Is your Mazda MX-5 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 handle yourself. This guide from keyfobprog.com will walk you through replacing your Mx5 Key Fob Battery quickly and safely, ensuring you’re back on the road in no time.
Recognizing the signs of a low key fob battery is the first step. If you’re experiencing any of the following with your Mazda MX-5 key fob, it’s likely time for a battery replacement:
- Buttons are unresponsive: You press the lock, unlock, or trunk button, but nothing happens.
- Operation indicator light is off: Typically, a light on your key fob flashes when you press a button. If this light is no longer illuminating, the battery could be the culprit.
- Reduced operating range: You need to be much closer to your MX-5 than usual for the key fob to work.
- Key indicator light on dashboard: In some MX-5 models, a key indicator light on the instrument cluster will flash, signaling a low key fob battery.
Before your key fob becomes completely unusable, replacing the battery is a proactive step. Let’s dive into how to do it.
There are typically two types of key fobs for the Mazda MX-5, Type A and Type B. While they look slightly different, replacing the battery is straightforward for both. Let’s start with Type A.
Replacing the Battery in a Type A MX-5 Key Fob
If you have a Type A key fob, follow these simple steps to replace your mx5 key fob battery:
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Remove the auxiliary key: Locate the small knob or release on your key fob and use it to detach and pull out the auxiliary key. This is a small mechanical key that slides into the fob.
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Pry open the cover (Step 1): Take a flathead screwdriver and wrap the tip with tape to prevent scratches. Insert the tip into the small slot on the side of the key fob. Twist the screwdriver gently in the direction indicated by the arrow to slightly open the cover.
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Pry open the cover (Step 2): Insert the tape-wrapped flathead screwdriver into the gap you’ve created and slide it along the seam in the direction of the arrow to further separate the cover.
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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.
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Remove the battery: You’ll see a small battery cap. Remove this cap to access the battery. Carefully remove the old battery. The Type A key fob typically uses a CR2025 battery.
- Important: Note the rubber ring around the battery compartment. Be careful not to damage or scratch this ring. If it comes loose, make sure to reattach it before inserting the new battery.
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Insert the new battery: Install a new CR2025 battery (or equivalent) with the positive (+) side facing upwards. Replace the battery cap.
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Close the cover: Carefully snap the key fob cover back into place, ensuring it is securely closed.
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Reinsert the auxiliary key: Slide the auxiliary key back into the key fob until it clicks into place.
Replacing the Battery in a Type B MX-5 Key Fob
For Type B MX-5 key fobs, the process is slightly different but still easy to follow for your mx5 key fob battery replacement:
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Remove the lower cover: Press the knob on the key fob and simultaneously remove the lower cover in the direction of the arrow.
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Unlock the upper cover: Locate the tab on the side of the key fob. Press this tab inwards to unlock the upper cover.
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Pry open the upper cover (Step 1): Insert a tape-wrapped flathead screwdriver into the gap and slide it in the direction of the arrow, starting to separate the upper cover.
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Remove the upper cover: 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 cap: Use your tape-wrapped flathead screwdriver to gently remove the battery cap, exposing the battery.
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Remove the battery: Use the tape-wrapped flathead screwdriver to carefully pry out and remove the old battery. Type B key fobs typically use a CR2032 battery.
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Insert the new battery: Place a new CR2032 battery (or equivalent) into the transmitter, ensuring the positive (+) pole is facing upwards.
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Install the cap: Replace the battery cap, ensuring it’s securely in place.
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Install the upper cover: Snap the upper cover back onto the key fob, aligning the edges carefully.
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Install the lower cover: Insert the tabs of the lower cover into the slots on the transmitter and push to install the lower cover until it clicks securely.
Important Tips and Cautions
While replacing your mx5 key fob battery is a simple process, keep these important tips in mind:
- Battery Type: Always replace with the correct battery type: CR2025 for Type A and CR2032 for Type B, or an equivalent.
- Correct Installation: Ensure the battery is installed with the correct polarity (+ side up). Incorrect installation can cause battery leakage.
- Handle with Care: When replacing the battery, avoid touching internal circuitry or electrical terminals. Be gentle to prevent bending terminals or getting dirt inside the transmitter, as this could damage your key fob.
- Battery Disposal: Dispose of used batteries responsibly. Insulate the terminals with tape, never disassemble or throw batteries into fire or water. Check your local regulations for battery disposal.
By following these steps, you can easily replace your mx5 key fob battery and keep your Mazda MX-5 key fob working perfectly. For more car key solutions and guides, visit keyfobprog.com.
