Found
Music Box Delete for Infiniti but it might work for your ride.
Music Box settings:
To set the Music box hard drive to your
preferred settings, select the “Menu” key
during playback, and the “Music Box
Settings” key with the INFINITI controller,
and then push the ENTER button.
Music Box Used/Free Space:
Information about “Saved Album”, “Saved
Track” and “Remaining Time” is displayed.
Automatic Recording:
When this item is turned to ON, the Music
Box hard drive automatically starts recording
when a CD is inserted.
Delete Songs from Music Box:
Deletes the current song, selected songs or
albums by choosing from the list, or all
songs/albums in the Music Box.