The battery in your Ford Explorer key fob typically lasts three to four years, and you can replace it yourself in under five minutes with no tools
Your Ford Explorer key fob uses a coin-cell battery—usually a CR2032 or CR2025—that you can buy at any pharmacy, grocery store, or hardware store for two to five dollars. The fob is designed to open without tools: you slide a coin or your fingernail into the seam on the edge, twist gently, and the two halves separate. Once it's open, the battery sits in a small metal holder and lifts straight out. You drop in the new battery with the positive side facing up (the side marked with a + symbol), snap the fob back together, and you're done.
The hardest part is usually finding the seam. On most Ford Explorer fobs, it runs around the edge where the front and back meet. Look for a thin line or a slight lip. If you can't find it by looking, run your fingernail around the perimeter until you feel a catch. Once you find it, insert a coin—a dime or penny works—and turn it gently, as if you were opening a battery compartment on a remote control. The fob will crack open.
Key Takeaways
- Ford Explorer key fobs use CR2032 or CR2025 coin-cell batteries that cost two to five dollars and last three to four years.
- You can open the fob by finding the seam around the edge and twisting a coin in it—no screwdriver or special tool is needed.
- The battery sits in a metal holder inside and lifts straight out; insert the new one with the positive (+) side facing up.
- After you snap the fob back together, test all the buttons before you put it away to make sure the battery is making contact.
Finding the Right Battery for Your Ford Explorer Fob
Before you open the fob, you need to know which battery it uses. Most Ford Explorer key fobs from 2011 onward use a CR2032, which is the most common coin-cell battery. Some older models use a CR2025, which is slightly thinner. If you're not sure, open the fob first and look at the number printed on the old battery—it will say CR2032 or CR2025 right on it.
You can buy either battery at a pharmacy (CVS, Walgreens), a grocery store, a hardware store (Home Depot, Lowe's), or online. They're inexpensive and usually stocked near the checkout or in the electronics aisle. Some car dealerships sell them too, but you'll pay more. Buy one extra battery while you're at it—coin-cell batteries last a long time in storage, and having a spare means you won't be stuck with a dead fob on a weekend.
How to Open the Fob Without Damaging It
The seam on a Ford Explorer fob is usually on the side or the bottom edge, depending on the model year. Look for a thin line that runs around the perimeter. If the fob has a Ford oval logo on the front, the seam is typically on the back or the side opposite the logo. Run your fingernail or a coin around the edge until you feel a slight catch or resistance—that's where the two halves meet.
Once you've found the seam, insert a coin (a dime, penny, or quarter all work) into the gap and turn it gently, as if you were opening a paint can. You're not trying to pry it open with force—just explore steady, light pressure and twist. The fob will crack open with a soft click. If it doesn't budge after a few gentle turns, you may have the seam in the wrong spot. Try another edge. Once it opens, set the front half aside on a clean surface so the small spring inside doesn't fall out.
Removing and Installing the New Battery
Inside the fob, you'll see a small metal holder with a coin-cell battery sitting in it. The battery is held in place by the metal tabs on either side of the holder. Lift the battery straight up and out—it should come free with no resistance. If it's stuck, you can use your fingernail to gently pry one edge up, but don't force it.
Before you install the new battery, look at the old one and note which side was facing up. The side marked with a + symbol (the positive side) should face up toward you when the fob is open. Insert the new battery into the holder with the positive side up, and press down gently until it sits flush in the metal tabs. The battery should not be loose—if it rocks or moves, it's not seated correctly. Lift it slightly and reposition it until it sits snugly.
Closing the Fob and Testing the Buttons
Once the battery is installed, align the two halves of the fob and press them together. You should hear or feel a soft click as the two halves snap back into place. If they don't snap together smoothly, the battery may not be seated correctly—open it again and check. The fob should close flush with no gaps.
Before you put the fob away, test all the buttons: lock, unlock, and panic (if your fob has one). Press each button a few times and listen for the click that means the button is making contact with the battery. If a button doesn't respond, open the fob again and make sure the battery is sitting all the way down in the holder. If the battery is seated correctly and the buttons still don't work, the battery may be defective—try a different one. Once all the buttons work, you're done.
When to Call a Dealership Instead
If you open the fob and the battery holder is corroded or damaged, or if the fob won't close properly after you've installed the new battery, a dealership can replace the entire fob. This usually costs between 150 and 300 dollars depending on the model year and whether you need a new remote or just a replacement shell. If the buttons don't work even after you've tried a fresh battery and reseated it, the fob's internal circuit may be damaged, and replacement is the only option.
If you're uncomfortable opening the fob or you've tried and the seam won't budge, a dealership or a local locksmith can do it for you. The cost is usually 20 to 50 dollars for the labor, plus the price of the battery. It's not a common repair, so call ahead to make sure they offer it before you drive over.
Frequently Asked Questions
How do I know if my key fob battery is dead?
A dead battery usually means the buttons don't respond when you press them, or they only work when you're very close to the car. Some fobs will work intermittently before the battery dies completely. If the buttons aren't responding, try replacing the battery first—it's the cheapest and fastest fix.
Can I use a different type of battery in my Ford Explorer fob?
No. The fob is designed for a specific battery size and voltage. Using a CR2025 in a fob that needs a CR2032 (or vice versa) may cause the buttons to work poorly or not at all. Always match the battery number printed on the old battery.
What if I lose the fob while it's open?
If you lose the battery or the spring inside the fob, you can buy a replacement battery at any pharmacy or hardware store. The spring is harder to replace—if you lose it, a dealership can order a new fob shell or a complete replacement fob. Call ahead to ask about the cost.
How long does a new battery last in a Ford Explorer key fob?
A new coin-cell battery typically lasts three to four years in a key fob, depending on how often you use it. If you use the fob frequently (multiple times a day), the battery may last closer to two years. If you use it rarely, it may last longer.
Do I need to reprogram my fob after changing the battery?
No. Changing the battery does not erase the fob's programming. Once you install the new battery and close the fob, it should work when ready without any reprogramming.