How to Replace the Battery on Your Infiniti Key: Test Your Key Fob Functions

Ever found yourself locked out of your Infiniti because of a dead key fob battery? Frustrating, right? Don’t worry, you’re not alone. What if you could easily replace the battery yourself and avoid this hassle altogether? Well, good news – you can! In this article, you’ll discover a simple step-by-step guide on how to change the battery on your Infiniti key fob.

Picture this: you’re rushing to get somewhere important, and your key fob suddenly stops working. Sounds like a nightmare waiting to happen, doesn’t it? But fear not, with the right knowledge, you can be prepared for such situations. By learning how to change the battery on your Infiniti key, you’ll always be one step ahead and never have to deal with the inconvenience of a dead key fob again.

By the end of this article, you’ll be equipped with the skills to effortlessly replace the battery in your Infiniti key fob. Say goodbye to unexpected lockouts and hello to peace of mind knowing you can tackle this simple task with confidence. Let’s dive in and make sure you’re always in control of your Infiniti’s access.

Gather the necessary tools

To successfully change the battery on your Infiniti key, you’ll need a few essential tools and items. Ensuring you have everything ready before starting will make the process smoother and more efficient. Here’s what you’ll need:

  • New battery for your Infiniti key fob
  • Small flat-head screwdriver or a coin
  • Tweezers or small pliers
  • Clean cloth or tissue

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Remember, having these tools at hand will help you complete the battery replacement without any delays. Once you’ve gathered everything, you’ll be all set to move on to the next steps.

Identify the key fob type

To begin the battery replacement process for your Infiniti key fob, the first step is identifying the type of key fob you have. This is crucial because different models may have variations in the way the key fob is opened to access the battery compartment.

  • Smart Key Fob: This type typically has a switchblade key that can be released by pressing a button on the side or back of the fob.
  • Traditional Key Fob: These fobs usually have a key ring attached for manual unlocking.

Ensure you accurately determine which type of key fob you have before proceeding with the battery replacement steps.

Open the key fob

When it’s time to open the key fob, you’ll need to handle it carefully to avoid damaging the delicate components inside.

Here are the steps to open the key fob:

  • Identify the opening: Look for a small slot or button on the key fob that allows you to access the internal battery compartment.
  • Use the right tool: Depending on the type of key fob you have, you may need a small flat-head screwdriver, a coin, or another tool to help open the fob without causing any harm.
  • Apply gentle pressure: Insert the tool into the designated opening and gently twist or pry it open. Take your time and be patient to avoid any accidental breakage.
  • Inspect for damage: Once you’ve opened the key fob, check for any signs of damage or wear on the internal components and the battery itself.
  • Handle with care: When handling the key fob components, be mindful of static electricity and other factors that could affect their performance.

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Remember, opening the key fob is just the beginning of the battery replacement process. The next steps will guide you through replacing the battery to ensure your Infiniti key fob continues to function smoothly.

Replace the old battery

To replace the old battery in your Infiniti key fob, you’ll need to follow these steps:

  • Step 1: Identify the battery type: Check the existing battery to determine the correct replacement type.
  • Step 2: Purchase a new battery: Acquire a compatible battery for your Infiniti key fob. Common batteries used include CR2032 or CR2025.
  • Step 3: Open the key fob: Use the method outlined earlier to safely open the key fob without damaging it.
  • Step 4: Remove the old battery: Carefully take out the old battery from its compartment, ensuring not to damage the key fob components.
  • Step 5: Insert the new battery: Place the fresh battery into the designated slot with the correct polarity.
  • Step 6: Close the key fob: Gently put the key fob back together, making sure it’s properly sealed to prevent any issues.

Adhering to these steps ensures a successful replacement of the old battery in your Infiniti key fob.

Test the key fob

Now that you’ve successfully replaced the battery in your Infiniti key fob, it’s time to test if everything is in working order. Testing the key fob ensures that the new battery is properly installed and that the key fob can communicate with your car as intended. Here’s how you can do it:

  • Stand Near Your Vehicle: Approach your car and stand within a reasonable distance for the key fob to be in range.
  • Test Lock/Unlock Functions: Press the buttons on the key fob to lock and unlock your car. Ensure that the signals are sent and received without any issues.
  • Check Remote Start: If your key fob has a remote start feature, test it to see if the car starts up correctly.
  • Ensure Lights Flash: When you lock or unlock the car using the key fob, check if the lights flash as usual.
  • Check Alarm: Test the panic button on the key fob to check if the car alarm is triggered.

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If everything functions as expected, congratulations on successfully changing the battery in your Infiniti key fob! Should you encounter any issues during the testing phase, double-check the battery installation and repeat the process if necessary.


That’s it! By testing the functions of your Infiniti key fob post-battery replacement, you can ensure a successful swap. Stand near your vehicle, try the lock/unlock features, test the remote start, and check for flashing lights. If everything works smoothly, you’re good to go. If you encounter any issues, double-check the battery installation and repeat the process if necessary. Happy key fob maintenance!

Frequently Asked Questions

How do I test the functionality of my Infiniti key fob after replacing the battery?

After replacing the battery, stand near your vehicle and test the lock/unlock functions, remote start feature, lights flashing when locking/unlocking, and the alarm. If all functions work as expected, the battery replacement was successful.

What should I do if my Infiniti key fob is not working after replacing the battery?

If your key fob is not functioning after battery replacement, recheck the battery installation. If the issue persists, consider repeating the process or consulting 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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