Easy Steps to Change Your Subaru WRX Key Battery

You’re ready for your next thrilling drive in your Subaru WRX, but the dreaded “low battery” warning flashes on your key fob. Don’t worry, replacing the battery is a simple process that won’t require any mechanical expertise. This guide will walk you through the steps on how to change Subaru WRX key battery, ensuring you’re back on the road in no time.

Gathering Your Tools

Before you begin, gather the following:

• New battery: A CR2032 or CR2025 lithium coin cell battery. These are readily available at most electronics stores, supermarkets, and online retailers.
• Small screwdriver: A flathead or Phillips screwdriver, depending on the type of screw holding the key fob together.
• Tweezers (optional): These can be helpful for removing the old battery.

Identifying Your Key Fob Type

Subaru WRX key fobs come in various designs. Understanding your key fob type is crucial for the next steps. Here are the two common types:

• Button-style key fob: This type features buttons for locking, unlocking, and trunk release.
• Flip-key style: This type has a built-in key blade that flips out for manual unlocking.

Changing the Battery on a Button-Style Key Fob

1. Locate the battery compartment: On most button-style key fobs, the battery compartment is located on the back side, often indicated by a small arrow or a protrusion.

2. Open the compartment: Use your screwdriver to gently pry open the compartment. There might be a small latch or a groove that you need to engage.

3. Remove the old battery: The old battery will be visible inside the compartment. Use your fingers or tweezers to carefully remove it.

4. Insert the new battery: Place the new battery into the compartment, ensuring the positive (+) side faces up.

5. Close the compartment: Gently snap the compartment closed.

6. Test the key fob: Press the buttons on your key fob to ensure it’s working correctly.

Changing the Battery on a Flip-Key Style Key Fob

1. Locate the battery compartment: On a flip-key style fob, the battery compartment is often located on the side or the bottom of the key fob.

2. Open the compartment: You’ll likely need to use a small screwdriver to pry open the compartment. Look for a small groove or latch.

3. Remove the old battery: The old battery will be visible inside the compartment. Use your fingers or tweezers to carefully remove it.

4. Insert the new battery: Place the new battery into the compartment, ensuring the positive (+) side faces up.

5. Close the compartment: Gently snap the compartment closed.

6. Test the key fob: Press the buttons on your key fob to ensure it’s working correctly.

Important Considerations:

• Battery type: Always use the correct battery type as specified in your owner’s manual. Using the wrong battery can damage your key fob.
• Polarity: Ensure the positive (+) side of the battery is facing up when you insert it.
• Key fob programming: In some cases, you might need to reprogram your key fob after replacing the battery. Consult your owner’s manual or contact your Subaru dealership for instructions.
• Disposal: Dispose of the old battery properly. Do not throw it in the trash.

Troubleshooting:

If your key fob still doesn’t work after replacing the battery, consider the following:

• Battery contact: Ensure the battery is making good contact with the terminals inside the key fob.
• Key fob damage: Check for any visible damage to the key fob, such as cracks or broken buttons.
• Programming issues: As mentioned earlier, you might need to reprogram your key fob.

Back on the Road

Now that you’ve successfully changed your Subaru WRX key battery, you’re ready to hit the road again. Remember to keep a spare battery on hand for future replacements.

Questions We Hear a Lot

1. How long does a Subaru WRX key battery last?

A Subaru WRX key battery typically lasts for 1-2 years, depending on usage.

2. Can I use a different type of battery?

No, it’s crucial to use the battery type specified in your owner’s manual. Using a different type can damage your key fob or cause it to malfunction.

3. What if I can’t find a CR2032 or CR2025 battery?

If you can’t find the recommended battery type, you can try a CR2016 battery. However, it might not fit perfectly, and you might need to use a small piece of tape to secure it in place.

4. What happens if I leave the old battery in the key fob too long?

Leaving the old battery in the key fob for an extended period can cause it to leak, potentially damaging the key fob’s internal components.

5. What should I do if my key fob still doesn’t work after replacing the battery?

If your key fob still doesn’t work, you can try reprogramming it or contacting your Subaru dealership for assistance.