How to Replace the Key Fob Battery in a Honda Accord Coupe

1. Remove the built-in key from the smart entry remote.
2. Pry along the edge of the upper half of the cover carefully with a coin to remove it.
3. Take care not to lose the buttons when removing the cover.
4. Take out the old battery and install the new CR2032 battery with the correct polarity.

• Battery type: CR2032.
• Wrap the coin with a cloth to prevent scratching the smart entry remote.

Source: 2017 Honda Accord Coupe owner's manual, PDF page 550. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.