Is your 2012 Nissan Maxima key fob not working as reliably as it used to? A common culprit is a low battery. Fortunately, replacing the battery in your Nissan Maxima key fob is a straightforward task you can easily do yourself. This guide will walk you through the process step-by-step, ensuring you can get your key fob back in top shape quickly and without any hassle.
What Battery Does a 2012 Nissan Maxima Key Fob Need?
Your 2012 Nissan Maxima key fob uses a CR2032 3-volt lithium battery. This type of battery is widely available and can be found at most retailers that sell batteries, including:
- Walmart
- Radio Shack (or other electronics stores)
- Pharmacies
- Grocery stores
- Online retailers like Amazon
You might see the CR2032 battery listed under slightly different designations depending on the manufacturer, such as DL2032 or ECR2032. Rest assured, these are all the same physical battery type and will work perfectly in your Nissan Maxima key fob.
Step-by-Step Guide to Replacing Your Key Fob Battery
Replacing the battery in your 2012 Nissan Maxima key fob is a simple process that requires minimal tools. Here’s how to do it:
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Locate the Release Latch and Remove the Emergency Key: On your Nissan Maxima key fob, you’ll find a small latch. Slide this latch to release the mechanical emergency key. Pull the key out of the fob and set it aside.
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Open the Key Fob Casing: With the emergency key removed, you’ll see two small slots where the key was located. Insert a small flathead screwdriver into one of these slots. Gently twist the screwdriver. This should begin to separate the two halves of the key fob casing. You can also use your fingernail or a plastic pry tool if you prefer to avoid using a screwdriver.
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Carefully Separate the Fob Halves: Once you’ve twisted slightly, the key fob should pop open. Carefully separate the two halves of the fob casing completely.
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Remove the Old Battery: Inside the key fob, you’ll see the CR2032 battery. Note the orientation of the battery – typically the positive (+) side faces up. Gently pry out the old battery. You can use your fingernail or the small screwdriver to help with this.
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Install the New Battery: Place the new CR2032 battery into the battery compartment, ensuring the correct orientation (positive side usually facing up, so the writing on the battery face will be hidden once installed). Press down firmly to ensure it is securely in place.
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Reassemble the Key Fob: Carefully snap the two halves of the key fob casing back together. Press firmly until you hear a click, ensuring the casing is fully closed and secure.
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Reinsert the Emergency Key: Slide the emergency key back into its slot in the key fob until it clicks into place.
Troubleshooting Battery Issues
After replacing the battery, your key fob should work perfectly. However, if you experience issues with both of your key fobs showing a low battery warning around the same time, and the batteries are relatively new, there might be a different issue.
In such cases, it’s possible that one of the antennas in your 2012 Nissan Maxima’s Intelligent Key system is malfunctioning. This is a more complex problem that requires diagnosis and repair by a qualified and knowledgeable service technician. If you suspect an antenna issue, it’s best to consult with a professional at your local Nissan dealership or a trusted automotive repair shop.
Replacing your 2012 Nissan Maxima key fob battery is a simple and cost-effective way to maintain your vehicle’s functionality. By following these steps, you can ensure your key fob is always ready to unlock your car and get you on your way.
