Hey there, fellow Subaru enthusiasts! Ever found yourself stranded because your key fob decided to take a nap? Don't worry, it happens to the best of us. The good news is, swapping out that little battery is a piece of cake, and you don't need to be a tech wizard to do it. In this guide, I'm going to walk you through how to change the battery in your Subaru key fob like a pro. We'll cover everything from figuring out what kind of battery you need to the actual replacement process, so you can get back on the road in no time.
Why Your Subaru Key Fob Battery Died (And Why You Should Care)
Before we jump into the how-to, let's chat a bit about why these batteries die in the first place. Key fob batteries, like any battery, have a limited lifespan. Typically, you can expect them to last anywhere from one to three years, but that can vary depending on usage and the specific fob. Things like how often you use the remote features (locking, unlocking, panic button) and even the ambient temperature can play a role. Think of it like this: the more you use it, the faster the battery drains.
Why should you care about a dead key fob battery? Well, it's more than just an inconvenience. Imagine being stuck in a parking lot, unable to unlock your car. Or worse, you might not be able to start your car if your Subaru uses a keyless ignition system. A dead fob battery can also mess with your car's security system, potentially leaving it vulnerable. So, staying ahead of the game and knowing how to replace the battery is a smart move for any Subaru owner. Plus, doing it yourself saves you a trip to the dealership and some extra cash – who doesn't love that?
Common Signs of a Weak Key Fob Battery
- Reduced Range: Notice you have to be closer and closer to your car for the fob to work? That's a classic sign.
- Inconsistent Operation: Sometimes it works, sometimes it doesn't. This erratic behavior is a red flag.
- Dashboard Warning Light: Some Subarus have a warning light that pops up on the dashboard when the key fob battery is low. If you see this, it's time to act!
- Keyless Entry Issues: If your car has keyless entry, you might find it's not working as reliably as it used to.
By recognizing these signs early, you can avoid a complete fob failure and keep your Subaru experience smooth and stress-free.
Gathering Your Supplies: What You'll Need
Alright, let's get down to business! Before you start tinkering with your key fob, you'll need to gather a few essential supplies. Don't worry, you probably have most of these lying around the house. Having everything ready beforehand will make the process much smoother and less frustrating.
First and foremost, you'll need a new battery. This is the heart of the operation, after all. Most Subaru key fobs use a CR2032 battery, but it's always a good idea to double-check your owner's manual or the old battery itself to be absolutely sure. These batteries are widely available at drugstores, supermarkets, and online retailers. Buying a quality battery from a reputable brand is crucial. Cheap batteries might not last as long or could even leak and damage your fob – not something you want!
Next up, you'll need a small flathead screwdriver. This will be your main tool for prying open the key fob casing. Make sure it's a small one, like the kind you'd use for eyeglasses, to avoid scratching or damaging the plastic. If you don't have a screwdriver, a thin coin or even a guitar pick can sometimes do the trick, but a screwdriver is definitely the safest and most reliable option. You might also want to have a soft cloth or towel handy. This will protect the fob from scratches while you're working on it. Place the fob on the cloth while you're disassembling it to avoid any accidental damage.
Finally, consider having a small container to keep the screws or any other small parts you remove from the fob. These little guys can be easily lost, and trust me, you don't want to be crawling around on the floor searching for a tiny screw. A small dish or even a plastic baggie will work perfectly. With your supplies gathered, you're ready to tackle this battery replacement like a champ!
Step-by-Step Guide: Replacing the Battery in Your Subaru Key Fob
Okay, guys, it's go-time! With your supplies in hand, let's dive into the step-by-step process of replacing the battery in your Subaru key fob. Don't worry, it's not rocket science. Just follow these instructions carefully, and you'll have your fob up and running in no time.
Step 1: Locate the Emergency Key and Remove It
Most Subaru key fobs have a physical emergency key hidden inside. This is a lifesaver if your battery dies completely and you can't unlock your car remotely. Before you do anything else, you need to remove this key. Look for a small release button or latch on the fob – it's usually on the side or the back. Press or slide the button, and the emergency key should slide out. Set the key aside in a safe place; you might need it later if something goes wrong during the battery replacement.
Step 2: Open the Key Fob Casing
Now comes the slightly tricky part: opening the fob casing. This is where your small flathead screwdriver comes in handy. Examine the fob carefully, and you'll notice a small seam or groove running along the edge. This is where the two halves of the casing come together. Insert the tip of your screwdriver into the seam and gently twist. You might need to apply a bit of pressure, but be careful not to force it too much, or you could crack the plastic. Work your way around the seam, twisting the screwdriver to pry the casing open. Some fobs might have small screws holding them together – if you see any, unscrew them before attempting to pry the casing open.
Step 3: Identify the Battery and Its Orientation
With the casing open, you'll see the circuit board and the battery. Take a good look at the battery – notice which side is facing up (usually the side with the + symbol). This is crucial because you'll need to insert the new battery in the same orientation. Make a mental note or even take a quick picture with your phone to be sure. You'll also want to identify how the battery is held in place. Some fobs have a small clip or retaining arm that you'll need to gently move to release the battery.
Step 4: Remove the Old Battery
Now, carefully remove the old battery. If there's a retaining clip, use your screwdriver to gently push it aside while you lift the battery out. Avoid using excessive force or metal tools that could scratch the circuit board. If the battery is stuck, try gently tapping the fob on a soft surface to dislodge it. Once the old battery is out, set it aside for proper disposal (more on that later).
Step 5: Insert the New Battery
Grab your new CR2032 battery and, making sure the orientation is correct (remember that + symbol!), slide it into the battery compartment. If there's a retaining clip, make sure it clicks back into place to secure the battery. Give the battery a gentle press to ensure it's fully seated.
Step 6: Reassemble the Key Fob
With the new battery in place, it's time to put the fob back together. Align the two halves of the casing and press them firmly together until they snap shut. If you removed any screws earlier, reinsert them now. Make sure the casing is fully closed and there are no gaps. If it doesn't close easily, double-check that the battery is properly seated and that no small parts are obstructing the closure.
Step 7: Test the Key Fob
Before you celebrate your success, give your key fob a test run. Press the buttons to lock and unlock your car, and see if the remote start (if applicable) works. If everything's working smoothly, congratulations! You've successfully replaced your Subaru key fob battery. If not, double-check that the battery is installed correctly and that the casing is fully closed. If you're still having trouble, consult your owner's manual or consider taking your fob to a professional.
Battery Disposal: Doing Your Part for the Environment
Okay, you've successfully replaced your key fob battery – awesome! But what about that old battery? Don't just toss it in the trash! Batteries contain materials that can be harmful to the environment if not disposed of properly. Fortunately, there are several easy ways to recycle your old batteries and do your part for the planet.
Many retailers that sell batteries, like drugstores and electronics stores, also have battery recycling programs. They often have collection bins where you can drop off your used batteries. Some communities also have local recycling centers that accept batteries. Check your local government's website or waste management services for information on recycling options in your area. Another option is to mail your batteries to a recycling facility. There are companies that specialize in battery recycling, and some even offer prepaid mail-in programs. This can be a convenient option if you don't have a recycling center nearby.
By taking a few extra minutes to dispose of your old batteries responsibly, you're helping to prevent harmful chemicals from leaching into the environment and conserving valuable resources. It's a small effort that makes a big difference!
Troubleshooting: What to Do If Things Go Wrong
Even with the best instructions, sometimes things don't go exactly as planned. If you've replaced your Subaru key fob battery and it's still not working, don't panic! There are a few things you can try before throwing in the towel.
First, double-check the battery orientation. This is the most common culprit. Make sure the + side of the battery is facing the correct way, as indicated in your fob's battery compartment. A simple upside-down battery can prevent the fob from working. Next, ensure the battery is fully seated and making good contact with the terminals. Sometimes, a battery might seem like it's in place, but it's not quite making a solid connection. Gently press on the battery to ensure it's snug.
If that doesn't work, try cleaning the battery contacts. Over time, the metal contacts inside the fob can become corroded or dirty, which can interfere with the electrical connection. Use a cotton swab dipped in rubbing alcohol to gently clean the contacts. Let them dry completely before reinserting the battery. Another potential issue is a damaged or worn-out key fob. If you've had your fob for a while, it's possible that the internal components have worn out or been damaged. If this is the case, you might need to replace the entire fob. Contact your Subaru dealer or a locksmith for assistance.
Finally, some Subaru models require you to resynchronize the key fob with the car after replacing the battery. This process usually involves pressing a specific sequence of buttons on the fob or inside the car. Consult your owner's manual for instructions on how to resynchronize your fob. If you've tried all these steps and your fob is still not working, it's time to seek professional help. A qualified technician can diagnose the problem and get you back on the road in no time.
Final Thoughts: You're a Key Fob Battery Replacement Pro!
There you have it, guys! You've officially mastered the art of changing the battery in your Subaru key fob. It's a simple task that can save you time, money, and a whole lot of hassle. By following these steps, you can keep your key fob in tip-top shape and avoid those frustrating moments when your car refuses to cooperate.
Remember, a little bit of preventative maintenance goes a long way. Keep an eye out for the signs of a weak battery, and don't wait until your fob dies completely to take action. With a fresh battery and a little know-how, you'll be ready to tackle any key fob challenge that comes your way. So go forth, Subaru owners, and conquer the world – one key fob battery at a time!