Fiat 500X Owner's Handbook Manual page 187

Button
Shuffle of USB/iPod tracks
USB/iPod loop
Steering wheel controls
The controls for the main system functions are present on the steering wheel to make control easier.
The activation of the function selected is controlled, in some cases, by how long the button is pressed (short or long press) as
described in the table below.
151
Functions
.
Mode
Brief button press
Brief button press
F1B0208C
185