Ducati ST3 Owner's Manual page 133

Special selection function: vehicle model and unit of
measurement (fig. 14)
The engine control unit transmits the correct vehicle
model and unit measurement information automatically
for the instrument panel to display; to force a change of
these parameters, turn the key from OFF to ON while
holding down buttons (A, fig. 5.1) and (B, fig. 5.1). Vehicle
model and version will start to flash on the display. Press
button (B) to display in sequence all possible settings. To
E
store your selection, hold down the button (A) for at least
5 seconds, until the display will read OFF and then turn the
key to OFF.
Note
When this function is activated, vehicle ignition is
inhibited.
fig. 14
24