How to Change Subaru Key Battery

1. Open the Subaru key fob using a small flathead screwdriver.
2. Remove the old battery, noting its orientation.
3. Insert the new battery, ensuring correct polarity.
4. Reassemble the key fob and test it.

Why You Need to Change Your Subaru Key Battery

The battery inside your Subaru key fob is responsible for transmitting a signal to your car so you can perform tasks such as locking and unlocking the doors or starting the engine. If the battery starts to wear out, the signal will weaken, and the key fob might stop working altogether.

By changing the Subaru key battery, you can avoid issues like:

• Difficulty locking/unlocking the car: If your key fob is unresponsive, it may be due to a low or dead battery.
• Problems starting the car: Some Subaru models require the key fob to be within a certain range to start the car. A dead battery can make this impossible.
• Weak signal range: A worn-out battery might mean you have to stand too close to your car for the key fob to work.

Changing the battery is simple, and it’s much easier than dealing with the inconvenience of a malfunctioning key fob.

When Should You Change the Subaru Key Battery?

Typically, the battery in your Subaru key fob should last between 1 to 3 years, depending on how often you use it. There are several signs that it might be time to replace the battery, including:

• Weak signal: You may notice that the range of your key fob has decreased, requiring you to be closer to your car for it to work.
• Fob is unresponsive: If pressing the buttons on the fob no longer unlocks your car or starts the engine, the battery is likely dead.
• Battery warning light: Some Subaru vehicles will display a warning message on the dashboard, notifying you that the key fob battery is low.

If you experience any of these issues, it’s time to replace the Subaru key battery.

Tools You’ll Need

Changing the battery in your Subaru key fob doesn’t require any specialized tools—just a few basic items. Here’s what you’ll need:

• Flathead screwdriver: This is used to gently pry open the key fob casing without damaging it.
• Replacement battery: Your Subaru key fob typically uses a CR2032 coin cell battery, but make sure to double-check the battery type in your owner’s manual.
• Small, soft cloth: This is optional but recommended to avoid scratching the surface of the key fob while working with it.

Once you’ve gathered these tools, you’re ready to begin.

How to Change Subaru Key Battery: Step-by-Step Guide

Changing the battery in your Subaru key fob is easy once you know the process. Follow these simple steps to replace the battery:

Step 1: Open the Subaru Key Fob

The first step is to open the key fob. Most Subaru key fobs are designed to be easily opened by using a flathead screwdriver. Look for a small seam along the edge of the key fob, where the two halves meet. Insert the flathead screwdriver into the seam and gently twist it to pry open the fob. Be careful not to force the screwdriver, as you could damage the casing. If your key fob has a small screw, use a small screwdriver to remove it before proceeding.

Step 2: Remove the Old Battery

Once you have the key fob open, you will see the battery inside. Gently lift the old battery out of its compartment. Take note of how the battery is positioned, as the new one will need to be inserted in the same direction. Most Subaru key fobs use a CR2032 coin cell battery, with the positive side facing up. Use a small flathead screwdriver or your fingers to carefully remove the old battery.

Step 3: Insert the New Battery

Now that you’ve removed the old battery, it’s time to insert the new one. Take the new CR2032 battery and insert it into the compartment, making sure that the positive side (marked with a plus sign) is facing up. Gently press the battery into place, ensuring that it fits snugly in the compartment.

Step 4: Reassemble the Key Fob

Once the new battery is securely in place, it’s time to reassemble the key fob. Carefully align the two halves of the fob and press them back together. If your fob has a screw, replace it to ensure the key fob is securely closed. Make sure there are no gaps between the two halves.

Step 5: Test the Key Fob

After reassembling the key fob, it’s important to test it to make sure it’s working properly. Stand near your Subaru and press the buttons to check if the fob locks and unlocks the doors and starts the car as expected. If the fob is not working, double-check that the battery is inserted correctly and that the fob is fully reassembled.

Common Mistakes to Avoid

While changing the Subaru key battery is straightforward, there are a few common mistakes to watch out for:

1. Using the wrong battery: Make sure to use the correct battery for your key fob. Using the wrong size or type of battery can prevent the fob from working.
2. Forgetting to test the fob: After reassembling the key fob, don’t forget to test it to ensure it’s working properly.
3. Damaging the key fob casing: Be gentle when prying the fob open to avoid cracking or damaging the plastic casing.

How to Prolong Your Subaru Key Fob Battery Life

To get the most out of your Subaru key fob battery, here are a few tips:

• Avoid extreme temperatures: Keep your key fob away from extreme heat or cold, as this can shorten the battery life.
• Don’t press the buttons unnecessarily: Pressing the buttons on the fob repeatedly will drain the battery faster. Use the fob only when needed.
• Store your key fob properly: When not in use, store the fob in a safe place to prevent accidental button presses.

By following these tips, you can help extend the life of your Subaru key fob battery.

Conclusion

Changing the Subaru key battery is a simple and affordable task that you can do yourself at home. By following the steps outlined in this guide, you can restore your key fob’s functionality and avoid the inconvenience of a dead or weak battery. Replacing the battery in your Subaru key fob is quick and easy, and it will save you both time and money.

If you’re unsure of the battery type or run into any issues during the replacement process, don’t hesitate to consult your Subaru owner’s manual or visit your local dealership for assistance. Keep your key fob working like new and enjoy the convenience it provides!