Ducati ST3 Owner's Manual page 132

Press button (A, fig. 5.1) to lower the beam, press button Note
(B, fig. 5.1) to raise the beam.
When this function is activated, vehicle ignition is
On the left side of the number, on the display, are the fixed
inhibited.
"guide lines" that indicate whether the actual beam
position is higher or lower than the "0" position (they flash
while beam is being raised/lowered and signals if it is
moving up or down).
Turn the key to OFF to exit the function.
Every time you quit the function, the selected beam
setting is stored. E
fig. 13.2
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