Nissan Murano 2015: Key Fob Battery Replacement Guide

Nov 8, 2025 by Admin 54 views

Hey guys! Ever found yourself stranded because your Nissan Murano 2015 key fob decided to give up the ghost? Yeah, it's a pain, but don't sweat it. Replacing the battery in your key fob is super easy, and you can totally do it yourself. This guide will walk you through everything you need to know to get your key fob back in action.

Why Your Key Fob Battery Matters

Key fob batteries are the unsung heroes of modern car ownership. We rely on these little devices every day to unlock our cars, start the engine, and even activate the alarm system. Without a functioning key fob, you might find yourself fumbling with physical keys (gasp!) or, worse, stuck outside your car. Keeping your key fob in good working order is crucial for convenience and security.

Why do key fob batteries die anyway? Well, like any battery, they have a limited lifespan. The constant transmission of signals between the fob and your car gradually drains the battery. Factors like frequency of use, environmental conditions (extreme heat or cold), and even the quality of the battery itself can affect how long it lasts. Typically, a key fob battery will last between one to three years. But don't worry, replacing it is a simple and inexpensive task.

Signs that your key fob battery is dying:

Reduced Range: Notice you have to get closer and closer to your car for it to unlock? That's a classic sign. If you used to be able to unlock your doors from across the parking lot, but now you have to be right next to the car, your battery is likely on its way out.
Inconsistent Performance: Sometimes it works, sometimes it doesn't? Intermittent performance is another telltale sign. If you press the button and nothing happens, then you try again and it works, the battery is probably weak.
Dashboard Warning Light: Some Nissan Murano models have a warning light on the dashboard that indicates a low key fob battery. Keep an eye out for this light, as it's a clear indication that it's time for a replacement.
Key Fob Not Detected: Your car might display a message like "Key Not Detected" or "No Key Found" when you try to start it. This can happen even if the key is inside the car. A dead or dying battery is a common cause of this issue.
Difficulty Starting the Car: In some cases, a weak key fob battery can make it difficult to start the car, especially if your car has a push-button start. The car might not recognize the key, preventing you from starting the engine.

Pro Tip: It's always a good idea to replace your key fob battery before it dies completely. This can save you from the inconvenience of being locked out of your car or having trouble starting it. Plus, batteries are cheap and easy to replace, so there's really no reason to wait until the last minute.

What You'll Need

Before you dive in, gather these few simple tools. Having everything on hand will make the process smooth and stress-free. You probably already have these items lying around the house!

New Battery: You'll need a CR2032 battery. These are widely available at drugstores, supermarkets, auto parts stores, and online retailers. Make sure you get a reputable brand for longer life.
Small Flathead Screwdriver: A small screwdriver will help you open the key fob casing without damaging it. Precision screwdrivers or eyeglass screwdrivers work great.
Soft Cloth or Tape: To protect the key fob from scratches, you can use a soft cloth or tape to cover the tip of the screwdriver.

That's it! With these simple tools, you're ready to tackle the battery replacement.

Step-by-Step Guide to Replacing Your Key Fob Battery

Alright, let's get down to business. Follow these simple steps, and you'll have your key fob working like new in no time. Take your time and be gentle; you don't want to damage the key fob.

Step 1: Open the Key Fob

Locate the Notch: Look for a small notch or slot on the side or bottom of the key fob. This is where you'll insert the screwdriver to open the casing. The location of the notch can vary slightly depending on the exact model of your key fob, so take a close look.
Insert the Screwdriver: Gently insert the tip of the flathead screwdriver into the notch. Apply a small amount of pressure and twist the screwdriver to pry the key fob open. Be careful not to use too much force, as this could crack the plastic casing. If you're having trouble, try wiggling the screwdriver slightly while applying pressure.
Separate the Halves: Once you've created a small opening, carefully separate the two halves of the key fob. You might need to run the screwdriver along the seam to fully separate them. Again, be gentle and avoid using excessive force. The key fob should come apart relatively easily.

Step 2: Remove the Old Battery

Locate the Battery: Once the key fob is open, you'll see the battery inside. It's usually held in place by a small clip or bracket. Take a moment to note the orientation of the battery (which side is facing up) so you can install the new one correctly.
Remove the Battery: Use the tip of the screwdriver or your fingernail to gently pry the battery out of its housing. Be careful not to damage the surrounding components. If the battery is held in place by a clip, gently push the clip aside to release the battery.

Step 3: Install the New Battery

Insert the New Battery: Place the new CR2032 battery into the battery compartment, making sure the orientation is correct (the same way the old battery was installed). The positive (+) side of the battery should usually face up, but double-check to be sure.
Secure the Battery: Make sure the battery is securely in place. If there's a clip or bracket, ensure it's holding the battery firmly. A loose battery can cause intermittent performance issues.

Step 4: Close the Key Fob

Reassemble the Halves: Carefully align the two halves of the key fob and press them together until they snap back into place. Make sure there are no gaps or loose areas. The key fob should feel solid and secure.
Test the Key Fob: Once the key fob is reassembled, test it to make sure it's working properly. Press the buttons to lock and unlock your car, and try starting the engine. If the key fob doesn't work, double-check that the battery is installed correctly and that the key fob is fully closed. If you're still having trouble, try cleaning the battery contacts with a cotton swab and a little bit of rubbing alcohol.

Tips and Tricks for Key Fob Battery Replacement

Protect the Casing: To avoid scratching the key fob casing, wrap the tip of the screwdriver with a soft cloth or tape before inserting it into the notch. This will help prevent damage to the plastic.
Work on a Soft Surface: Place a soft cloth or towel on your work surface to protect the key fob from scratches and prevent small parts from rolling away.
Take a Photo: Before removing the old battery, take a photo of the battery compartment with your phone. This will help you remember the correct orientation of the battery when you install the new one.
Clean the Contacts: If your key fob is still not working after replacing the battery, try cleaning the battery contacts with a cotton swab and a little bit of rubbing alcohol. Dirt or corrosion on the contacts can prevent the battery from making a good connection.
Use Quality Batteries: Invest in high-quality CR2032 batteries from a reputable brand. Cheap batteries may not last as long or provide consistent performance.

Troubleshooting Common Issues

Even with the best instructions, things can sometimes go wrong. Here are a few common issues you might encounter and how to solve them:

Key Fob Won't Open: If you're having trouble opening the key fob, make sure you're inserting the screwdriver into the correct notch and applying gentle pressure. Try wiggling the screwdriver slightly while applying pressure. If the key fob is particularly stubborn, you may need to use a slightly larger screwdriver, but be careful not to use too much force.
Key Fob Won't Close: If the key fob won't close properly, make sure the two halves are aligned correctly and that there are no obstructions. Check for any small pieces of plastic or debris that might be preventing the key fob from closing completely. If necessary, gently press the two halves together until they snap into place.
Key Fob Still Doesn't Work: If your key fob still doesn't work after replacing the battery, double-check that the battery is installed correctly and that the key fob is fully closed. Try cleaning the battery contacts with a cotton swab and a little bit of rubbing alcohol. If you're still having trouble, the key fob may need to be reprogrammed by a professional.

Conclusion

So there you have it! Replacing the battery in your Nissan Murano 2015 key fob is a breeze. With a few simple tools and this guide, you can save yourself a trip to the dealership and get back on the road in no time. Remember to take your time, be gentle, and follow the steps carefully. Happy driving!