Toyota Corolla Key Fob Battery Replacement Guide (2003 – 2008)

Introduction

If your Toyota Corolla key fob is not working, it might be time to replace the battery. This guide will walk you through the simple steps to replace the battery in your key fob for the 2003 to 2008 models. It’s a straightforward process that you can do at home with minimal tools.

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Energizer 2016 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield
  • Used in heart rate monitors, keyless entry, glucose monitors, toys & games
  • Important: Coin Lithium batteries are not interchangeable; Both the diameter and thickness can vary based on the cell designation; While some device battery compartments may be sized in a way that different battery types can fit in the compartment, the capacities will vary by size
  • Reliable, dependable power

Tools and Materials Needed

Before starting, gather the necessary tools and materials. You will need a flathead screwdriver and a CR2016 coin battery. If you don’t have the battery, you can easily purchase it online.

  • Flathead screwdriver
  • CR2016 coin battery

You can buy the battery on Amazon.com for convenience.

Opening the Key Fob

The first step in replacing the battery is to open the key fob. There is a small slot located at the top of the fob, right along the seam.

Follow these steps:

  1. Insert the flathead screwdriver into the slot.
  2. Twist the screwdriver gently.
  3. You will hear a crack as the fob opens.
  4. Separate the back part from the front.

Be careful while twisting the screwdriver to avoid damaging the plastic.

Removing the Old Battery

Once the key fob is open, you will see the old battery. To remove it, follow these steps:

  1. Hold the key fob with the keyring side facing up.
  2. Push on the bottom of the battery.
  3. The battery will pop out easily.

If the battery doesn’t come out easily, you can use the screwdriver to gently pry it out.

Inserting the New Battery

Now that the old battery is removed, it’s time to insert the new CR2016 battery. Make sure to follow these steps:

Ensure the positive side, marked with a plus (+), is facing up.

  1. Place the new battery into the slot.
  2. Press it down until it clicks into place.

Make sure the battery is sitting flat and securely in the slot.

Reassembling the Key Fob

After inserting the new battery, you need to reassemble the key fob. Follow these steps:

  1. Align the back cover with the front part of the key fob.
  2. Press the two halves together until they snap into place.

Ensure the key fob is securely closed before testing it.

Testing the Key Fob

Once reassembled, test the key fob to make sure it’s working correctly. Press the buttons to ensure they are responsive. If the key fob is not working, reopen it to check if the battery is correctly installed.

Sale
Energizer 2016 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield
  • Used in heart rate monitors, keyless entry, glucose monitors, toys & games
  • Important: Coin Lithium batteries are not interchangeable; Both the diameter and thickness can vary based on the cell designation; While some device battery compartments may be sized in a way that different battery types can fit in the compartment, the capacities will vary by size
  • Reliable, dependable power

Conclusion

Replacing the battery in your Toyota Corolla key fob is a simple and quick process. By following these steps, you can save time and money by doing it yourself. If you have any questions or need further assistance, feel free to leave a comment or visit FobBattery.com for more guides.

Frequently Asked Questions (FAQ)

What type of battery do I need?

You need a CR2016 coin battery for the Toyota Corolla key fob.

Do I need any special tools?

No, you only need a flathead screwdriver.

How long does the replacement take?

The entire process takes about 5-10 minutes.

Can I use a different type of battery?

No, it’s recommended to use the CR2016 battery as specified.

What if my key fob still doesn’t work?

Reopen the fob and ensure the battery is correctly installed. If it still doesn’t work, the fob might have other issues.

Is it safe to replace the battery myself?

Yes, it’s safe and easy to replace the battery yourself.

Where can I buy the battery?

You can purchase the CR2016 battery on Amazon.

Sale
Energizer 2016 Batteries (2 Pack), 3V Lithium Coin Batteries With 3-in-1 Child Shield
  • Used in heart rate monitors, keyless entry, glucose monitors, toys & games
  • Important: Coin Lithium batteries are not interchangeable; Both the diameter and thickness can vary based on the cell designation; While some device battery compartments may be sized in a way that different battery types can fit in the compartment, the capacities will vary by size
  • Reliable, dependable power

Can I get help if I encounter problems?

Yes, you can visit FobBattery.com for more help and tutorials.

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