The key fob for the 2013 Honda Civic uses a CR2032 3-volt lithium coin battery.
This article explains the battery size, how to confirm yours, and provides step-by-step replacement instructions to keep your remote functioning properly.
Battery type and size
For the 2013 Civic, the remote keyless entry fob commonly uses a CR2032 battery. This 3-volt coin cell is widely used in many car remotes of that era. If your fob is not standard or if you are unsure, remove the back cover and inspect the battery, which often has its size printed on the metal can. Your owner's manual or a dealer can confirm the exact size for your trim and region.
How to confirm your key battery size
To verify the exact battery in your fob, check the battery itself for printed size, consult your owner's manual, or ask a dealership or automotive parts retailer. If you still have the original packaging, it may indicate the correct type as well.
When replacing the battery, follow these steps to access the fob internals and install a fresh cell.
- Remove the emergency key blade: If your fob has a hidden mechanical key, slide the release and pull out the blade.
- Open the fob case: Use a small flat tool or a coin to gently pry apart the two halves at the seam. Do not force; go slowly around the edge.
- Inspect the battery and note orientation: Look at how the old battery sits (which side is up). Use a non-metallic tool if needed to avoid short circuits.
- Insert a new CR2032 battery: Align the plus (+) side facing up and press it into place.
- Reassemble the fob: Snap the two halves back together and reinsert the emergency key blade.
- Test the fob: Press a button to confirm the lock/unlock and, if equipped, the remote start or trunk release functions work correctly.
Dispose of the old battery properly at a recycling center and consider replacing both fobs at once if you have a spare. If the fob still doesn’t work after replacement, the issue may be a programming problem or a dead receiver, and you should contact a Honda dealer or qualified locksmith.
Summary
In summary, the 2013 Honda Civic key fob generally takes a CR2032 3V lithium coin battery. Replacement is straightforward with the standard steps outlined above. When in doubt, consult the owner's manual or a dealer for confirmation and assistance.