Ford Key Fob Battery Replacement

This article provides instructions on how to change the battery on Ford key fob remotes.

These instructions apply to many models such as Ford cars and trucks.These instructions are helpful for owners of Ford and Lincoln vehicles such as the Focus, Fiesta, C-Max, Mustang, Escape, Transit Connect, Edge, Flex, Explorer, Expedition, Taurus, F-150, EcoSport, MKC, MKZ, MKS, MKX, MKT and the Navigator.

Intelligent Key Fob Battery Replacement

Battery Size



ford key fob battery replacement


  1. Turn the remote over and on the rear of the remote press the release button.
  2. Remove the plastic cover from the remote. Place the back cover to the side. You will not see the batteries yet. 
  3. Insert a flat screwdriver into the slot and twist it to open up the remote. You should be able to pry the two parts of the keyfob. 
  4. Now you should be able to see the two coin cell batteries. 
  5. Remove the first battery. Underneath it you will see a white piece of paper. Remove the paper and pull out the bottom battery as well. 
  6. Change both batteries. Use a flat screwdriver to pop out the batteries. 
  7. Slide in two new CR2025 batteries. Make sure that the negative (-) side is facing you. 
  8. Install the emergency metal key back in place.
  9. Align the two parts with each other and press them together. The two halves should snap together as shown in the video above.
  10. Test the Ford key fob remote by standing outside the car and pressing "Lock" or "Unlock" buttons. 


  • Ford Fusion
  • Ford Mustang
  • Ford F150 F-150


2013, 2014, 2015, 2016, 2017, 2018

Keyless Remote Battery Replacement 


Battery Size



💡 Help us improve this article by providing feedback. No registration is required. 

Need Help?

💭 Ask car questions in our Car Forum.

user profile image
Gerald herche made a comment.
2 years 1 month ago

Does the paper go back between batteries? Does the fist battery in go with - down and the second with - up?

user profile image
Visitor made a comment.
2 years 1 month ago

The Negative (-) should face you, while the Possitive (+) faces the back cover. Both batteries go same direction. Therefore the - of the first battery should be touching the back of the second on the + side. The paper goes back the same as before.

user profile image
TriGuy made a comment.
4 months ago

That's incorrect. Many of these 2 battery Ford fob's have the batteries going in opposite each other. Follow the orientation on the paper, which does show opposite orientation between top and bottom, with paper between the two batteries.

user profile image
Sharlette Madison made a comment.
1 year 1 month ago

Should I have to replace the battery on a 2017 Ford 3 months into 2018? I expected maybe every 3 years. Is there something I could be doing that drained it this quickly?

user profile image
gbcumings made a comment.
8 months 4 weeks ago

I've had the same problem and, although I drive little (only 3700 miles in the 9 months since I bought it), the notifications began about 3 months in and it finally gave up last week.

I thought that it could be due to having left the spare in the console for convenience in moving it around my "driveway/yard" and the less than 3 minute trip to my sister's house (where, of course, is where it died late at night and I'd accidentally left the other at home, haha?).

Did you by any chance do something similar? Maybe we just received some from an old/defective batch.

user profile image
dvh made a comment.
1 year ago

For the 2015 mustang I had to put the paper back in between, bottom battery facing positive up, top battery negative up (like the picture on the paper shows)

user profile image
LEB made a comment.
4 months 3 weeks ago


user profile image
batterykid made a comment.
3 months ago

The newest Ford Smart key takes a larger CR2450 battery, but it's a pretty easy change. Just pop out the valet key, pop off the back of the fob and you're all set. See this list of all Ford key fob batteries.

user profile image
Suzette Kimball made a comment.
2 months 3 weeks ago

Trying to change batteries.. Batteries inserted as directed. NOW, can't snap battery cover and back cover on. Yes, i did watch the video. Any ideas.


Add new comment