Audi A8 2019 - Inspection and Maintenance; Service Intervals and Procedures

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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.
If only the standard driver assistance systems are installed
in the vehicle, version A0 is sucient. 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 dierentiate visually between twodierent versions.
Control unit of versions A0 and A
662_172
Control unit of versions B and C
662_173
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 trac 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.