The Immobilizer System; Keys - Ducati MONSTER S4R S Use And Maintenance Manual

The immobilizer system

For additional anti-theft protection, the motorcycle is
equipped with an IMMOBILIZER, an electronic system
that locks the engine automatically whenever the ignition
switch is turned off.
The handgrip of each ignition key contains an electronic
device that modulates the output signal from a special
antenna in the switch when the ignition is switched On.
E
The modulated signal represents the "password" (which
is changed at each start-up) by which the ECU recognizes
the ignition key. The ECU will only allow the engine to start
if it recognises this password.

Keys

(fig. 7)
The owner receives a set of keys, comprising:
- 1 key A (RED)
The red key is a service tool and is part of the motorcycle's
immobilizer system.
It contains the code of the immobilizer system and should
not be used for normal everyday use of your motorcycle.
Your dealer may ask you to produce the red key in order to
carry out certain service operations. For security reasons,
the red key cannot be replaced. In cases where the red
key is required for servicing purposes and the owner is
unable to produce it, it will be necessary to renew the
motorcycle's electronic control unit, instrument panel
and ignition switch assembly, and the cost of these
operations will be met by the owner. It is therefore
important to keep the red key in a safe place.
- 2 keys B (BLACK)
16
Warning
The red key (A) has a rubber sleeve to keep it in
perfect condition and to prevent contact with other keys.
Never remove this protection unless absolutely necessary.
The B keys are the keys for normal use, and are used to:
- start the engine
- open the lock on the fuel tank filler cap
- open the seat lock.
The A key performs all the same functions as the B keys
and it can also be used to reset and re-program other black
keys if necessary.
B
A
1
fig. 7