The Ford Flex reminds me of my old Scion xB, but on steroids. The large box of an SUV has massive room and visibility, and thankfully, some pretty easy key fob batteries to change! The Flex has had just two key models in it’s first decade of life, and both take the small CR 2032 battery. If you have another Ford car, check out our Ford Fob Batteries guide.
| Model | Trims | Generation | Years | Key Fob Type | SubType | Rechargeable? Ease of change | Battery | Buy |
|---|---|---|---|---|---|---|---|---|
| Flex | SE, SEL, Limited, Sport Appearance Package | 2nd | 2013, 2014, 2015, 2016, 2017, 2018, 2019 |  Slim Smart Remote Key | Smart Key | No | CR2032 | Check on Amazon |
| Flex | SE, SEL, Limited, Sport Appearance Package | 1st & 2nd | 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 |  Rounded Key | CR2032 | Check on Amazon |
How to replace the Ford Flex 2013 – 2019 slim key fob battery
This is the battery for this Ford Flex slim key fob remote:
Buy CR 2032 Replacement Battery on Amazon
How to replace the Ford Flex 2019 – 2019 remote key fob battery
This combo key/remote is not a “smart” key, but does contain the same internal CR2032 battery as the other Ford Flex fob. This one will need to be pulled apart into two pieces to access the internal battery to replace. My video shows you exactly how to do that:
This is the battery for this Ford Flex remote key fob: