Toyota Tundra Key Fob Battery Replacement (2003 – 2006)

Introduction

If you own a Toyota Tundra from 2003 to 2006, you might find yourself needing to replace the key fob battery. This is a simple process that can be done at home with minimal tools. In this guide, I will walk you through the steps to replace the battery in your key fob.

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  • 2 pack of Energizer 2025 Batteries, 3V Lithium Coin Batteries
  • Performs in extreme temperatures from -22 F to 140 F
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Tools and Materials Needed

Before getting started, gather the necessary tools and materials. You will need the following:

  • Flathead screwdriver
  • CR2025 coin battery
  • Precision screwdriver (optional)

For convenience, you can purchase the CR2025 battery and precision screwdrivers online. Links to these items are provided in the description.

Opening the Key Fob

The first step is to open the key fob. Look at the top of the device, and you will see a small slot in the plastic. Insert your flathead screwdriver into this slot.

Step-by-Step Instructions

  1. Insert the flathead screwdriver into the slot.
  2. Twist the screwdriver to crack open the device.
  3. Set the back of the key fob aside.

Once the key fob is open, you will see the battery housed inside.

Removing the Old Battery

With the key fob open, locate the battery. There will be a small opening in one corner where you can insert a tool to pry out the battery.

Tools for Battery Removal

While you can use a regular flathead screwdriver, it might be tricky and could damage the plastic. I recommend using a precision screwdriver, a thick paper clip, or a bobby pin. These tools fit better and make the process easier.

Step-by-Step Instructions

  1. Insert the chosen tool into the opening.
  2. Push down and pry the battery out.
  3. Remove the old battery.

Inserting the New Battery

Now that the old battery is removed, it’s time to insert the new one. Ensure the positive side of the new battery is facing up.

Step-by-Step Instructions

  1. Take the new CR2025 battery.
  2. Slide it into the battery slot.
  3. Click it into place.

Closing the Key Fob

After the new battery is securely in place, you need to reassemble the key fob. This is a straightforward process.

Step-by-Step Instructions

  1. Align the two halves of the key fob.
  2. Press them together until they click.

Once the key fob is closed, test it to ensure it works correctly. The light on the key fob should come on, indicating the battery is functioning.

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Energizer Battery, 3V Lithium Coin Cell Batteries, Packaging May Vary, Black, 2 Count
  • 2 pack of Energizer 2025 Batteries, 3V Lithium Coin Batteries
  • Performs in extreme temperatures from -22 F to 140 F
  • Long-lasting choice for calculators, scales and remote batteries

Conclusion

Replacing the battery in your Toyota Tundra key fob is a quick and easy task. With just a few tools and a new CR2025 battery, you can have your key fob working like new in no time. If you found this guide helpful, feel free to leave a comment or give it a like.

Additional Resources

If you need to replace the battery in another key fob, check out our YouTube channel. We have tutorials for a wide range of devices from various makes and models. You can also find more information on our website.

Frequently Asked Questions

What type of battery does the Toyota Tundra key fob use?

The Toyota Tundra key fob uses a CR2025 coin battery.

Where can I buy the CR2025 battery?

You can purchase the CR2025 battery online.

Sale
Energizer Battery, 3V Lithium Coin Cell Batteries, Packaging May Vary, Black, 2 Count
  • 2 pack of Energizer 2025 Batteries, 3V Lithium Coin Batteries
  • Performs in extreme temperatures from -22 F to 140 F
  • Long-lasting choice for calculators, scales and remote batteries

Do I need a precision screwdriver?

A precision screwdriver is recommended but not required. You can also use a thick paper clip or a bobby pin.

How do I know if the battery replacement was successful?

If the light on the key fob comes on after reassembly, the battery replacement was successful.

Can I find tutorials for other key fobs?

Yes, we have tutorials for various key fobs on our YouTube channel and website.

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