Is your Mazda CX-5 2020 key fob acting up? Are you experiencing frustrating moments where the buttons seem unresponsive, or the operation indicator light refuses to flash? It might be time to consider a key fob battery replacement. Like any battery, the one in your key fob has a limited lifespan and will eventually need replacing. Ignoring these warning signs can lead to your key fob becoming completely unusable, leaving you in a potentially inconvenient situation. This comprehensive guide will walk you through the process of replacing your Mazda Cx 5 2020 Key Fob Battery yourself, ensuring you can get back on the road with a fully functional remote.
Recognizing the Signs of a Low Key Fob Battery
Before your key fob completely dies, your Mazda CX-5 2020 will likely give you some subtle hints that the battery is running low. Being aware of these signs can help you proactively replace the battery and avoid any last-minute hassles. Here are the common indicators to watch out for:
- Dashboard Warning Light: Keep an eye on your instrument cluster. If you notice the KEY indicator light (green) flashing for approximately 30 seconds after switching off the engine, this is a clear signal. For vehicles with a Type A instrument cluster, you might even see specific messages displayed.
- Unresponsive Buttons: If you press the buttons on your key fob and the system doesn’t respond – meaning your car doesn’t lock/unlock, and the operation indicator light on the fob itself remains dark – a dead battery is the prime suspect.
- Reduced Operational Range: Have you noticed you need to be much closer to your Mazda CX-5 for the key fob to work? A significantly reduced operational range is another telltale sign of a weakening battery.
Ignoring these symptoms can lead to complete key fob failure. Replacing your mazda cx 5 2020 key fob battery at the first sign of trouble is a simple preventative measure.
Essential Precautions Before You Begin
While replacing your mazda cx 5 2020 key fob battery is a straightforward process, it’s essential to take certain precautions to avoid damaging your key fob or encountering any safety issues. Before you start, please read and understand these crucial warnings:
- Correct Battery Installation: Ensure you install the new battery with the correct polarity (positive side up). Incorrect installation can lead to battery leakage and damage your key fob’s internal components.
- Handle with Care: When changing the battery, be extremely careful not to touch any internal circuitry or electrical terminals. Avoid bending the terminals or allowing dirt to enter the transmitter, as this could cause damage.
- Explosion Risk: Incorrect battery replacement can create a risk of explosion. Always use the specified battery type and follow the instructions precisely.
- Safe Battery Disposal: Dispose of the old battery responsibly. Do not throw it in fire or water, disassemble it, or crush it. Instead, insulate the battery terminals with tape and dispose of it according to local regulations for battery disposal.
- Use the Right Battery Type: It is critical to replace your old battery with the same type or an equivalent. Mazda CX-5 2020 key fobs typically use either a CR2025 or CR2032 battery, depending on the key fob type (Type A or Type B). Refer to your owner’s manual or the markings inside your key fob to confirm the correct type.
Tools You’ll Need for the Replacement
Fortunately, you won’t need any specialized tools to replace your mazda cx 5 2020 key fob battery. Here’s what you’ll likely need:
- New Battery: Purchase the correct replacement battery (CR2025 or CR2032) from a reputable retailer. You can find these at most drugstores, supermarkets, or online retailers.
- Small Flathead Screwdriver: A small, flathead screwdriver is needed to open the key fob casing. It’s recommended to wrap the tip of the screwdriver with tape to prevent scratching the key fob.
Step-by-Step Battery Replacement Guide: Type A Key Fob
If your Mazda CX-5 2020 key fob is Type A, follow these steps to replace the battery:
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Remove the Auxiliary Key: Locate the knob on your key fob and press it to release the auxiliary key. Pull the key out completely.
Alt text: Removing the auxiliary key from a type A Mazda CX-5 2020 key fob.
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Pry Open the Casing (Step 1): Insert a tape-wrapped flathead screwdriver into the small slot on the side of the key fob. Twist the screwdriver gently in the direction indicated by the arrow (usually outwards) to slightly open the cover.
Alt text: Prying open the type A Mazda CX-5 2020 key fob casing with a screwdriver.
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Pry Open the Casing (Step 2): Insert the tape-wrapped flathead screwdriver into the gap you just created and slide it along the seam in the direction of the arrow to further separate the cover.
Alt text: Sliding a screwdriver along the seam to open a type A Mazda CX-5 2020 key fob.
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Remove the Cover: Twist the flathead screwdriver again in the direction of the arrow to fully detach and remove the key fob cover.
Alt text: Removing the cover of a type A Mazda CX-5 2020 key fob to access the battery.
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Remove the Battery Cap and Old Battery: Carefully remove the battery cap. Then, gently remove the old battery.
Alt text: Removing the battery cap and the old battery from a type A Mazda CX-5 2020 key fob.
- Important Rubber Ring: Be extremely careful not to scratch or damage the small rubber ring. If it detaches, make sure to reattach it in its correct position before installing the new battery. This ring helps protect against moisture and dust.
Alt text: Close-up view of the rubber ring inside a type A Mazda CX-5 2020 key fob battery compartment.
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Insert New Battery: Place the new battery into the compartment with the positive (+) pole facing upwards. Replace the battery cap.
Alt text: Inserting a new CR2025 battery into a type A Mazda CX-5 2020 key fob, positive side up.
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Close the Cover: Carefully snap the key fob cover back into place, ensuring it is securely closed.
Alt text: Closing the cover of a type A Mazda CX-5 2020 key fob after battery replacement.
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Reinsert Auxiliary Key: Slide the auxiliary key back into the key fob until it clicks into place.
Step-by-Step Battery Replacement Guide: Type B Key Fob
If your Mazda CX-5 2020 key fob is Type B, follow these instructions:
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Remove Lower Cover: Press the knob on the key fob while simultaneously removing the lower cover in the direction of the arrow.
Alt text: Removing the lower cover of a type B Mazda CX-5 2020 key fob.
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Unlock Upper Cover: Locate the tab on the side of the key fob. Press in the tab to unlock the upper cover.
Alt text: Unlocking the upper cover of a type B Mazda CX-5 2020 key fob by pressing the tab.
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Pry Open the Upper Cover (Step 1): Insert a tape-wrapped flathead screwdriver into the gap and slide it along the seam in the direction of the arrow to start opening the upper cover.
Alt text: Prying open the upper cover of a type B Mazda CX-5 2020 key fob with a screwdriver.
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Remove Upper Cover: Twist the flathead screwdriver in the direction of the arrow to fully remove the upper cover.
Alt text: Removing the upper cover to access the battery in a type B Mazda CX-5 2020 key fob.
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Remove the Cap: Use a tape-wrapped flathead screwdriver to gently remove the battery cap.
Alt text: Removing the battery cap from a type B Mazda CX-5 2020 key fob using a screwdriver.
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Remove the Battery: Use a tape-wrapped flathead screwdriver to carefully remove the old battery.
Alt text: Removing the old CR2032 battery from a type B Mazda CX-5 2020 key fob.
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Insert New Battery: Place the new battery into the transmitter with the positive (+) pole facing upwards.
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Install the Cap: Replace the battery cap.
Alt text: Installing the battery cap after replacing the battery in a type B Mazda CX-5 2020 key fob.
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Install Upper Cover: Snap the upper cover back into place.
Alt text: Installing the upper cover back onto a type B Mazda CX-5 2020 key fob.
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Install Lower Cover: Insert the tabs of the lower cover into the slots on the transmitter and push to install the lower cover until it is securely in place.
Alt text: Installing the lower cover back onto a type B Mazda CX-5 2020 key fob to complete battery replacement.
Tips for Battery Longevity and Maintenance
To extend the life of your mazda cx 5 2020 key fob battery and ensure reliable performance, consider these helpful tips:
- Avoid Extreme Temperatures: Extreme heat or cold can negatively impact battery life. Avoid leaving your key fob in direct sunlight or freezing temperatures for extended periods.
- Keep it Dry: Moisture can damage the key fob and potentially drain the battery. Protect your key fob from getting wet.
- Spare Battery: Consider keeping a spare battery of the correct type at home or in your car, just in case your key fob battery dies unexpectedly.
- Regular Checks: Periodically check for the warning signs of a low battery mentioned earlier. Proactive replacement is always better than being caught off guard.
Conclusion
Replacing your mazda cx 5 2020 key fob battery is a simple maintenance task you can easily handle yourself. By following this guide and taking the necessary precautions, you can ensure your key fob remains functional and reliable. If you are uncomfortable performing this replacement yourself, or if you encounter any issues, it’s always recommended to visit an Authorized Mazda Dealer for professional assistance. A fresh battery will restore your key fob’s range and responsiveness, ensuring you can continue to enjoy the convenience of your Mazda CX-5’s keyless entry system.
