The turn signals can be used when the ignition
switch is in ON *1.
One-touch turn signal
When you lightly push up or down and release the turn signal lever, the exterior turn signals and turn signal indicator blink three times.
This feature can be used when signaling for a lane change.
Honda Civic Service Manual. Audio-Navigation Unit Removal and Installation ('13)
1.
Dashboard Center Pocket
1.
Remove the screws (A).
2.
Remove the dashboard center pocket (A).
...