Ducati MONSTER S4, Owner'S Manual

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The immobilizer system
For improved anti-theft 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.
Keys (fig. 4.1)
The Owner receives a set of keys comprising:
- 1 RED key A
- 2 BLACK keys B
The keys B are regular ignition keys and are used to:
- start up the engine
- open the lock of the fuel tank filler plug
- open the seat lock.
The key A performs the same functions as the keys B,
and is also used to wipe off and re-program other black
keys, if needed.
12
E
Note
The three keys have a small plate (1) attached that
reports their identification number.
Important
Keep the keys in different places. Store the plate (1)
and the key A in a safe place.
1
B
A
fig. 4.1
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