The 2010 Honda Accord key fob uses a CR2032 3V lithium coin battery.
Battery type and compatibility
Across most 2010 Accord models, the keyless entry fob relies on a CR2032 battery. This is the standard coin-cell type used in Honda remotes from that era. If you’re in a different market or your fob looks unusual, the exact specification may vary, so check the back of the fob or the owner's manual for confirmation.
Common battery used:
- CR2032 3V lithium coin cell
Tip: If you see corrosion, swelling, or the fob still doesn’t work after replacement, consider having it inspected by a dealer or a locksmith to avoid damage to the electronics.
Replacing the battery
Follow these steps to replace the battery safely and restore fob functionality.
- Gather a replacement CR2032 battery and a small flat-head tool or coin for prying.
- Turn the fob over and locate the seam; insert the tool into the notch and gently pry apart the two halves until they separate.
- Remove the old battery, noting its orientation relative to the contacts.
- Insert the new CR2032 battery with the positive (+) side facing up, aligning it with the contacts.
- Snap the two halves back together until they click securely.
- Test the remote by pressing the lock/unlock buttons to confirm proper operation. If it doesn’t respond, recheck the battery orientation or try again with a fresh battery.
After replacing, handle the fob with clean hands and dispose of the old battery properly per local regulations.
Tips and troubleshooting
Battery life and storage
Most key fob batteries last several years, typically 2–5 years depending on usage and climate. Store spare batteries in a cool, dry place away from moisture or direct heat.
When to seek help
If a fresh CR2032 battery doesn’t restore function, the issue may lie with the fob’s electronics or the car’s receiver. In that case, consult a Honda dealer or a qualified locksmith for diagnosis and possible reprogramming or replacement of the fob.
Summary
In short, a 2010 Honda Accord key fob uses a CR2032 3V lithium coin battery. Replacing it is a straightforward, hands-on task: pry open the fob, swap in a new battery with the correct orientation, reassemble, and test the remote. If problems persist, seek professional assistance.