The Honda CR-V key fob most commonly uses a CR2032 3V coin-cell battery. Some older or regional fobs may use CR2025 or A23, so it’s best to check the battery itself or consult your owner’s manual to be certain.
Battery sizes commonly used in CR-V key fobs
Knowing the typical sizes helps you buy the right replacement without trial and error. Here are the sizes you’re likely to encounter.
- CR2032 — The standard 3V coin-cell used by most current CR-V fobs.
- CR2025 — A thinner coin-cell that appears in some older or regional remotes.
- A23 — A rarer size found in a few older or non-U.S. variants; not common for recent CR-V models.
If your fob battery doesn’t fit CR2032, compare the dimensions against these sizes and refer to the owner’s manual or your dealer for the exact specification.
How to replace the key fob battery
Replacing the CR-V key fob battery is a quick routine task. Follow these steps to swap in a fresh power source and restore remote functionality.
- Choose a fresh battery of the correct size (CR2032 is recommended for most CR-V fobs). If your manual specifies a different size, use that one.
- Remove the key fob’s back cover by gently prying along the seam with a small flat tool or coin. Be careful not to damage the plastic case.
- Carefully lift out the old battery, noting the orientation (which side is facing up).
- Insert the new battery with the correct polarity (plus side facing up in most CR-V fobs).
- Snap the back cover back on and press the buttons to confirm the remote is working. If it doesn’t, reseat the battery or try a fresh CR2032 if you had been using another size.
If the fob still doesn’t respond after replacing the battery, the issue may lie with the fob’s electronics or the vehicle’s receiver. Consider visiting a Honda dealer or a qualified locksmith for a diagnostic check.
Tips for maintenance and safety
Always dispose of old batteries properly and avoid touching the battery terminals with bare metal objects. Store spare batteries in a cool, dry place and avoid exposing the fob to extreme temperatures or moisture.
Where to buy replacement batteries
Replacement CR2032 batteries are widely available at automotive stores, big-box retailers, hardware stores, and online. Bring the battery size or the old battery to ensure you pick the correct option.
Summary
For most Honda CR-V owners, the key fob uses a CR2032 3V battery, with CR2025 or A23 as possible alternatives for older or regional variants. Replacing the battery is a quick, straightforward task that restores remote function in just a few minutes. When in doubt, check the fob or the owner's manual to confirm the exact size before purchasing a replacement.