Honda 2017 Civic Owner's Manual page 145

uuLocking and Unlocking the DoorsuLocking/Unlocking the Doors from the Outside
■
Unlocking the doors and hatch
Press the unlock button.
Once:
u Some exterior lights flash twice, and the driver's door unlocks.
Twice:
u The remaining doors and hatch unlock.
144
1Using the Remote Transmitter
If the distance at which the remote transmitter works
varies, the battery is probably low.
If the LED does not come on when you press a
button, the battery is dead.
2 Replacing the Button Battery P. 575
Models with driver information interface
You can customize the door unlock mode setting.
2 Customized Features P. 123, 324