Is your 2020 Mazda 6 key fob acting up? Don’t get stranded! A dead key fob battery is a common issue, but thankfully, it’s an easy fix you can do yourself. This guide will walk you through replacing your Mazda 6 key fob battery, saving you time and money.
You might be wondering if your key fob battery is dying. Here are the telltale signs for your 2020 Mazda 6:
- Operation Indicator Light Trouble: When you press the buttons, the little light on your key fob doesn’t flash, or is very weak.
- Dashboard Warning Light: Your Mazda 6 instrument cluster might display a flashing KEY indicator or a specific message indicating a low key fob battery.
- Reduced Range: You need to be much closer to your car for the remote to lock, unlock, or start the engine.
- Inoperable Buttons: Sometimes, the buttons become unresponsive altogether.
If you’re experiencing any of these issues, it’s likely time for a new battery. Replacing it promptly will prevent your key fob from becoming completely unusable.
Before you start, it’s important to note a few general warnings to ensure a smooth and safe battery replacement:
- Correct Installation: Always double-check that you install the new battery with the correct polarity (+ side up). Incorrect installation can lead to battery leakage and damage your key fob.
- Handle with Care: Be gentle when handling the internal components of your key fob. Avoid touching the circuitry, bending any terminals, or letting dirt get inside.
- Explosion Risk: Incorrect battery replacement can pose an explosion risk. Always use the specified battery type and follow instructions carefully.
- Battery Disposal: Dispose of old batteries responsibly. Insulate the terminals with tape, and never disassemble, throw into fire or water, deform, or crush them. Check your local regulations for proper disposal methods.
- Use the Right Battery: Your 2020 Mazda 6 key fob will use either a CR2025 or CR2032 battery, depending on the type of key fob you have. We’ll cover how to identify your type below. Always replace with the same type or an equivalent.
While Mazda recommends professional battery replacement at a dealership, you can easily do it yourself by following these step-by-step instructions. Let’s get started! First, you’ll need to determine which type of key fob you have. The process is slightly different for each.
Identifying Your 2020 Mazda 6 Key Fob Type (Type A)
Type A key fobs are typically characterized by a slide-out auxiliary key and a more rectangular shape.
Step-by-Step Guide: Replacing the Battery in a Type A Key Fob
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Remove the Auxiliary Key: Locate the small knob or button on your key fob. Press it and pull out the auxiliary key.
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Pry Open the Cover (Initial Twist): Take a flathead screwdriver and wrap the tip with tape to prevent scratches. Insert the screwdriver into the small slot on the side of the key fob. Twist the screwdriver gently in the direction indicated by the arrow in the image to slightly open the cover.
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Slide and Separate the Cover: Insert the tape-wrapped screwdriver further into the gap you just created. Slide the screwdriver along the seam in the direction of the arrow to separate the cover halves.
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Remove the Cover Completely: Twist the flathead screwdriver again in the direction of the arrow to fully detach and remove the cover.
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Access and Remove the Old Battery: You may see a battery cap. Remove this cap. Then, carefully remove the old battery. Note the orientation of the battery – the positive (+) side should be facing up.
Important: Be extremely careful not to damage or scratch the small rubber ring (O-ring) that may be around the battery compartment. If it comes loose, make sure to reattach it before inserting the new battery. This ring helps protect the key fob from moisture.
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Insert the New Battery: Place the new CR2025 battery (or equivalent) into the compartment with the positive (+) pole facing up. Replace the battery cap if there was one.
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Close the Key Fob Cover: Carefully snap the key fob cover back into place, ensuring it’s securely closed.
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Reinsert the Auxiliary Key: Slide the auxiliary key back into the key fob until it clicks into place.
Identifying Your 2020 Mazda 6 Key Fob Type (Type B)
Type B key fobs often have a more rounded or oval shape and may have a different method for accessing the battery compartment.
Step-by-Step Guide: Replacing the Battery in a Type B Key Fob
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Remove the Lower Cover: Locate the knob or button on the key fob and press it. While pressing the knob, remove the lower cover in the direction of the arrow as shown.
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Unlock the Upper Cover: Look for a small tab on the side of the key fob where the lower cover was removed. Press this tab inwards to unlock the upper cover.
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Pry Open the Upper Cover: Insert a tape-wrapped flathead screwdriver into the gap created after unlocking the upper cover. Slide the screwdriver in the direction of the arrow to begin separating the cover.
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Remove the Upper Cover Completely: Twist the flathead screwdriver in the direction of the arrow to fully remove the upper cover of the key fob.
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Remove the Battery Cap (if applicable): Some Type B key fobs may have a small battery cap. Use the tape-wrapped flathead screwdriver to gently remove it if present.
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Remove the Old Battery: Use the tape-wrapped screwdriver to carefully pry out the old battery. Again, note the orientation – the positive (+) side should be facing up.
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Insert the New Battery: Place the new CR2032 battery (or equivalent) into the transmitter with the positive (+) pole facing up.
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Install the Battery Cap (if applicable): If you removed a battery cap, reinstall it now.
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Install the Upper Cover: Carefully align and snap the upper cover back onto the key fob. Ensure it’s firmly in place.
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Install the Lower Cover: Insert the tabs of the lower cover into the slots on the transmitter and push it into place until it clicks securely.
Final Checks and Tips
After replacing the battery, test your 2020 Mazda 6 key fob to ensure it’s working correctly. Lock and unlock your doors, and try starting your engine remotely if your model is equipped with that feature.
- Battery Type Confirmation: Double-check your owner’s manual or the markings inside your key fob to confirm whether you need a CR2025 or CR2032 battery. Using the wrong type can affect performance or damage your key fob.
- Cold Weather and Battery Life: Extreme temperatures, especially cold weather, can impact battery performance. You might find your key fob battery drains faster in winter.
- Professional Help: If you’re uncomfortable performing this DIY replacement, or if you encounter any issues, don’t hesitate to visit your local Mazda dealer for assistance.
Replacing your 2020 Mazda 6 Key Fob Battery is a straightforward task that can save you from inconvenience. By following these steps, you can get your key fob working again quickly and easily!
