Fiat 500L 2018 Owner's Manual page 313

Audio
After pressing the "Audio" button on the touchscreen, the
following settings will be available:
Setting Name
Balance/Fade
NOTE: When in this display you may adjust the Balance and Fade settings.
Equalizer
NOTE: When in this display you may adjust the Bass, Mid and Treble settings.
AUX Volume Offset
NOTE:
The "AUX Volume Offset" feature provides the ability to tune the audio level for portable devices connected through
the AUX input.
Auto Play
NOTE: USB devices will automatically play media when AutoPlay is turned On.
Auto-On Radio
NOTE: The Radio automatically turns on when vehicle is in run or will recall whether it was on or off at last ignition
off.
Speaker Icon
+
On
On
On
Selectable Options
Arrow Buttons
–
Off
Off
Off
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