The Infiniti Intelligent Key is a small marvel of convenience, allowing you to unlock your doors and start your engine without ever taking it out of your pocket. But when you notice the range decreasing or the “Key Battery Low” warning appears on your dash, it signals the end of the battery’s life. This common issue can be a source of frustration, but there is no need to schedule a costly trip to the dealership. With a few simple tools and a couple of minutes, you can easily solve the problem yourself. This guide will provide clear, beginner-friendly instructions on how to change battery in infiniti key fob, restoring its full function and your peace of mind.
Changing the battery in your Infiniti key fob is a straightforward process that doesn’t require any advanced technical skills. By handling this small maintenance task on your own, you can save time and money while ensuring your key fob continues to work seamlessly. All it takes is a little preparation, a replacement battery, and a step-by-step approach to get the job done quickly and efficiently. Here’s how to change the battery in your Infiniti key fob:
Gather Tools and Materials
Before you begin, make sure you have the following tools and materials ready to ensure a smooth battery replacement process:
- Replacement Battery: Most Infiniti key fobs use a CR2025 or CR2032 lithium coin battery. Check your owner’s manual or the existing battery’s specifications to confirm the correct type.
- Small Flathead Screwdriver: This will help you carefully open the key fob casing without causing any damage.
- Clean Cloth or Towel: Use this as a soft surface to prevent scratching or damaging the key fob while you work.
Having all the necessary items prepared ahead of time will make the battery replacement process quick and efficient.
Step-by-Step Guide on How to Change Battery in Infiniti Key Fob
Step 1: Gather Your Simple Supplies
Before you begin, it’s helpful to gather the few items you will need to make the process quick and smooth. The most important item is the correct replacement battery. Most Infiniti key fobs use a CR2032 3V coin cell battery, but it is always best to confirm this by checking your owner’s manual or by opening the fob first. You will also need a small, flathead screwdriver to help you gently pry open the key fob case. Having a soft cloth or microfiber towel to work on can also be useful to prevent the plastic casing of your expensive key fob from getting scratched.
Step 2: Release the Mechanical Key
The first action you need to take is to remove the hidden mechanical key from inside the fob. This key is your manual backup for unlocking the door if the battery is completely dead. On the back of your Infiniti key fob, you will find a small release latch. Simply slide this tiny switch, and the emergency key will pop out or become loose enough for you to pull it out completely. Removing this key is not only useful for manual entry, but it also reveals the seam and access points you will use to open the main body of the key fob.
Step 3: Open the Case
With the mechanical key removed, you can now open the fob’s plastic housing. Look into the slot where the key was stored. You will see small indentations or slots specifically designed for this purpose. Carefully insert your small flathead screwdriver into one of these slots and give it a gentle twist. You should hear a slight pop as the clips holding the two halves of the fob together begin to release. Work your way around the seam, gently prying until the case separates into two distinct pieces. Be patient and use minimal force to avoid cracking the plastic.
Step 4: Note the Battery’s Orientation and Remove It
Once the key fob is open, you will see the circular coin cell battery sitting in its compartment. Before you remove it, pay close attention to which side is facing up. In almost all cases, the positive (+) side, which is typically marked with large text including the battery model number (CR2032), will be facing you. Remembering this orientation is the most critical part of the process. You can use your finger or the same small screwdriver to gently pry the old battery out of its housing. It should pop out with very little effort.
Step 5: A Key Method for How to Change Battery in Infiniti Key Fob: Insert the New Battery
Now it’s time to install the fresh battery. Take your new CR2032 battery and, making sure to avoid touching the flat surfaces with your bare fingers, slide it into the compartment. The oils from your skin can reduce the battery’s lifespan and conductivity. Make sure you install it in the exact same orientation as the old one, with the positive (+) side facing up, visible to you. The battery should click or snap securely into place. A properly seated battery ensures a solid connection and reliable performance for your key fob.
Step 6: Reassemble the Key Fob Case
With the new battery securely in place, you are ready to put the fob back together. Take the two halves of the plastic casing and carefully align them. Start at one end and press them together firmly. You should hear a series of satisfying clicks as the internal clips re-engage and lock the case shut. Squeeze along the entire seam of the fob to ensure that it is completely sealed, with no gaps. A properly closed case protects the internal circuitry from dust and moisture, which is vital for its longevity.
Step 7: Test Your Key Fob
The final step is to make sure your work was successful. Stand near your Infiniti and test the functions of the key fob. Press the lock and unlock buttons to see if the doors respond. If your car has a panic button, you can test that as well. You should notice an immediate improvement in the fob’s responsiveness and range. If the buttons work as they should, you have successfully completed the battery change. If it does not work, the most likely culprit is an incorrectly installed battery, so you may need to reopen the case and double-check its orientation.
Troubleshooting Common Key Fob Issues
If your key fob still doesn’t work after replacing the battery, there are a few common issues to consider:
- Check the Battery Orientation
Ensure the new battery is installed correctly. The positive (+) and negative (-) sides must align with the markings inside the battery compartment. - Inspect the Battery Contacts
The metal contacts inside the fob may be dirty or bent. Use a clean cloth or cotton swab to gently remove any dirt or debris. If the contacts are bent out of shape, carefully adjust them to ensure a firm connection with the battery. - Verify the New Battery
Occasionally, new batteries can be defective. Test the battery with a multimeter or try using a different one to rule this out. - Reprogram the Key Fob
Some key fobs may lose their pairing with the vehicle after the battery is replaced. Refer to your vehicle’s manual for steps on reprogramming the fob or consult a professional. - Examine for Physical Damage
Inspect the fob for cracks, broken buttons, or other visible damage that could prevent it from functioning properly. If you notice significant wear and tear, a replacement fob may be necessary.
If these troubleshooting steps do not resolve the issue, it’s best to contact your dealership or a professional locksmith for further assistance.
Frequently Asked Questions (FAQ)
What Type of Battery Does an Infiniti Key Fob Use?
The vast majority of modern Infiniti Intelligent Keys use a CR2032 3-volt lithium coin cell battery. It’s a very common battery type available at most drugstores, supermarkets, and online retailers. To be absolutely certain, you can either check your vehicle’s owner’s manual or simply open the fob to read the model number printed on the old battery before you purchase a new one.
Will I Need to Reprogram My Key Fob After Changing the Battery?
No, you will not need to reprogram your Infiniti key fob after a battery change. The fob has an internal memory chip that stores its unique code, and this chip does not require power to retain the information. As soon as you install the new battery, the fob should immediately communicate with your vehicle without any need for reprogramming, saving you a trip to the dealership.
What Are the Signs That My Key Fob Battery Is Dying?
There are several clear signs that your fob’s battery is getting low.
- Reduced Range: You may have to get closer and closer to your car for the lock and unlock buttons to work.
- Dashboard Warning: Many Infiniti models will display a “Key Battery Low” or similar message on the instrument panel.
- Inconsistent Performance: The fob may work sometimes but not others, requiring multiple button presses.
What Should I Do if My Key Fob Still Doesn’t Work After Changing the Battery?
If a new battery doesn’t solve the problem, double-check that the battery was installed correctly (positive side up) and that it’s the correct model (CR2032). Ensure the battery contacts inside the fob are clean. If it still fails to work, the issue may be with the fob’s internal electronics or your car’s receiver. At this point, it may be necessary to contact your Infiniti dealership for a professional diagnosis.
How Can I Start My Infiniti if the Key Fob Battery Is Completely Dead?
Even with a dead fob, you can still get in and start your car. Use the mechanical key hidden inside the fob to unlock the driver’s door manually. Once inside, you’ll need to place the “dead” Infiniti fob in the designated Intelligent Key port, which is often located in the center console or to the left of the steering wheel. This allows the car to read the fob’s transponder chip directly, letting you start the engine with the push-button ignition.
Conclusion
Changing the battery in your Infiniti key fob is a simple, quick, and empowering piece of DIY maintenance that anyone can perform. It saves you the time and expense of a dealership visit for what amounts to a five-minute task. By following the straightforward steps of removing the mechanical key, opening the case, and swapping the battery correctly, you can restore your key fob to perfect working order. Now that you have a clear guide on how to change battery in infiniti key fob, you can handle this common issue with confidence and keep your luxury vehicle experience as seamless as it was designed to be.