The small compact Ford C-Max has only had two key fobs so far in it’s short life. The smart key fob is an easy battery change, the other requires a bit more work. Both take the small CR2032 battery to replace. Here’s a link to all our Ford key fob battery replacement guides.
| Model | Trims | Generation | Years | Key Fob Type | SubType | Rechargeable? Ease of change | Battery | Buy |
|---|---|---|---|---|---|---|---|---|
| C-Max | 1.0 L Ecoboost, 1.6 L Duratec Ti-VCT, 1.6 L EcoBoost, Hybrid | 2nd | 2013, 2014, 2015, 2016, 2017, 2018, 2019 | Slim Smart Key | No | CR2032 | Check on Amazon | |
| C-Max | 1.0 L Ecoboost, 1.6 L Duratec Ti-VCT, 1.6 L EcoBoost, Hybrid | 2nd | 2013, 2014, 2015, 2016, 2017, 2018, 2019 | Rounded Key | No | CR2032 | Check on Amazon |
Contents
How to replace the Ford C-Max Slim Smart key fob battery
The slim smart key fob is a pretty easy replacement. You remove the internal valet key, then pry off the back of the fob to access the CR2032 battery to replace. Here’s my video on how to replace it:
This is the battery for the Ford C-Max smart key fob:
- IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
- DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
- DESIGNED TO LAST: 8-year leak-free shelf life
GIF Visual Guide
Alright. So in this video, I'm going to show you how to change the key Fob battery in a Ford C-Max. This is the slim smart key was used from 2013 to present. So the key to changing this battery is on the back here.
There's a little notch. You can pull this down and this releases this internal valet key. Go ahead and pull that out. And at the top here, there's kind of two points. You can get some leverage.
Basically what we want to do is be able to separate this backing from the main part of the Fob. And so to do that, we can get a little leverage underneath here. And if you have like a small flathead screwdriver, it's kind of handy. Once you have a little bit of separation, you can get in between these two parts here and start to pop this back off. And once you get this top right here, you can kind of pop the rest of it off and it will come off pretty easily.
So don't worry about the circuit board side. But here we've got the battery that we want to change. It's kind of held in by this metal piece here. Make sure to keep this in place. Pop this battery out if you got like paper clip or small flathead like this.
And the internal battery that you'll need is a CR 2032 3 volt battery. And just make sure when you put the new one back in on this one, make sure that the positive side is up. Excuse me, the negative side is up towards you. The negative side doesn't have any writing on it. The positive side is the side with the writing.
So put that face down and then just go ahead and pop this back into place. It'll kind of snap back in. Make sure that's all around. Put the valet key back in and that's it. That's how you change the battery on the Ford C-Max on the smart key.
Fob battery. And that battery there is a CR 2032. If you didn't see that CR 2032.
How to replace the Ford C-Max Rounded key fob battery 2013, 2014, 2015, 2016, 2017, 2018, 2019
The rounded key fob is actually quite easy to change or replace the battery once you know where the notch in the key can be found to separate the two pieces. Here is my video that shows exactly how to do it quickly:
This is the battery for this CMax rounded key fob:
- IN THE BOX: 4-pack of CR2032 3 volt lithium coin cell batteries; replacement for BR2032, DL2032, and ECR2032
- DEVICE COMPATIBLE: Ideal for watches, calculators, key fobs, Apple TV remotes, and other small electronics
- DESIGNED TO LAST: 8-year leak-free shelf life
GIF Visual Guide
All right, so I'm gonna show you how to change the key Fob battery for Ford C-Max. If you've got this key, not the smart key, but if he looks like this, the key to changing this battery is in the this corner right here. There's a little bit of a notch, if you can see that here. Let me just a little bit. You can see this notch right here.
And what you need to do is get some leverage into that so you can twist it. So I think actually one thing that actually just works really well is taking, like, another key, and in that notch, get it in there, and then just twist. And this will pop these two sides apart, and you'll be able to get access into the battery. Okay. So once you've got that popped out, there's a little backing here that covers the battery part.
Go ahead and set that aside for now. And then you can see you can see access into the CR 2032 battery that you'll need. And that just falls right out once you have this backing off. So grab a new one. Make sure the positive side is facing towards you.
Deposit side has the lettering, place that down, and then go ahead and put this little backing for the kind of a round spot and put that over where the battery is. I'm kind of trying to line that up as best you can because then you'll pop this backing right back on and to press that back together. So again, so the key to this is finding that notch in the right corner here and then getting some leverage, like I said, with another keyword as well. You can also get some leverage into the little hole where you put the keyring too. Once you get that's a good spot to kind of pry in there to separate these two pieces, this can be a little tricky, especially the first time.
So that's how you change the battery. And the Ford C-Max. This is from used from 2013 to presents. And again, that battery is CR 2032 coin battery.