Immobilizer Iv - Volkswagen Passat 2006 Service Training

Onboard Power Supply

Immobilizer IV

What does the immobilizer IV
comprise?
The immobilizer IV is not a separate control unit,
but a function.
It includes:
Storage of all theft-related features of the
control units in the FAZIT central database in
Wolfsburg.
Communication of the convenience system
central control unit, in which the immobilizer is
integrated, with the other components
involved.
Encryption of the data communication
between the individual control units.
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Central FAZIT database
The central FAZIT database at Volkswagen in
Wolfsburg is a essential component of the
immobilizer IV.
FAZIT stands for "Fahrzeugauskunft- und
zentrales Identifikations-Tool" (Vehicle
Information and Central Identification Tool). All
theft-related data from the control units that are
integrated in the "Immobilizer" function are
stored in this database.
It is not possible to adapt the control units used
without an online connection to FAZIT.
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