Your 2015 Ford Explorer key fob battery likely needs a CR2032 coin cell. Replacing it is a simple DIY fix that can restore your remote’s functionality quickly. This guide walks you through exactly how to do it safely and easily.
Is your 2015 Ford Explorer key fob acting up? Do the buttons seem unresponsive, or does the unlock/lock function only work when you’re right next to your SUV? Don’t worry, this is a super common problem, and it’s usually caused by a simple issue: a dead battery in your key fob. It’s frustrating not being able to easily get into your car or start it, but the good news is that fixing this is usually a quick and easy DIY job that anyone can do. In this guide, Roy Walker will show you step-by-step how to swap out that old battery for a fresh one, getting your key fob back in working order without needing a trip to the dealer. Let’s get your Explorer’s remote working like new again!
Why Your 2015 Ford Explorer Key Fob Needs a New Battery
Over time, the battery inside your 2015 Ford Explorer key fob will naturally lose its power. This is just like how the battery in your TV remote or your phone eventually needs replacing. Your key fob uses a small battery to send a signal to your car. When this battery gets weak, the signal becomes weak or stops altogether.
This means you might notice:
Your key fob only works when you’re really close to the car.
You have to press the buttons multiple times for them to register.
The key fob stops working completely.
Trying to start your 2015 Ford Explorer might also become an issue. Modern cars use the key fob’s signal to confirm it’s the correct key before allowing the engine to start. A weak or dead battery can prevent your Explorer from recognizing the key, leaving you stranded.
The good news? Replacing this battery is usually one of the simplest maintenance tasks for your vehicle. It doesn’t require fancy tools or technical skills.
What You’ll Need: Tools and Battery
Before you start, gather what you need. This makes the process smooth and prevents you from having to hunt for supplies mid-way.
The Right Battery
The standard battery for a 2015 Ford Explorer key fob is a small, round, silver coin cell battery. The most common type is the CR2032 3-volt lithium coin cell battery. These are widely available at most:
Grocery stores
Drug stores
Electronics stores
Hardware stores
Online retailers
It’s always a good idea to pick up a pack of two, so you have a spare for later or for a second key fob. Always double-check your key fob’s manual or look for markings on the inside casing if you’re unsure.
Tools for the Job
You typically won’t need much, and often, you can get by with just one simple tool:
A small, flathead screwdriver or a plastic pry tool: This is usually all you need to gently open the key fob case. A plastic pry tool is preferable as it’s less likely to scratch or damage the plastic casing of your key fob. If you don’t have one, a very thin flathead screwdriver can work, but be extra careful.
A clean, soft cloth: To wipe away any dust or debris from the inside of the fob.
That’s it! No special car knowledge or advanced tools required.
Step-by-Step Guide: Replacing Your 2015 Ford Explorer Key Fob Battery
Let’s get this done. Follow these steps carefully, and you’ll have a working key fob in no time.
Step 1: Locate the Seam on Your Key Fob
Take a good look at your 2015 Ford Explorer key fob. You’ll notice it’s made of two halves that snap together. Find the small seam or gap that runs around the edge where these two halves meet. Sometimes, there’s a tiny notch designed as a starting point for opening it.
Step 2: Gently Pry Open the Key Fob
This is where your small flathead screwdriver or plastic pry tool comes in.
1. Carefully insert the tip of your tool into the seam you found. You might want to start at a corner or near a button.
2. Gently twist the tool. You’re not trying to force it. You should hear a faint click as the plastic catches release.
3. Work your way around the seam with the tool, gently prying. The two halves of the fob should start to separate.
4. Be patient! Don’t use excessive force, as this can break the plastic clips that hold the fob together.
Once you’ve worked your way around, the back cover should lift off, or the two halves will separate.
Step 3: Identify and Remove the Old Battery
Inside the key fob, you’ll see a small, round battery – likely the CR2032 you acquired.
1. Note how the battery is positioned. It usually sits in a little cradle.
2. You might be able to gently push the old battery out from the side with your finger.
3. If it’s stuck, use your flathead screwdriver or pry tool to carefully lever it up and out. Again, be gentle. You don’t want to damage the contacts inside the fob.
Step 4: Insert the New Battery
This is a critical step. Batteries have a positive (+) and negative (-) side.
1. Look at the battery compartment inside the key fob. You should see markings indicating which way the battery should face.
2. Take your new CR2032 battery. The side with the writing and the (+) symbol is usually the positive side, which faces upwards (or towards the inside of the fob, depending on design). The flat, plain side is negative.
3. Carefully place the new battery into the cradle, ensuring it’s oriented correctly (+ side up).
4. Gently press down on the battery. It should sit snugly in place. You might hear a small click.
Step 5: Reassemble the Key Fob
Now, snap the two halves of your key fob back together.
1. Align the two halves carefully.
2. Gently press them together around the edges. You should hear the plastic clips snap back into place.
3. Continue pressing until the case is securely closed all the way around.
Step 6: Test Your Key Fob
The moment of truth!
1. Stand a reasonable distance from your 2015 Ford Explorer (not too close, not too far – about 10-20 feet is a good test range).
2. Press the lock button. Your doors should lock, and the lights should flash.
3. Press the unlock button. Your doors should unlock.
4. Try any other buttons (panic, trunk release) to ensure they work too.
If it all works, congratulations! You’ve successfully replaced your key fob battery.
Troubleshooting Common Key Fob Issues
Even with a new battery, sometimes things don’t work perfectly right away. Here are a few things to check if your key fob is still acting up:
Battery Orientation: Double-check that the new CR2032 battery is inserted with the correct side facing up (usually the side with the “+” marking). An incorrectly installed battery won’t power the fob.
Battery Not Seated Properly: Make sure the battery is firmly in its cradle and making good contact with the terminals inside the fob. Sometimes it just needs a little extra push to sit perfectly.
Corroded Contacts: If the battery contacts inside the fob look dirty or corroded, you can try gently cleaning them with a pencil eraser or a cotton swab lightly dampened with isopropyl alcohol (make sure it’s fully dry before reassembly).
Damage to the Fob: Inspect the key fob itself for any cracks or damage, especially around the buttons or the internal circuit board. Physical damage can cause issues beyond the battery.
Low Battery Life on New Battery: While rare, a brand-new battery could be faulty or have low charge from sitting on a shelf for too long. Trying another new battery can help rule this out.
Car’s Receiver Issues: In very rare cases, the problem might be with your vehicle’s receiver system rather than the key fob. If multiple key fobs fail and a new battery doesn’t help, this might be something for a mechanic to look at.
Understanding Key Fob Battery Lifespan
The battery in your 2015 Ford Explorer key fob is small and works hard to send signals. Its lifespan depends on several factors:
Usage Frequency: How often you use the remote functions. Constantly locking and unlocking, or frequently using other buttons, will drain the battery faster.
Battery Quality: Higher-quality batteries tend to last longer than cheaper, generic ones.
Environmental Conditions: Extreme temperatures (hot or cold) can affect battery performance and longevity.
Interference: Strong radio frequency interference in certain areas can sometimes cause the fob to work harder and drain the battery quicker.
On average, a key fob battery might last anywhere from 1 to 3 years. Paying attention to the warning signs, like a weak signal, can help you replace it before it dies completely.
Comparing Key Fob Batteries: CR2032 and Alternatives
The CR2032 is a ubiquitous and reliable choice for many key fobs, including the 2015 Ford Explorer. Let’s look at why it’s favored and what other options might exist, though sticking to the manufacturer’s recommendation is always best.
The CR2032: The Standard and Why
Voltage: It operates at a steady 3 volts, which is what most key fobs are designed for.
Size and Shape: Its compact, thin coin shape fits neatly into the small confines of a key fob.
Availability: As mentioned, it’s incredibly easy to find almost anywhere batteries are sold.
Longevity: Offers a good balance of power and lifespan for its size.
Other Coin Cell Batteries to Consider (and Why They Might Not Be Ideal)
While CR2032 is the go-to, you might see other coin cell batteries. It’s important to only use the battery specified for your vehicle.
| Battery Type | Voltage | Typical Use | Why it might NOT be suitable for your 2015 Explorer FOB |
| :———– | :—— | :—————————————- | :———————————————————————– |
| CR2025 | 3V | Car key fobs, small remotes, calculators | Slightly thinner and has less capacity than CR2032; may drain faster. |
| CR2016 | 3V | Small electronics, key fobs, watches | Significantly less capacity; will likely need replacement much sooner. |
| CR1632 | 3V | Key fobs, medical devices, computer motherboards | Similar to CR2032 but can be a different diameter; check fob carefully. |
| CR3032 | 3V | Larger devices, some remotes | Too large to fit in a standard 2015 Ford Explorer key fob. |
Ford specifically designs the 2015 Explorer key fob to house a CR2032. Using a different battery, even if it seems to physically fit, could lead to:
Poor Performance: The fob might not transmit signals effectively.
Reduced Lifespan: A lower-capacity battery will need replacing more often.
Damage to the Fob: An incorrectly sized battery might not sit properly, or a higher-power battery might overwhelm the circuits.
For the most reliable performance from your 2015 Ford Explorer key fob, always opt for a reputable brand of CR2032 batteries.
Where to Buy Replacement Batteries
As Roy Walker always says, “Stock up when you can!” Buying batteries from reliable sources ensures you get fresh, quality products that will last.
Here are some excellent places:
Major Retailers: Stores like Walmart, Target, and Costco often have multi-packs of CR2032 batteries from well-known brands (Duracell, Energizer, Panasonic). Buying in bulk is usually the most cost-effective.
Drugstores: CVS, Walgreens, and Rite Aid are convenient options for picking up a battery when you need one quickly. They might be slightly more expensive per battery.
Electronics Stores: Best Buy and similar stores will have a good selection.
Hardware Stores: Home Depot and Lowe’s carry batteries, often in their electrical or automotive sections.
Online Giants: Amazon is a popular choice for buying batteries in bulk, often at competitive prices. Just ensure you’re buying from a reputable seller to get genuine products.
Automotive Parts Stores: AutoZone, O’Reilly Auto Parts, and Advance Auto Parts are great places to find CR2032 batteries, as they cater specifically to vehicle needs.
Pro Tip: Look for batteries with longer expiration dates. Batteries have a shelf life, so choosing fresher stock means they’ll last longer even before you install them. For detailed information on battery standards and safety, the Energizer website offers a good overview of battery types and care.
Protecting Your Key Fob and its Battery
Your key fob is a small piece of technology that protects your vehicle. Treating it with care will extend its life and the life of its battery.
Avoid Extreme Temperatures: Don’t leave your key fob in direct sunlight on the dashboard or in a freezing car for extended periods. Extreme heat or cold can affect battery performance and the electronic components.
Keep it Dry: While most fobs are fairly robust, prolonged exposure to moisture can cause corrosion to the internal contacts and electronics. Avoid dropping it in water or exposing it to heavy rain without protection.
Handle with Care: Avoid dropping the key fob on hard surfaces. While they are designed to be durable, repeated impacts can loosen internal components or damage the battery contacts.
Use the Right Battery: As emphasized, stick to the CR2032. Using the wrong type could damage the fob or lead to poor performance.
Regular Check-ups: If you have a spare key fob, consider swapping them periodically. This ensures both remain functional and can help you notice when one’s battery is starting to fade.
FAQ About 2015 Ford Explorer Key Fob Batteries
Here are some questions beginner drivers often ask about their key fob batteries:
Q1: How do I know if my key fob battery is dead?
A1: The most common signs are that your key fob stops working entirely, or you have to be very close to your 2015 Ford Explorer for it to respond. You might also notice the buttons require multiple presses before they work.
Q2: Can I use a rechargeable battery in my key fob?
A2: No, typically key fobs are designed for non-rechargeable coin cell batteries like the CR2032. Rechargeable batteries operate differently and can cause damage or malfunction to your key fob’s electronics.
Q3: How long should a new CR2032 battery last in my key fob?
A3: A good quality CR2032 battery should last anywhere from 1 to 3 years, depending on how often you use the key fob and environmental factors.
Q4: What happens if I put the battery in the wrong way?
A4: If the battery is installed with the wrong polarity (upside down), the key fob simply won’t work. It’s unlikely to cause permanent damage, but it’s always best to double-check the + and – markings before inserting the battery.
Q5: Do I need to reprogram my key fob after changing the battery?
A5: In most cases, for a 2015 Ford Explorer, you do not need to reprogram the key fob after simply replacing the battery. The internal memory stores its link to the vehicle.
Q6: My key fob still doesn’t work after replacing the battery. What else could be wrong?
A6: Check that the new battery is truly a CR2032, that it’s seated correctly with the right polarity, and that the contacts are clean. If those are all fine, the fob itself may be damaged, or there could be an issue with the vehicle’s receiver system. You might need a professional’s help. For further guidance on automotive electrical systems, resources like NHTSA’s page on vehicle safety provides valuable context for automotive maintenance.
* Q7: Can I buy a replacement key fob case if mine is damaged?
A7: Yes, you can often find replacement key fob cases online. You would then transfer the internal circuit board and the new battery into the fresh case. However, ensure you buy a case specifically for your 2015 Ford Explorer model.
Conclusion: Keep Your Explorer Accessible and Secure
There you have it! Replacing the battery in your 2015 Ford Explorer key fob isn’t a daunting task. It’s a straightforward DIY job that can save you time and money. By following these simple steps, you can quickly restore full functionality to your remote, ensuring easy access to your vehicle remains a breeze. Remember to keep a spare CR2032 battery handy, and you’ll be prepared the next time your fob signals that it’s running low. A little bit of know-how goes a long way in keeping your car running smoothly and securely.
