Hella 5RD 007 511-011 Instrucciones De Montaje página 18

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System description
Control unit:
The system consists of a mechanical locking system and an independently functioning electronically encoded immobilizer. The mechanical
system is a starter switch manufactured by Hella (not included). This uses a mechanically coded key to switch terminal 15. When terminal 15
is activated, the key is mechanically locked and cannot be withdrawn.
When activated, the electronically encoded immobilizer disconnects at least three operational control units, such as the starter, the fuel pump
and the ignition. The disconnection is eff ected potential-free via the relays integrated into the control unit.
Electronic key
The electronic key makes use of contact-free transponder technology. The transponder has its own battery-free power supply and is perma-
nently integrated into the mechanical starter switch.
Activating the immobilizer
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The immobilizer is self-activating, i.e. without any no additional switches or extraneous maneuvres. It will generally be active whenever the
mechanical key is in position '0' of the start switch (terminal 15 is off ). If the key of the start switch is turned from some other position to posi-
tion '0', the immobilizer will be activated automatically a er a period of 5 seconds. The immobilizer is also activated, and remains activated,
if the key is le in position '0'.
The immobilizer activates by disconnecting at least three operational control units, such as the starter, the ignition and the fuel pump.
Deactivating the immobilizer
The immobilizer is deactivated when a valid mechanical key and a valid electronic key (transponder) are both present. The transponder is not
addressed until the mechanical key in the start switch has switched on terminal 15. This means that is necessary to fi rst open the mechanical
locking system before the electronic key is checked. This means that it is not possible to tamper with the immobilizer while the ignition is
turned off .
The immobilizer is deactivated by connecting at least three operational control units, such as the starter, the ignition or the fuel pump.