Ducati DIAVEL Owner's Manual page 185

Press (2, Fig. 133) for at least 3 seconds: the
indication of the activated function (Fig. 134) will
appear on the display of the instrument panel on tank
for 5 seconds and the lights will remain on for 2 hours.
After this period of time, they will turn off
automatically.
Note
If there is a sudden interruption in the battery
voltage during the "Parking" function, the instrument
panel will disable this function when the voltage is
restored.
Important
The frequent use of this function can
considerably reduce the battery charge; it is
recommended to use this function only when really
necessary.
184
2
PARKING
Fig. 133
Fig. 134