Nissan Altima 2012 Key Fob Battery: A Guide To Replacement

NISSAN ALTIMA KEY FOB BATTERY REPLACEMENT 2007 2008 2009 2010 2011 2012 from


If you own a Nissan Altima 2012, you may have encountered issues with your key fob battery. The key fob is an essential component of your vehicle, allowing you to lock and unlock the doors, open the trunk, and even start the engine remotely. However, over time, the battery in your key fob may drain, causing it to lose its functionality. In this article, we will provide you with a step-by-step guide on how to replace the key fob battery in your Nissan Altima 2012.

Step 1: Gather the Necessary Tools

Before you start the battery replacement process, it’s important to gather all the necessary tools. You will need a small flathead screwdriver and a replacement CR2032 battery, which is easily available at most electronic stores.

Step 2: Open the Key Fob

Using the small flathead screwdriver, carefully pry open the key fob. Start by inserting the screwdriver into the small opening on the side of the key fob and gently twist it to separate the two halves. Be cautious not to damage the plastic housing or the electronic components inside.

Step 3: Remove the Old Battery

Once you have successfully opened the key fob, you will see the old battery located inside. Carefully remove the old battery by gently pushing it out of its slot. Take note of the battery’s orientation, as you will need to insert the new battery in the same way.

Step 4: Insert the New Battery

Take the new CR2032 battery and insert it into the slot, making sure to align it properly according to the markings on the key fob. Gently press the battery down until it clicks into place. Ensure that the battery is securely seated to avoid any connectivity issues.

Step 5: Reassemble the Key Fob

After replacing the battery, it’s time to reassemble the key fob. Align the two halves of the key fob and firmly press them together until they snap back into place. Take a moment to ensure that the key fob is securely closed and that there are no gaps or loose parts.

Step 6: Test the Key Fob

Now that you have replaced the battery and reassembled the key fob, it’s time to test its functionality. Stand near your vehicle and press the buttons on the key fob to check if it locks and unlocks the doors, opens the trunk, and starts the engine remotely. If everything works as expected, then you have successfully replaced the key fob battery.

Tips for Battery Maintenance

1. Replace the battery every 2-3 years:

It’s recommended to replace the key fob battery in your Nissan Altima 2012 every 2-3 years, even if it hasn’t completely drained. This will help prevent any unexpected issues and ensure optimal performance.

2. Keep spare batteries:

It’s always a good idea to keep spare CR2032 batteries handy. This way, if your key fob battery dies unexpectedly, you can quickly replace it and avoid any inconvenience.

3. Avoid exposure to extreme temperatures:

Extreme temperatures, such as excessive heat or cold, can affect the performance and lifespan of the key fob battery. Avoid leaving your key fob in direct sunlight or in extremely cold conditions for prolonged periods.


Replacing the key fob battery in your Nissan Altima 2012 is a simple process that can be done at home with minimal tools. By following the step-by-step guide provided in this article, you can ensure that your key fob remains functional and reliable. Remember to perform regular battery maintenance and keep spare batteries on hand to avoid any unexpected issues. With a properly functioning key fob, you can enjoy the convenience and security it provides while operating your Nissan Altima 2012.