Ducati Streetfighter Owner's Manual page 22

"TRIP" meter
This function shows the distance travelled since the Trip
meter was last reset.
Holding button (14, fig. 6) pressed for 3 seconds when this
function is displayed resets the trip meter.
When the reading exceeds 999.9, distance travelled is reset
and the meter automatically starts counting from 0 again.
EU, CND, FRA, JAP versions
UK, USA versions
E
fig. 15
21