Is your 2009 Nissan Maxima key fob not working as reliably as it used to? The most common culprit is a low battery. Fortunately, replacing the battery in your Maxima key fob is a straightforward process you can easily do yourself. This guide will walk you through each step to get your key fob working like new again.
Identifying the Correct Battery for Your Maxima Key Fob
Before you begin, it’s important to have the right replacement battery. Your 2009 Maxima key fob uses a CR2032 type 3-volt battery. You might also see this battery listed under other designations like DL2032 or ECR2032, but they are all the same and interchangeable. These batteries are widely available and can be purchased at stores like Walmart, Radio Shack, and any electronics retailer.
Step-by-Step Guide to Replacing Your Key Fob Battery
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Remove the Key: Locate the small latch on your key fob. Slide this latch to release and remove the mechanical key from the fob.
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Open the Fob: Once the key is removed, you’ll see small slots where the key was. Insert a small screwdriver into one of these slots. Gently twist the screwdriver. This should split the key fob casing open.
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Battery Orientation: With the fob open, you’ll see the battery. Note the orientation before removing it. The new battery should be installed “face down”. This means the side of the battery with the writing on it will be facing down, hidden from view once installed, and the blank side will be visible.
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Insert New Battery: Remove the old battery and insert the new CR2032 battery in the same orientation.
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Close the Fob: Carefully snap the two halves of the key fob casing back together until they are securely closed.
Troubleshooting Low Key Fob Battery Issues
If you replace the battery in your 2009 Maxima key fob and still experience issues, or if both of your fobs suddenly indicate low battery even with new batteries, there might be a different problem. In some cases, issues with the intelligent key system’s antennas in your Maxima can cause these symptoms. Diagnosing and repairing this type of problem requires a knowledgeable service technician.
Gentle Opening Techniques to Avoid Damage
While some may pry the fob open using the side slots, using the key slot and a gentle twist with a screwdriver, as described above, helps prevent damage and keeps the sides of your key fob from becoming distorted or looking worn over time. This method helps maintain the appearance and integrity of your 2009 Maxima key fob.
