The majority of modern Honda key fobs use a CR2032 3-volt lithium coin cell, though some older or model-specific remotes may use CR2025 or CR1616. Verify the exact size for your car by inspecting the fob or consulting the owner's manual. This article explains how to identify the right size and how to replace the battery.
Common battery types by model and year
Here are the battery sizes you’re most likely to encounter across popular Honda vehicles. Keep in mind that there can be variations by year and trim, so when in doubt, check the fob itself or the manual.
- Most modern Honda key fobs (Civic, Accord, CR-V, HR-V, Pilot, Fit, and similar recent models) use CR2032 3V batteries.
- Some older or less common remotes may use CR2025 3V batteries.
- In a few cases, CR1616 3V batteries can appear in certain model-year remotes or regional variants.
While CR2032 is the standard for recent Hondas, always confirm the exact size by checking the battery you remove or the documentation for your specific vehicle.
Identify the battery for your fob
Inspect the fob and confirm the size inside
To be sure, open the fob and examine the battery you remove. The size (CR2032, CR2025, CR1616, etc.) is usually printed on the battery itself. If the label isn’t visible, compare the battery’s diameter and thickness to the common sizes listed above. If you can’t access the battery safely, consult your owner’s manual or contact Honda support for guidance specific to your model and year.
Replacing the battery
Before you replace the battery, make sure you have the correct type for your fob. The following steps cover the general procedure used for most Honda remotes.
- Gather the correct replacement battery (CR2032, CR2025, or CR1616, depending on your fob).
- Use a small flat-head screwdriver or a coin to gently pry apart the two halves of the fob along the seam.
- Remove the old battery, noting its orientation (which side is facing up or down).
- Insert the new battery in the same orientation as the old one, ensuring it sits flat and secure.
- Snap the fob halves back together and test the remote by pressing a button near your vehicle to confirm it’s functioning.
In most cases, you won’t need to reprogram or re-pair the fob after a battery replacement. If you notice the fob isn’t responding, refer to the owner’s manual for any model-specific re-pairing steps.
Tips, safety and disposal
Handle batteries with clean hands and avoid touching the battery contacts. Dispose of used lithium coin cells at a proper recycling location. If you’re unsure about the correct battery type for your exact car, a quick check with your local Honda dealer or the vehicle’s manual will prevent mistakes.
Summary
Most Honda key fobs use CR2032 batteries, but some models and years may use CR2025 or CR1616. Verify by inspecting the removed battery or consulting the owner’s manual. Replacing is generally straightforward and does not require reprogramming, though you should recheck the fob’s functionality after the replacement and follow model-specific guidance if problems arise.