2018 Nissan Key Fob Battery: Size & Replacement Guide

by Alex Braham 54 views

Hey guys! Ever find yourself fumbling with your car keys, only to realize your Nissan key fob is dead? Super frustrating, right? Especially when you're trying to unlock your 2018 Nissan and get on with your day. Well, don't worry, you're not alone! A dead key fob battery is a super common issue, and luckily, it's an easy fix. This guide is all about the 2018 Nissan key fob battery, specifically the size you need and how to replace it. No need to stress, we'll walk you through it step by step, so you can get back to cruisin' in no time!

Identifying the Correct Battery Size

Okay, so first things first: figuring out the right battery size for your 2018 Nissan key fob. You don't want to just grab any battery and hope for the best – that could cause problems! The good news is that most Nissan key fobs, including the ones for the 2018 models, typically use a CR2032 battery. This is a common 3-volt lithium coin cell battery that you can find pretty much anywhere batteries are sold. Think drugstores, supermarkets, hardware stores, and of course, online retailers like Amazon.

But, and this is a big but, it's always a good idea to double-check! Why? Because sometimes, just sometimes, there might be slight variations depending on the specific model or region your car was manufactured for. So, before you head out to buy a new battery, take a peek inside your key fob. I know, it sounds intimidating, but trust me, it's not rocket science. We'll cover how to open it up in the next section.

Once you've got the key fob open, you'll see the battery sitting snugly inside. Look closely at the battery itself. You should see a code printed right on it. It'll likely say "CR2032," but just make sure that the numbers match. If, for some reason, it's a different number, then that's the battery you need to hunt down. Write it down so you don't forget! Using the correct battery ensures that your key fob functions properly, giving you the range and reliability you expect. Plus, using the wrong size could potentially damage the fob, and nobody wants that.

Step-by-Step Guide to Replacing the Battery

Alright, now for the fun part: replacing the battery! Don't worry, this is a super simple DIY task that anyone can handle. You'll save yourself a trip to the dealership and a potentially hefty bill. Here's what you'll need:

  • A new CR2032 battery (or whatever size you identified in the previous step).
  • A small flathead screwdriver or a similar tool to help you open the key fob. (Sometimes a fingernail will do the trick!)
  • A soft cloth to protect the key fob from scratches.

Got your supplies? Great! Let's get started:

  1. Protect Your Key Fob: Lay the soft cloth on a flat surface. This will prevent any scratches or damage to your key fob while you're working on it.
  2. Open the Key Fob: Now, this is where things can vary slightly depending on the exact design of your 2018 Nissan key fob. Most fobs have a small slot or indentation somewhere along the edge. Take your small flathead screwdriver (or your fingernail if you're feeling brave) and gently insert it into the slot. Twist or pry carefully to separate the two halves of the key fob. If you're having trouble, don't force it! Check for any screws that might be holding the fob together. Some models have a tiny screw hidden somewhere on the back.
  3. Locate the Battery: Once you've got the key fob open, you'll see the battery. It's usually held in place by a small clip or a plastic housing.
  4. Remove the Old Battery: Use your fingernail or the tip of the screwdriver to gently pry the old battery out of its holder. Pay attention to which side is facing up – you'll need to insert the new battery the same way.
  5. Insert the New Battery: Take your new CR2032 battery and slide it into the holder, making sure the positive (+) side is facing the correct direction. It should snap into place easily.
  6. Reassemble the Key Fob: Now, carefully snap the two halves of the key fob back together. Make sure they're aligned properly and that all the edges are flush. If you removed any screws, replace them now.
  7. Test the Key Fob: That's it! You're done! Now, test your key fob to make sure it's working properly. Try unlocking and locking your car, and see if the panic button works. If everything works, you're good to go! If not, double-check that the battery is installed correctly and that the key fob is fully assembled.

Tips and Tricks for Key Fob Battery Replacement

Okay, so you've got the basic steps down, but here are a few extra tips and tricks to make the process even smoother:

  • Don't Use a Metal Screwdriver (Unless You're Super Careful): Metal screwdrivers can scratch the plastic on your key fob, so try to use a plastic one if you have it. If you must use a metal one, be extra careful not to slip.
  • Static Electricity is the Enemy: Before you start, touch a metal object to discharge any static electricity. This can prevent damage to the key fob's electronics.
  • Keep the Battery Away from Kids and Pets: CR2032 batteries are small and can be a choking hazard. Keep them out of reach of children and pets.
  • Dispose of Old Batteries Properly: Don't just throw your old battery in the trash! Take it to a recycling center or a battery disposal location. These batteries contain materials that can be harmful to the environment if not disposed of properly.
  • If You're Not Comfortable, Get Help: If you're not comfortable opening your key fob or replacing the battery yourself, don't hesitate to take it to a professional. A locksmith or a car dealership can do it for you.

Troubleshooting Common Issues

Sometimes, even after replacing the battery, your key fob might still not work. Here are a few common issues and how to troubleshoot them:

  • Key Fob Not Working After Battery Replacement:
    • Check the Battery Orientation: Make sure the battery is installed with the correct polarity (+ side up).
    • Clean the Battery Contacts: Sometimes, the battery contacts inside the key fob can get dirty or corroded. Use a cotton swab and some rubbing alcohol to clean them.
    • Resync the Key Fob: In some cases, you may need to resync the key fob with your car. Refer to your owner's manual for instructions on how to do this. The process usually involves pressing a combination of buttons on the key fob and the car.
  • Key Fob Range is Limited:
    • Obstructions: Make sure there are no obstructions between you and your car, such as buildings or other vehicles.
    • Interference: Electronic devices can sometimes interfere with the key fob signal. Try moving away from any potential sources of interference, such as cell phones or Wi-Fi routers.
    • Weak Battery: Even a new battery can sometimes be weak. Try a different brand of battery to see if that helps.
  • Key Fob Buttons Not Responding:
    • Clean the Buttons: Dirt and grime can sometimes get stuck under the buttons, preventing them from working properly. Use a cotton swab and some rubbing alcohol to clean the buttons.
    • Check for Damage: Inspect the key fob for any signs of damage, such as cracks or broken buttons.

When to Consider Professional Help

While replacing a key fob battery is usually a simple task, there are some situations where you might want to consider getting professional help:

  • If You're Not Comfortable Opening the Key Fob: If you're worried about damaging your key fob, it's best to leave it to a professional.
  • If You've Tried Everything and the Key Fob Still Doesn't Work: There could be a more serious problem with the key fob, such as a faulty circuit board. A professional can diagnose the problem and repair or replace the key fob.
  • If You Need to Resync the Key Fob and Can't Figure Out How: Resyncing a key fob can sometimes be complicated, and you may need special equipment to do it. A professional can resync the key fob for you.

Purchasing the Correct Battery

Alright, so you know you need a CR2032 battery (most likely), but where do you actually buy one? You've got plenty of options, both online and in brick-and-mortar stores. Here's the lowdown:

  • Online Retailers: Amazon, eBay, and other online retailers are great places to find CR2032 batteries. You'll usually find a wide variety of brands and prices, and you can read reviews from other customers before you buy. Just make sure you're buying from a reputable seller.
  • Drugstores and Supermarkets: Places like Walgreens, CVS, and your local supermarket usually carry CR2032 batteries in their battery aisle. This is a convenient option if you need a battery right away.
  • Hardware Stores: Hardware stores like Home Depot and Lowe's also sell CR2032 batteries. They might have a slightly smaller selection than drugstores or supermarkets, but they're still a good option.
  • Auto Parts Stores: Auto parts stores like AutoZone and Advance Auto Parts also sell CR2032 batteries, and they might even be able to help you replace the battery if you're not comfortable doing it yourself.

When you're buying a CR2032 battery, pay attention to the brand and the expiration date. Name-brand batteries like Duracell and Energizer are usually more reliable than generic brands. Also, make sure the battery hasn't expired, as expired batteries may not have as much power.

Conclusion

So, there you have it! Everything you need to know about the 2018 Nissan key fob battery size and how to replace it. Remember, most 2018 Nissan key fobs use a CR2032 battery, but it's always a good idea to double-check before you buy a new one. Replacing the battery is a simple DIY task that can save you time and money. Just follow the steps in this guide, and you'll be back on the road in no time! And if you run into any problems, don't hesitate to seek professional help. Happy driving!