The Immobilizer System - Ducati ST3 Owner's Manual

Backlighting function
Instrument panel backlighting is active only if the parking
light or the low/high beam is on.
In this case the instrument panel automatically turns on or
off the backlighting, thanks to some sensors measuring
light condition and ambient temperature.
Pilot lights brightness function
This function is active only if the parking light or the low/
high beam is on.
Pilot lights brightness is automatically adjusted by the
instrument panel according to the outer light measured.
Auto-off headlight function
This function allows you to reduce current consumption
from the battery, by automatically managing headlight
switching-off.
The device is enabled in two instances:
- First instance - Ignition key is turned from OFF to ON
without starting the engine. After 60 seconds,
headlight is turned off and will be turned back on upon
next key OFF / key ON.
- Second instance - After riding with the headlights on,
engine is stopped using the ENGINE STOP switch (2,
fig. 21). 60 seconds after stopping the engine, the
headlight is turned off and will be turned back on next
time you start the engine.
Note
While starting the engine, the system switches off
the headlight and turns it back on again after engine has
started, or anyway when the button (3, fig. 21) is released.

The immobilizer system

For improved antitheft protection, the motorcycle is
equipped with an IMMOBILIZER, an electronic system
that inhibits engine operation whenever the ignition switch
is turned off.
Accommodated in the handgrip of each ignition key is an
electronic device that modulates an output signal. This
signal is generated by a special antenna incorporated in the
switch when the ignition is turned on and changes every
time. The modulated signal acts as a password and tells
the CPU that an "authorised" ignition key is being used to
start up the engine. When the CPU recognises the signal,
it enables engine start-up.
E
25