If your remote Ford c max key fob has stopped working, don’t panic. Here is the guide you need. This page shows you the easiest Ford c max key fob battery replacement.
Surprisingly, the small compact Ford C Max has only had two key fobs so far in its short life. Plus, it is an easy battery change, the other requires more work. Both take the small CR2032 battery to replace.
Keep reading this blog to change the battery in your remote Ford key fob with ease.
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 |
How to Replace the Ford C-Max Slim Smart Key Fob Battery (2013-2019)

The slim smart key fob allows for a pretty easy replacement. Keep reading to learn the step-by-step guide for changing your Ford Cmax key fob battery.
What you will need:
-
1x CR2032 battery
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A flat-head screwdriver

How to Change the Battery in a Ford C-Max Slim Smart Key Fob
Total Time: 2 minutes
1. Remove internal key from fob

Turn your key fob to the back. Pull the notch and remove your internal key.
2. Use screwdriver/key to open fob cover

Insert a flathead screwdriver or the key you just removed into the keyhole and twist. The covers of the key fob will pop and you separate it.
3. Remove battery cover, lift out battery

Set aside the cover housing the circuit board and focus on the one with the battery. Use the same flathead screwdriver to lift out the old battery.
4. Insert new CR2032 battery positive side down

Next, insert the new battery with the positive side down and the negative side up.
5. Reassemble Ford key fob parts

The last thing is to fix together the Ford key fob parts in reverse order. Put the internal key back and you’re done!
Lock and unlock your vehicle to confirm that you replaced it well.
Here’s my video on how to replace it:
This is the battery for the Ford C-Max smart key fob:
How to Replace the Ford C-Max Rounded Key Fob Battery (2013 – 2019)

The rounded Ford key fob battery is actually quite easy to change or replace once you know where the notch in the key can be found to separate the two pieces.
This guide will teach you about your Cmax key fob battery replacement DIY.
What you will need:
-
CR2032 battery
-
A flat-head screwdriver
Step 1
Locate the notch at the right corner on the bottom of the remote key fob. This is where you insert your flat head screwdriver to separate the device. When the screwdriver is in, hold the key fob loosely and twist the tool. The cover will pop out.
Step 2
Now, remove the small back covering the battery and set it aside. To get the old battery out, simply turn the cover over and the battery will fall right out. It’s time to change battery.
Step 3
Insert the new battery. Position it so that the positive side faces down and the negative is up.
Step 4
Click the remote key fob covers back together and you’re done. You have a new key fob!
Once you complete the Ford key fob battery replacement process, test your new battery by unlocking and locking your car doors. You can also press any button to see your vehicle response.
Here is my video that shows exactly how to do it quickly:
This is the battery for this CMax rounded key fob:
Frequently Asked Questions
What do I need to change battery in my C max key fob?
To perform a Cmax key fob battery replacement, you only need one small flathead screwdriver and your CR2032 battery.
Do I need to reprogram my Ford key fob after replacing the battery?
In most cases, the answer is no. Replacing a dead key fob battery does not warrant you to reprogram or reset it. Your Ford key fob will adjust itself and work fine after the battery has been replaced.
Bottom Line
Dead remote key fob batteries can be frustrating especially when you need to get to an important place ASAP. Luckily, you have all the guides you need to get your device working again. No more getting stranded! Follow the guides above for a seamless battery change.