Honda Accord 2013 Owner's Manual page 537

Main Menu
uuRemote Transmitter CareuReplacing the Button Battery
■
Smart Entry Remote
Battery
* Not available on all models
536
Table of Contents
*
Battery type: CR2032
1. Remove the built-in key.
2. Remove the upper half by carefully prying
on the edge with a coin.
Remove carefully to avoid losing the
u
buttons.
u Wrap a coin with a cloth to prevent
scratching the smart entry remote.
3. Make sure to replace the battery with the
correct polarity.