The 2017 Honda Accord key fob uses a CR2032 3-volt lithium coin battery. This is the standard battery size for most Honda remotes from that era, and it’s easy to replace at most auto parts stores or online retailers.
Battery type and compatibility
The key fob for the 2017 Accord is designed around a CR2032 battery. This coin cell is 20 mm in diameter and about 3.2 mm thick, providing a reliable power source for the remote’s functions. Using a different size can prevent the battery from seating properly or may prevent the fob from closing correctly, so stay with the CR2032 3V type for a proper fit.
Here are the key details you should know before purchasing or replacing the battery.
- Battery type: CR2032, 3V lithium coin cell
- Dimensions: approximately 20 mm diameter and 3.2 mm thickness
- Orientation: positive (+) side usually faces up when installed
- Life expectancy: typically 1–3 years depending on usage and climate
- Availability: widely sold at auto parts stores, pharmacies, supermarkets, and online
With these details in mind, you can confidently select and install the correct battery for your key fob.
Replacing the battery in a 2017 Honda Accord key fob
Replacement is a straightforward task, but it requires care to avoid damaging the fob’s electronics. Follow these steps to swap in a fresh CR2032 battery.
- Flip the fob over and locate the seam on the back cover. Some models have a small slot for prying.
- Gently pry open the back cover with a small coin or flat-head screwdriver. Do this on a soft surface to prevent scratches.
- Remove the old battery and note its orientation (positive side facing up in most assemblies).
- Insert the new CR2032 battery with the positive side facing up and ensure it sits flat in the compartment.
- Reattach the back cover until it clicks securely into place. Test the fob to confirm all buttons (lock, unlock, trunk, remote start if equipped) work as expected.
If the fob still doesn’t work after a battery replacement, the issue may lie with programming, a damaged fob circuit, or the receiver in the car, and you may need dealer or locksmith assistance.
Alternative considerations and tips
To ensure reliable performance, keep spare CR2032 batteries on hand and replace them when you notice reduced range or delayed response. Handle the fob gently during replacement to avoid damaging the internal circuit board. Some Accord key fobs also include a mechanical key blade for manual entry; battery replacement does not affect the mechanical key’s usefulness.
Summary
For a 2017 Honda Accord, the key fob runs on a CR2032 3V lithium coin cell. Replacement is simple and inexpensive: select a fresh CR2032, install it with the correct polarity, and reassemble the fob. If functionality doesn’t return after replacement, seek professional help for potential programming or hardware issues.