How to Replace the Battery in Your Toyota Tundra Key Fob (2019 – 2021)

Introduction

Replacing the battery in your Toyota Tundra key fob is a straightforward process that you can easily do at home. In this guide, I’ll walk you through the steps to change the internal battery of your key fob. All you’ll need is a new CR2032 coin battery and a flathead screwdriver.

Tools and Materials Needed

Before you start, make sure you have the following tools and materials:

• CR2032 coin battery
• Flathead screwdriver

You can purchase the CR2032 battery online if you don’t already have one. It’s an affordable and readily available option.

Step 1: Remove the Internal Key

The first step in replacing the battery is to remove the internal key from your key fob. Here’s how you do it:

1. Hold down the button on the side of the key fob.
2. Pull the internal key out while holding the button.

Once the internal key is removed, you’ll see the keyhole and a small perpendicular slot next to it.

Step 2: Open the Key Fob

Next, you’ll need to open the key fob to access the battery inside. Follow these steps:

1. Insert a flathead screwdriver into the perpendicular slot next to the keyhole.
2. Twist the screwdriver gently to crack open the key fob.
3. Separate the two halves of the key fob and set them aside.

Be careful not to damage any internal components while opening the key fob.

Step 3: Remove the Circuit Board

With the key fob open, you’ll see the circuit board inside. To access the battery, you’ll need to remove the circuit board:

1. Gently lift the circuit board from the sides.
2. Avoid touching the back of the circuit board to prevent any damage.

Once the circuit board is removed, you’ll see the battery on the other side.

Step 4: Remove the Old Battery

Now it’s time to remove the old battery from the key fob. Here’s how:

1. Locate the small area at the top of the battery where you can insert your flathead screwdriver.
2. Insert the corner of the screwdriver into the small area.
3. Push and wiggle the screwdriver to slide behind the battery.
4. Gently pry the battery out.

Be sure to handle the old battery with care to avoid any accidents.

Step 5: Insert the New Battery

With the old battery removed, you can now insert the new CR2032 battery:

1. Ensure the positive side of the battery is facing up.
2. Place the new battery in the slot, aligning it with the circular indentation in the plastic.
3. Press the battery into place until you hear a click.

Make sure the battery is securely in place before proceeding.

Step 6: Reassemble the Key Fob

Now that the new battery is in place, it’s time to reassemble the key fob:

1. Place the circuit board back into the key fob, ensuring it is facing up.
2. Align the two halves of the key fob.
3. Press them together until you hear a click, indicating they are securely connected.
4. Reinsert the internal key into the key fob.

Once reassembled, your key fob should be good to go with a fresh battery.

Conclusion

Replacing the battery in your Toyota Tundra key fob is a simple task that can save you time and money. By following these steps, you can ensure your key fob continues to function properly. If you found this guide helpful, feel free to let me know in the comments. For more battery replacement guides, visit our website at fobbattery.com.

FAQ

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

The Toyota Tundra key fob uses a CR2032 coin battery.

How often should I replace my key fob battery?

It’s recommended to replace the key fob battery every 1-2 years, depending on usage.

What should I do if my key fob stops working after replacing the battery?

Ensure the battery is installed correctly with the positive side facing up. If it still doesn’t work, try resetting the key fob or consult your vehicle’s manual.

Can I use a different type of battery?

It’s best to use the recommended CR2032 battery to ensure compatibility and proper function.

Where can I buy a CR2032 battery?

You can purchase a CR2032 battery online, including on Amazon, or at most electronic and hardware stores.