How to Replace the Battery in a Toyota 4Runner Key Fob (1999 – 2004)

Introduction

Changing the battery in your Toyota 4Runner key fob might seem daunting, but it’s a straightforward process. In this guide, I’ll walk you through the steps to replace the battery yourself at home. You only need a flathead screwdriver and a new CR2016 battery.

Sale
Energizer 2016 Batteries, 3 Volt Battery Lithium Coin, 2 Count
  • 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

Gather Your Tools

Before you start, make sure you have the following items:

  • Flathead screwdriver
  • CR2016 battery

If you need a new battery, you can purchase one online. Check the description box for a link to buy the CR2016 battery at the best price.

Opening the Key Fob

The first step is to open the key fob. Look at the top of the device where you’ll find a small slot in the plastic. Insert your flathead screwdriver into this slot.

Gently twist the screwdriver until the plastic case cracks open. Be careful not to use too much force to avoid damaging the key fob.

Once the back piece of plastic is loose, remove it and set it aside. You’ll now see the old battery inside the key fob.

Removing the Old Battery

Next, use the same flathead screwdriver to remove the old battery. There are two small indentations at the top of the battery compartment. Insert the corner of your flathead screwdriver into one of these indentations.

Gently pry the battery up. It should pop out easily. You can then remove it with your fingers.

Dispose of the old battery properly. Batteries should not be thrown in regular trash due to their harmful chemicals.

Inserting the New Battery

Now, take your new CR2016 battery. Make sure the positive side (the one with the text) is facing up.

Place the new battery into the compartment and press it down until it clicks into place. Ensure that it sits securely and is properly aligned.

Closing the Key Fob

After inserting the new battery, take the back piece of plastic you removed earlier. Place it back onto the key fob, aligning it correctly with the rest of the device.

Press the two halves of the key fob together until they click. This ensures that the key fob is securely closed and ready for use.

Testing the Key Fob

Once you’ve replaced the battery and closed the key fob, it’s time to test it. Stand near your car and press any button on the key fob.

If the car responds, congratulations! You’ve successfully replaced your key fob battery. If not, ensure the battery is correctly inserted and the key fob is properly closed.

Sale
Energizer 2016 Batteries, 3 Volt Battery Lithium Coin, 2 Count
  • 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 4Runner key fob is a simple task that you can do at home. With just a flathead screwdriver and a new CR2016 battery, you can save time and money by avoiding a trip to the dealership.

I hope this guide was helpful. If you have any questions or need further assistance, feel free to leave a comment or visit our website for more tutorials.

Frequently Asked Questions (FAQ)

What type of battery does the Toyota 4Runner key fob use?

The Toyota 4Runner key fob uses a CR2016 battery.

Where can I buy a CR2016 battery?

You can purchase a CR2016 battery on Amazon.

Sale
Energizer 2016 Batteries, 3 Volt Battery Lithium Coin, 2 Count
  • 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

Do I need any special tools to replace the key fob battery?

No special tools are needed. A regular flathead screwdriver will suffice.

How do I open the key fob?

Insert a flathead screwdriver into the small slot at the top of the key fob and twist gently to crack it open.

How do I dispose of the old battery?

Dispose of the old battery properly. Do not throw it in regular trash. Batteries contain harmful chemicals and should be recycled.

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

Ensure the battery is correctly inserted and the key fob is securely closed. If it still doesn’t work, the key fob may have other issues.

Can I replace the key fob battery myself?

Yes, replacing the key fob battery is a simple task that you can do at home with minimal tools.

How often should I replace the key fob battery?

Key fob batteries typically last 1-2 years. Replace the battery when you notice the key fob’s range decreasing or if it stops working.

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