Is your Mazda CX-5 key fob not working? Before you assume the worst, the most common culprit is often just a dead battery. Replacing the battery in your Mazda CX-5 key fob is a straightforward task that can save you time and money. This guide will walk you through the simple steps to get your key fob functioning again.
Mazda CX-5 key fobs typically use CR2032 and CR2025 batteries, which are widely available online and at most stores for under $6. To find the exact battery for your model year, you can use online battery finders by entering your Mazda CX-5’s year, make, and model.
Here’s how to replace the battery in your Mazda CX-5 key fob:
Opening Your Mazda CX-5 Key Fob
The method to open your key fob depends on whether you have a newer or older Mazda CX-5.
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Newer Mazda CX-5 Models: Look for a small, designated slot on your key fob. Insert the hidden key (usually found by sliding a release button) into this slot. This will allow you to pry the case open.
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Older Mazda CX-5 Models: If you don’t see a slot, locate a small notch on the side of your key fob casing. Use a thin, flat object, such as a flathead screwdriver or a small pry tool, to gently pry open the case at this notch. Be careful not to scratch the plastic casing.
Replacing the Battery
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Access the Battery: Once the case is open, carefully lift the circuit board to reveal the battery compartment.
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Note Battery Orientation: Before removing the old battery, take a moment to observe how it is positioned in the case. Note the positive (+) and negative (-) sides. This will ensure you install the new battery correctly.
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Remove the Old Battery: Gently remove the old battery. You might be able to pry it out with your fingernail or the same thin tool you used to open the case.
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Insert the New Battery: Place the new CR2032 or CR2025 battery into the compartment, ensuring it is oriented in the same way as the old one. Push down until it is securely in place.
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Close the Case: Carefully snap the key fob case back together until it is fully closed.
Testing Your Key Fob
After replacing the battery, test your Mazda CX-5 key fob by pressing the buttons to lock, unlock, or start your vehicle (if equipped with remote start). If the key fob still doesn’t work, double-check that the battery is correctly installed and that the battery contacts are clean and making good contact with the battery.
Understanding Key Fob Types
Mazda CX-5 key fobs can come in various styles. Here are some common types:
- Standard Remotes: Basic remotes with standard lock, unlock, and sometimes panic functions.
- Flip Keys: Remotes with a physical key blade that flips out from the remote body.
- Remote Heads: Remotes with an integrated, non-retractable key blade.
- Fobik Keys: Key fobs where the key blade is separate and inserts into the ignition or a slot on the fob itself.
- Smart Keys: Advanced remotes often associated with push-button start systems, offering features like proximity unlocking and remote start.
When Battery Replacement Isn’t Enough
If replacing the battery doesn’t solve the problem with your Mazda CX-5 key fob, you may need a full key fob replacement. This could be necessary due to internal damage or electronic malfunction. For further assistance and visual guides, you can search for your specific Mazda CX-5 key fob battery replacement video on our YouTube page. If you can’t find your exact model, videos for similar key fob types can also be helpful.
