Press the (sound) button,
and rotate
to scroll through the following choices:
Rotate to adjust the sound
setting, then
press
.
Adjusting the Sound
The SVC has four modes: Off, Low, Mid, and High.
SVC adjusts the volume level based on the vehicle speed. As you go faster, audio volume increases. As you slow down, audio volume decreases.
Honda Civic Service Manual. Rear License Trim Removal and Installation ('13-'14)
1.
Trunk Lid Trim Panel
1.
For some models: Remove the trunk lid
...