Is your 2015 Toyota Corolla key fob not working as reliably as it used to? It might be time for a battery replacement. Like any battery, the one in your key fob will eventually need to be replaced. Luckily, changing the battery in your 2015 Toyota Corolla key fob is a straightforward process you can easily do yourself. This guide will walk you through identifying the correct battery type and replacing it, ensuring your key fob is back in top shape.
Knowing the right battery for your 2015 Toyota Corolla key fob is the first step. You’ll need a CR2032 3V lithium battery. This is a common type of coin cell battery and readily available at most drug stores, electronic stores, and online retailers. Using the correct battery type is crucial for the proper functioning and longevity of your key fob. Let’s get started with the replacement process.
Step-by-Step Toyota Corolla Key Fob Battery Replacement
Replacing the battery in your 2015 Toyota Corolla key fob is easier than you might think. Follow these simple steps to get your key fob working again:
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Remove the Mechanical Key. Locate the small release button on your key fob. It’s usually a small metal button situated near the key ring loop. Press and hold this button while gently pulling out the mechanical key from the fob. This key is a backup to manually unlock your car door.
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Open the Key Fob Casing. After removing the key, you’ll notice a small slot or notch where the key was inserted. This is where you’ll need to gently pry open the key fob. Use a small flathead screwdriver or a thin, sturdy plastic tool (like a guitar pick or plastic opening tool) to carefully insert into the slot. Gently twist the screwdriver or tool to separate the two halves of the key fob casing. Take your time and avoid applying excessive force to prevent damage to the plastic.
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Access the Circuit Board and Battery. Once the fob is open, you’ll see the internal components. In most 2015 Toyota Corolla key fobs, the battery is located on the back of the green circuit board. Carefully lift or maneuver the circuit board to access the battery compartment. Be gentle when handling the circuit board to avoid damaging any of the electronic components.
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Identify and Remove the Old Battery. Take note of how the old battery is positioned in the compartment – specifically which side is facing up (+ or -). This will ensure you install the new battery correctly. The battery is usually held in place by small clips. You can gently pry the battery out using your fingertip or the edge of a small tool.
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Install the New CR2032 Battery. Take your new CR2032 battery and install it in the battery compartment, ensuring the polarity (+ and – sides) matches the orientation of the old battery you just removed. You should feel the battery snap into place under the retaining clips.
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Reassemble the Key Fob. Carefully place the circuit board back into its position within the fob casing. Align the two halves of the key fob casing and press them firmly together until they snap securely shut. Ensure there are no gaps and the casing is completely closed.
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Reinsert the Mechanical Key. Slide the mechanical key back into its slot in the key fob until it clicks into place.
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Test Your Key Fob. Test the buttons on your key fob to ensure they are now working correctly. Try locking and unlocking your doors remotely, and if your vehicle has remote start, test that function as well. If everything works as expected, you’ve successfully replaced your 2015 Toyota Corolla key fob battery!
Tips and Considerations
- Battery Availability: CR2032 batteries are widely available. You can purchase them at most local stores that sell batteries, or order them online. Consider keeping a spare battery at home so you’re prepared for future replacements.
- Gentle Handling: Be gentle throughout the battery replacement process, especially when opening the key fob and handling the internal circuit board. Avoid using excessive force, which could damage the components.
- Polarity Matters: Ensure you install the new battery with the correct polarity. Incorrect installation will prevent the key fob from working. The positive (+) side of the battery is usually marked.
- If Your Key Fob Still Doesn’t Work: If you’ve replaced the battery and your key fob still isn’t functioning, there might be another issue. Try cleaning the battery contacts inside the key fob with a cotton swab and a bit of rubbing alcohol. If problems persist, you may need to consider key fob reprogramming or a replacement from a Toyota dealership or qualified automotive locksmith.
Replacing the battery in your 2015 Toyota Corolla key fob is a simple maintenance task that can save you time and money. By following these steps and using the correct CR2032 battery, you can keep your key fob working reliably for years to come.
