How to Test & Replace Your Nissan Fob Battery: A Step-by-Step Guide

Ever found yourself locked out of your Nissan because of a dead fob battery? Frustrating, right? Don’t worry, you’re not alone in this predicament. But what if you could easily solve this issue yourself, without rushing to a dealership or a mechanic? Imagine the convenience of being able to change your Nissan fob battery in just a few simple steps. That’s where this article comes in to save the day!

Step 1: Gather Necessary Tools

When it’s time to change your Nissan fob battery, the first step is to gather the required tools. Here’s what you’ll need:

  • New replacement battery
  • Small flat-head screwdriver
  • Tweezers or needle-nose pliers

Without these essential tools, changing your Nissan fob battery might prove challenging or even impossible. So, ensure you have them on hand before starting the process.

Step 2: Open the Nissan Fob

  • Look for the notch on the side.
  • Insert a small flat-head screwdriver or coin into the notch.
  • Gently twist to separate the two halves.
  • Be careful not to damage the fob’s components.

Tips for Opening the Nissan Fob

  • Avoid using excessive force.
  • Work slowly and methodically.
  • Check for any hidden screws before prying.

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Important fact/datum Description
Notch location Side of the Nissan fob
Tools needed Small flat-head screwdriver or coin

Step 3: Replace the Old Battery

Now that you’ve successfully opened your Nissan fob, it’s time to replace the old battery. Follow these steps to complete the process smoothly:

  • Identify the battery: Look for the small, circular battery inside the fob. Note down the battery type (e.g., CR2032) to ensure you purchase the correct replacement.
  • Replace the battery: Carefully remove the old battery from its compartment using a non-metallic tool. Insert the new battery with the correct orientation, matching the + and – symbols as indicated.
  • Close the fob: Once the new battery is securely in place, align the two halves of the fob and gently press them together. Ensure that the fob clicks shut properly without any gaps.
  • Test the fob: Press the buttons on the fob to verify that the new battery is working correctly. If the fob fails to respond, double-check the battery orientation and reassemble the fob if necessary.
  • Dispose of the old battery: Remember to safely dispose of the old battery according to local regulations. Consider recycling options to minimize environmental impact.

By following these steps, you can easily replace the old battery in your Nissan fob and restore its functionality without hassle.

Step 4: Close the Fob

After replacing the battery, the next important step is closing the fob securely to ensure proper functioning.

  • Fit the cover back onto the fob, ensuring it aligns correctly.
  • Press firmly along the edges to snap the cover back into place.
  • Confirm that the cover is securely closed by trying to gently slide it open.

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When the cover is firmly in place, you’re ready to move on to the next step without any concerns.

Step 5: Test the Fob

After replacing the battery and ensuring the fob is securely closed, it’s time to test if everything is working smoothly. Here’s what you need to do to test the fob:

  • Press any button: Try pressing any button on the fob to check if it sends a signal.
  • Check the indicator light: Look for the indicator light on the fob — it should flash when you press a button.
  • Test the range: Walk a few feet away from your car and test if the fob works within a reasonable distance.
Key Points Details
Press any button on the fob to test It should send a signal
Check for the indicator light It should flash when a button is pressed
Test the fob’s range Ensure it works within a reasonable distance

Testing the fob ensures that the battery replacement was successful and that your Nissan fob is ready for use. If everything checks out during the test, you can confidently continue using your fob for your car.


With these simple steps, you can easily change the battery in your Nissan fob and ensure it’s working properly. Testing the fob after replacing the battery is crucial to confirm its functionality. By following these guidelines, you can quickly get your fob back in working order and continue using it without any issues. Remember to test the fob’s signal, indicator light, and range to ensure a successful battery replacement. With a properly functioning fob, you can conveniently access your Nissan without any hassle. Enjoy the peace of mind knowing that your fob is ready for use whenever you need it.

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Frequently Asked Questions

How can I test my Nissan fob after replacing the battery?

After replacing the battery, press any button on the fob to check for a signal. Watch for the indicator light to flash when a button is pressed. Finally, test the fob’s range by walking a few feet away from the car to ensure it functions correctly. This confirms the success of the battery replacement and verifies the fob is ready for use.

What should I do if my Nissan fob does not respond after replacing the battery?

If the fob does not respond after battery replacement, double-check if the battery is correctly installed and the fob is securely closed. Ensure the battery terminals are in the correct position and try the testing steps again. If the problem persists, consider replacing the battery with a new one to see if that resolves the issue. If the fob still does not work, contact a professional for further assistance.

Battery industry professional with 5+ years of experience. Bachelor of Science in Electrical Engineering from Georgia Tech. Specializes in power systems and renewable energy.

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