The 2017 Honda Accord key fob uses a CR2032 3-volt lithium coin-cell battery.
This is the standard replacement battery for most Accord key fobs from that era. The guide below helps you confirm the battery type, replace it safely, and troubleshoot if the fob still won’t work.
Battery type and compatibility
The standard battery for the 2017 Accord key fob is a CR2032 3V lithium coin cell. This compact battery is widely available at electronics and automotive stores. If your fob behaves oddly after replacement, double-check the battery orientation and ensure you’re using the correct size.
Commonly used: CR2032 for the 2017 Accord key fob. While rare regional variants can exist, CR2032 is the reliable default for this model year.
- CR2032 — 3V lithium coin cell (standard for the 2017 Honda Accord key fob)
Having the correct battery on hand makes replacement straightforward and reduces the risk of damage to the fob during the process.
Replacing the battery
Follow these steps to replace the battery in a 2017 Honda Accord key fob. Make sure you handle the fob carefully to avoid damaging the electronics.
- Remove the mechanical key: Press the release and slide the metal key out of the fob to access the seam.
- Open the fob case: Use a small flat-head screwdriver or a similar tool to gently pry the two halves apart along the seam.
- Remove the old battery: Take out the existing CR2032 from its holder, noting the orientation.
- Insert the new battery: Place a fresh CR2032 with the positive (+) side facing up toward the top of the fob.
- Reassemble: Snap the two halves back together and reinsert the mechanical key.
- Test the fob: Press a button to confirm that the remote operates correctly.
Note: If the fob still doesn’t respond after replacing the battery, the issue may be with the fob’s programming or the vehicle’s receiver, and a dealer or locksmith may need to reprogram the key.
Additional tips
Keep spare CR2032 batteries on hand for quick replacements in the future. Store batteries at room temperature and avoid touching the battery surfaces with bare fingers, as oils can affect performance.
Summary
The 2017 Honda Accord key fob uses a CR2032 3V lithium coin-cell battery. Replacing it involves removing the mechanical key, opening the fob, swapping in a new CR2032 with the correct polarity, and reassembling. If replacement does not restore function, programming or receiver issues may be at fault, and professional service may be required. Always ensure you use the correct battery type and orientation for reliable operation.