The key fob uses a CR2032 3-volt coin-cell battery.
Battery type and quick characteristics
Common details that help you confirm you have the right battery and know what to expect when replacing it.
- CR2032 coin-cell battery (3V)
- Disc-shaped, about 20 mm in diameter and 3.2 mm thick
- Widely used in Ford remote keys from this era; readily available at auto parts and electronics stores
With a fresh CR2032, you can expect normal remote operation for many months to a couple of years depending on usage.
How to replace the key fob battery
Follow these steps to replace the battery in the 2017 Explorer key fob.
- Release and pull out the mechanical key blade from the fob.
- Use a small flat tool or coin to pry apart the two halves of the fob along the seam, working around the edges.
- Remove the old battery and note which side is facing up.
- Insert a new CR2032 with the positive (+) side facing up and ensure it sits evenly.
- Snap the two halves back together and reinsert the mechanical key blade.
- Test the remote to confirm it’s functioning correctly.
If the remote still doesn’t work after replacing the battery, verify polarity, check for corrosion on contacts, or consider reprogramming or replacing the fob through a dealer.
Tips and notes
Dispose of used CR2032 batteries properly according to local regulations, and avoid exposing the fob to moisture. If your Explorer has a different “smart key” style near the same model year, the battery type is usually the same, but consult the manual for model-specific steps.
Summary
The 2017 Ford Explorer key fob runs on a CR2032 3V coin-cell battery. Replacing it is a quick DIY task: open the fob, insert a new CR2032 (polarity up), reassemble, and test. If problems persist, contact a dealer for possible programming or replacement options. Always recycle old batteries responsibly.