts organized.

Step 3: Remove the Old Battery

Once you have opened the key, you can remove the old battery. Here are the steps to follow:

  1. Use the screwdriver to gently pry the battery out of its compartment.
  2. Be careful not to damage the battery or the components around it.

Step 4: Install the New Battery

Now that you have removed the old battery, it’s time to install the new one. Here are the steps to follow:

  1. Look for the positive (+) sign on the battery. This indicates the side that should be facing up when installing the new battery.
  2. Align the new battery with the compartment and gently press it in. Make sure the battery snaps in place.

Step 5: Reassemble the Subaru Key

Once you have installed the new battery, it’s time to reassemble the Subaru key. Here are the steps to follow:

  1. Align the two parts of the key and gently snap them together.
  2. Make sure there are no gaps or misalignments between the two parts.
  3. Test the key to make sure it’s functioning correctly.

Tips and Common Mistakes to Avoid

  • Avoid using excessive force to pry open the Subaru key, as this can damage the key or the components inside it.
  • When removing the old battery, note the position and orientation of the battery to ensure correct placement of the new one.
  • If the new battery fails to work, try removing and reinserting it to make sure it’s properly aligned.
See also  How to Accurately Determine the Color of Your Subaru: Tips and Tricks


Replacing the battery on your Subaru key is a simple and easy process that can save you time and money. By following the steps outlined above, you can replace the battery in just a few minutes and prevent any issues that may arise from a dead battery. With these easy-to-follow instructions and a small investment in a CR 1620 battery, you can be back on the road in no time.

Avatar photo

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.

Recommended Articles