Acura 2009 TL Owner's Manual page 330

Playing Hard Disc Drive (HDD) Audio (Models with navigation system)
Turn the interface dial to select the
track random icon, and press
ENTER on the interface selector.
To turn this feature off, turn the
interface dial to select the OFF icon,
then press ENTER on the interface
selector.
324
Scan Playback
SCAN OFF ICON
SCAN ICON
This function samples all the tracks
on the HDD in the order that they
were recorded.
To activate scan, push the interface
selector down during track playback.
Turn the interface dial to select Scan
on the HDD AUDIO MENU, and
press ENTER on the interface
selector.
Turn the interface dial to select the
scan icon. Press ENTER on the
interface selector. You will hear a 10-
second sampling of each track on the
HDD.
To turn this feature off, turn the
interface dial to select the OFF icon.
Press ENTER on the interface
selector to play the last track
sampled.