The key fob for a 2015 Honda Accord uses a CR2032 3-volt lithium coin cell.
That small battery powers the fob’s remote functions and is standard across many Honda models from the same era. Replacing it is a quick DIY task you can do at home with a fresh coin cell.
Battery type and compatibility
The CR2032 is a widely used coin cell and is compatible with the majority of Honda key fobs issued around 2014–2016, including the Accord. When installing, ensure the correct orientation: the plus (+) side faces up, as indicated by the battery contacts on the fob. If the fob won’t operate after replacement, verify the battery is seated properly and the contacts are clean.
How to replace the battery
Tools and preparation
Gather a fresh CR2032 battery, a small flat tool or a clean coin, and a comfortable workspace.
Below are the steps to replace the battery in the 2015 Honda Accord key fob:
- Remove the mechanical key blade: Slide the release on the back of the fob and pull out the metal key.
- Open the fob: Use a coin, flat-head screwdriver, or a plastic pry tool to gently separate the two halves along the seam. Work slowly to avoid damaging the case.
- Replace the battery: Note the orientation of the old battery, then insert a new CR2032 with the positive side facing upward.
- Reassemble and test: Snap the halves back together, reinsert the mechanical key, and press the remote buttons to confirm operation.
With the battery replaced, your fob should regain range and reliability. If not, you may need to re-sync the fob or have the remote serviced.
Summary
Bottom line: The correct battery for a 2015 Honda Accord key fob is a CR2032 3V lithium coin cell. The replacement process is straightforward and can be done at home with minimal tools. Always dispose of the old battery properly and verify button function after replacement.