The key fob battery for a 2010 Honda Civic is most commonly a CR2032 3-volt coin cell. This is the standard size used in the majority of Civics from that era.
Because Honda offered a few different remote designs over the years, there can be variations. To be certain, inspect the fob’s current battery, consult the owner's manual, or contact a dealer if you’re unsure before purchasing a replacement.
How to confirm the exact battery size for your fob
Use these checks to verify the correct size before buying a replacement.
- CR2032 3V coin-cell battery is the typical size for most 2010 Civic key fobs.
- Some fob variants or third-party replacements may use a different size; if in doubt, open the fob to read the current battery size or refer to the owner's manual or dealer for confirmation.
Bottom line: CR2032 is the standard for the 2010 Civic key fob. If your fob looks notably thinner or thicker than usual, or you’re unsure, double-check with the manual or a dealer before purchasing.
Replacing the battery in a 2010 Civic key fob
Follow these steps to replace the battery safely and restore remote function.
- Remove the mechanical key blade from the fob if your model includes one, using the release latch.
- Use a small flat tool or a coin to gently pry apart the two halves of the fob.
- Take note of the battery orientation (positive side facing up) and remove the old battery.
- Insert a new CR2032 battery with the correct polarity, ensuring it sits flush.
- Snap the fob halves back together and reinsert the mechanical key blade (if used).
- Test the remote from a short distance to confirm proper operation (lock/unlock/panic as applicable).
If the key fob still doesn’t work after replacing the battery, recheck the battery seating, try a fresh replacement, or consult a dealer for potential programming or damage checks.
Additional considerations
Most 2010 Honda Civic key fobs do not require reprogramming after a battery replacement, but if your vehicle has a newer or aftermarket fob, or if the remote isn’t recognized, you may need dealer assistance to reprogram the key or verify compatibility.
Summary
For a 2010 Honda Civic, the standard key fob battery is a CR2032 3V coin cell. Confirm the exact size by inspecting your fob or consulting the manual if you’re unsure. Replacing the battery is a quick DIY task: open the fob, swap in a new CR2032 with proper polarity, reassemble, and test. If problems persist, seek professional help.
What size battery do I need for a Honda Civic key fob?
And we can remove the key. Next we want to take this wide part of your physical key and you can kind of wedge it inside this opening. And then gently twist. And your key fob will come apart.
What battery does a 2010 key fob take?
| 2005-2010 | CR1616 |
|---|---|
| 2010-2015 (FOB) | CR2032 |
| 2014-2015 | CR2032 |
| 2010-2013 | CR2032 |
| 2006-2010 | CR2032 |
What size battery does a 2010 Honda Civic use?
Group 51R size
What size battery is in the 2010 Honda Civic? Many 2010 Honda Civic vehicles use Group 51R size batteries; CCA (cold cranking amps) typically ranges in the 380–450 CCA area depending on the supplier.
What battery does a 2010 Honda Civic key take?
Car Key Battery for Honda Civic (2006-2013 Civic Remote Batteries CR1616 3V Pack of 2)