FORD 2015 F-550 v.2 - Manual (Page 316)

Track/Folder is only available on MP3 files when in CD mode. In track mode,
pressing the SEEK arrows allows you to scroll through all the tracks on the disc.
In folder mode, pressing the SEEK arrows allows you to scroll through all the
tracks within the selected folder. Press the FOLDER buttons to access other
folders.
COMPRESS (Compression) is only available in CD and MP3 modes. Switching
compression on brings the soft and loud passages together for a more consistent
listening level. Use the SEEK buttons and up and down arrow buttons to switch
it on and off.
AUX: Press to access the media features of the SYNC system. See SYNC™
(page 322). F
SEEK: In radio mode, press and release these buttons to go to the next (or
previous) preset radio station or disc track. In CD and MP3 modes, press these
buttons to select the next (or previous) track, or press and hold to advance (or
reverse) within the same track. G
Play, Pause and OK: Play and Pause allow you to play or pause a track when
listening to a CD. OK allows you to confirm commands with phone and media
features of the SYNC system. See SYNC™ (page 322). H
SHUFFLE: Play music on the selected CD or MP3 folder in random order. I
FOLDER >: Press to access the next folder on an MP3 disc. J
< FOLDER: Press to access the previous folder on an MP3 disc. K
FF: Press to fast forward in a CD track or MP3 file manually. L
REW: Press to rewind in a CD track or MP3 file manually. M
Memory presets: Store your favorite radio stations. To store a radio station,
tune to the station, then press and hold a preset button until sound returns. N
TEXT/SCAN: In radio, CD and MP3 modes, press and hold to hear a brief
sampling of radio stations, CD tracks or MP3 files. In CD and MP3 modes, press
and release to display track title, artist name and disc title. In text mode,
sometimes the display requires additional text to show. When the < / > indicator
is on, press TEXT and then use the SEEK buttons to view the additional display
text. O
AM/FM: Press to select a frequency band. P
VOL-PUSH: Press to switch the system off and on. Turn it to adjust the volume. Q
CD: Press to enter CD or MP3 mode. R
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Audio System