The 2013 Ford Fusion key fob typically uses a CR2032 lithium coin battery.
In most markets, the standard three- or four-button remote that unlocks doors and activates the panic alarm uses a CR2032 coin cell. Some variants or aftermarket remotes might use different sizes, but CR2032 is the common spec for Ford’s 2013 Fusion keys.
Battery types and compatibility
Here are the battery sizes you are most likely to encounter in a 2013 Ford Fusion key fob and how they relate to fit and performance.
- CR2032 – 3-volt lithium coin cell, standard for most 2013 Fusion remotes; diameter about 20 mm, thickness 3.2 mm.
- CR2025 – 3-volt lithium coin cell, thinner (2.5 mm) and used in some compact remotes; may not fit every Fusion fob.
- CR2016 – 3-volt lithium coin cell, thinner still; rarely used in Ford remotes but some regional variants may employ it.
In practice, CR2032 is the standard choice for the 2013 Fusion key fob, and it's widely available at electronics and automotive stores. If your fob has a different size, verify compatibility before replacing.
How to replace the battery
Follow these steps to replace the battery in your Fusion key fob.
- Flip the fob and locate the seam; use the small slot or a flat-head screwdriver to pry the two halves apart gently.
- Remove the old battery and dispose of it properly.
- Insert a new CR2032 battery with the plus (+) side facing up, unless your fob shows a different orientation.
- Press the halves back together until they click securely.
- Test the remote by pressing a button from a short distance to ensure it’s working.
If the fob still doesn’t work after replacement, check the battery orientation, inspect for corrosion, or have the key inspected or reprogrammed by a dealer or locksmith.
Summary
For most 2013 Ford Fusion key fobs, the battery you’ll need is a CR2032 lithium coin cell. While CR2025 or CR2016 can appear in some regional or aftermarket keys, CR2032 is the standard and most widely compatible choice. Replacing the battery is a straightforward, at-home task, but if problems persist, seek professional assistance to rule out programming or worn circuitry.