Is your 2021 Toyota Corolla key fob not working as reliably as it used to? You might be facing a common issue: a dead or dying key fob battery. Like any battery, the one in your Toyota Corolla key fob has a limited lifespan. Fortunately, replacing it is a straightforward process that you can easily do yourself. This guide, brought to you by the experts at Keyfobx.com, will walk you through each step of replacing your 2021 Toyota Corolla Key Fob Battery and also provide information on when you might need a complete key fob replacement.
Step-by-Step Guide to Replacing Your 2021 Toyota Corolla Key Fob Battery
Before heading to the dealership or scheduling service, try replacing the battery yourself. It’s a quick and cost-effective solution. Here’s how to do it:
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Identify the Key Fob Type: Toyota Corolla key fobs can vary slightly depending on the trim and features. However, the battery replacement process is generally similar across models. The most common type for the 2021 Corolla is the standard key fob with physical buttons.
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Gather Your Tools and Supplies: You’ll need a few simple tools:
- A new CR2032 3V battery. This is the standard battery for most Toyota key fobs, including the 2021 Corolla. You can purchase these at most drug stores, supermarkets, electronics stores, and online retailers.
- A small flathead screwdriver or a similar thin, flat tool. A small coin can also work in some cases.
- A soft cloth or paper towel to protect the fob from scratches.
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Remove the Mechanical Key: Locate the small release button on your key fob. It’s usually a small metallic button situated near the key ring. Press and hold this button while gently pulling out the mechanical key from the fob. Set the key aside in a safe place.
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Open the Key Fob Casing: Once the mechanical key is removed, you’ll see a small slot or notch where the key was inserted. This is where you’ll insert your flathead screwdriver or prying tool. Carefully insert the tip of your tool into the slot and gently twist. This should start to separate the two halves of the key fob casing. Work your tool around the seam of the fob to carefully pry it open. Avoid using excessive force, as you could damage the plastic casing.
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Access the Battery Compartment: With the key fob open, you’ll see the internal components, including the circuit board and the battery. The battery is usually located in a small compartment and might be held in place by small clips or a retaining mechanism.
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Remove the Old Battery: Take note of the orientation of the old battery before removing it. Usually, the positive (+) side faces upwards. Gently pry the old battery out of its compartment. You can use your fingertip or the edge of your small screwdriver, being careful not to damage the surrounding components.
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Install the New CR2032 Battery: Take your new CR2032 battery and install it in the battery compartment, ensuring the correct orientation (positive side up, matching the orientation of the old battery). Press it firmly into place until it’s securely seated.
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Reassemble the Key Fob: Carefully align the two halves of the key fob casing and press them back together until they snap securely into place. Ensure there are no gaps and the casing is fully closed.
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Reinsert the Mechanical Key: Slide the mechanical key back into its slot until it clicks and locks into place.
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Test Your Key Fob: Test the buttons on your key fob to ensure they are working correctly. Try locking and unlocking your 2021 Toyota Corolla remotely, as well as testing the panic button and trunk release (if applicable).
When Do You Need a Full 2021 Toyota Corolla Key Fob Replacement?
While a battery replacement will solve most key fob issues, there are situations where you might need a complete 2021 Toyota Corolla key fob replacement. These include:
- Lost or Damaged Key Fob: If you’ve lost your key fob or it has been severely damaged (e.g., crushed, water damaged), battery replacement won’t be enough.
- Malfunctioning Key Fob Buttons: If the buttons on your key fob are unresponsive even after a battery replacement, there might be an issue with the internal circuitry, requiring a replacement.
- Key Fob Not Programming: In rare cases, the key fob itself might become faulty and lose its programming. If reprogramming attempts fail, a new key fob is necessary.
If you suspect you need a full key fob replacement, it’s best to contact your local Toyota dealership’s parts department. They can assist you in ordering a new 2021 Toyota Corolla key fob and programming it to work with your vehicle. Keep in mind that key fob replacement and programming usually require specialized equipment and are best handled by trained professionals.
Purchasing a Replacement 2021 Toyota Corolla Key Fob Battery
As mentioned earlier, CR2032 batteries are widely available. You can purchase them at:
- Drug Stores and Pharmacies: Stores like Walgreens, CVS, and Rite Aid usually carry CR2032 batteries in their battery or electronics sections.
- Supermarkets: Many supermarkets, such as Walmart, Target, and Kroger, also stock these batteries.
- Electronics Stores: Stores specializing in electronics like Best Buy or Batteries Plus Bulbs will definitely have CR2032 batteries.
- Online Retailers: Amazon, eBay, and other online retailers offer a wide selection of CR2032 batteries, often at competitive prices.
When purchasing, ensure you are buying a CR2032 3V battery to guarantee compatibility with your 2021 Toyota Corolla key fob.
Let Keyfobx.com Be Your Key Fob Resource
Replacing your 2021 Toyota Corolla key fob battery is a simple task that can save you time and money. By following these steps, you can quickly restore the functionality of your key fob. For more helpful tips and information on key fobs, including troubleshooting and replacements, visit keyfobx.com, your trusted resource for all things key fobs.
