Ducati Monster 400 Owner's Manual page 14

Oil temperature
When the oil temperature goes below 50 °C (122 °F), "LO" will
E
be displayed. "HI" will be displayed when the temperature
exceeds 170 °C (338 °F).
Fuel light
"FUEL" will be displayed (2, fig. 6) when the fuel warning light
comes on and the trip fuel function activates so that the
display (1, fig. 6) shows mileage covered in reserve preceded
by letter "F" (FUEL).
Maintenance indicator
"MAInt" will be displayed (1, fig. 6) will be displayed for 5
seconds when turning the key to ON. It reminds you of the
routine maintenance servicing to be done. When "MAInt" is
displayed, contact an authorised dealer or service centre.
Backlighting function
Turn the key to ON and press (B, fig. 6) within 5 seconds to
change instrument panel lighting power.
Warning
Stop the motorcycle before using the instrument panel
controls. Never operate the instrument panel controls while
riding.
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