Audi A8 2019 Service Training page 98

Driver Assistance Systems Control Module J1121
Introduction
J1121 is a new control module which is being used for the
first time by Audi in the 2019 A8. The versions have the
following designations:
› Version A0 (basic version).
› Version A.
› Version B.
› Version C (version with widest range of functions).
Which versions are required in a specific A8 depends on
which driver assistance systems are ordered.
Control unit of versions A0 and A
Driver Assistance Systems Control Module J1121 is the master control unit for the following driver assistance systems:
› Basic version of high beam assist.
› Matrix LED high beam assist. (Not available at vehicle launch.)
› Intersection assist.
› Surround view cameras.
› Parking system plus (in version C only, otherwise Vehicle Electrical System Control Module J519).
› Active lane departure warning.
› Emergency assist.
› Camera-based traffic sign recognition.
Reference
For further information about the Driver Assistance Systems Control Module J1121, refer to eSelf-Study
Program 990393, The 2019 A8 Driver Assistance Systems.
94
If only the standard driver assistance systems are installed
in the vehicle, version A0 is sufficient. If, for example, the
optional surround view cameras are ordered, it requires the
installation of version C. The optional surround view
cameras are currently the only option which necessitates
the installation of version C. Version C will in future also be
required by other park assistance systems in the 2019 A8,
but these systems will not be introduced until a later date.
The individual versions are based on each other. The higher
the version number, the more hardware and software are
integrated in the control module. However, an external
analysis of the control module shows that it is only possible
to differentiate visually between two different versions.
Control unit of versions B and C
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