How to Change the Subaru Key Fob Battery

If your Subaru key fob is showing signs of a low battery or isn't functioning as it should, you might be wondering if you can replace the battery yourself without the need for a mechanic or professional help. The answer is yes. When your key fob is acting up, it's usually a sign that the battery needs to be replaced. The thought of not being able to access your vehicle can be stressful, but changing the battery in your Subaru key fob is actually a quick and straightforward process.

To get started, you'll need a few basic tools: a flathead screwdriver and a new battery, which can be easily found at any convenience or grocery store. Once you have these items, you'll be ready to replace your Subaru key fob battery. With just a few simple steps, you'll have your key fob working like new again. So don't let a dead battery ruin your day. This guide will walk you through the steps of changing your Subaru key battery, depending on your key fob type.

What is a Subaru Key Fob

The Subaru key fob is a small, handheld device that allows you to lock and unlock your Subaru remotely. It's a convenient and practical accessory that enhances the overall driving experience. One of the main advantages of the Subaru key fob is its ability to provide added security and ensure peace of mind. With just a simple press of a button, you can lock your vehicle from far away, guaranteeing that your car and its contents are safe and secure.

Subaru Key Fob Battery Replacement

Different Subaru models may have varying key fob designs, so the process of replacing the battery can differ. To open your Subaru key fob and replace the battery, follow the steps below:

Newer Subaru Key Fob (2032 Battery)

1. On the back of the key fob, press the small silver tab to release and remove the key shank.
2. Locate the crevice between the front and back of the key fob, right beside where the key was extracted.
3. Use the key tip or a flathead screwdriver to gently twist and unfasten the key fob cover.
4. Look for a flat, round battery inside the fob. It might be on the opposite side of the transmitter circuit board.
5. Unfasten the battery from the small tabs holding it in place and insert your new 2032 battery. Make sure that the correct side is facing upwards.

Older Subaru Key Fob (2025 Battery)

1. Find the small indentation in the seam between the front and back of the key fob.
2. Insert a small flathead screwdriver into the indentation and gently twist it to open the key fob.
3. Use the screwdriver to remove the old battery and insert the new 2025 battery, ensuring it faces the correct direction.
4. Snap the two sides of the key fob back together, and you're done!

Subaru Key Fob with Exposed Metal Key with Buttons (CR 1620 Battery)

1. Identify the small indentation in the seam between the front and back of the key casing.
2. Insert a small flathead screwdriver into the indentation and gently twist to open and remove the casing.
3. Extract the smaller unit from the inside and locate the small tabs around the seams of this unit.
4. Press the tabs to open this casing and reveal the battery inside.
5. Remove and replace the battery with a new CR 1620 battery, ensuring the correct side is facing upwards.
6. Snap the battery cover back together, ensuring proper alignment.
7. Insert the smaller unit back into the key casing and snap everything closed.

How to Start Your Car with a Dead Subaru Key Fob Battery

You can still start your car if your Subaru key fob battery is dead. First, remove the key shank from the back of the key fob to unlock the driver’s side door. However, this will trigger the alarm. To disable the alarm, you have to start the car. To do this, place the key fob above the push button start and click it. This will allow you to start your car even if the key fob battery is dead.

Final Note

Changing the battery in your Subaru key fob is a simple process that you can do yourself without the need for professional help. If your key fob is showing signs of a low battery or isn't functioning properly, it's likely that the battery needs to be replaced. With just a few basic tools and a new battery, you can have your key fob working like new again in no time.