Honda Civic Hatch 2017 Owner's Manual page 226

uuClimate Control SystemuUsing Automatic Climate Control
■
To rapidly defrost the windows
224
1. Press the button.
2. Press the button.
1To rapidly defrost the windows
After defrosting the windows, switch over to fresh air
mode. If you keep the system in recirculation mode,
the windows may fog up from humidity. This
impedes visibility.