Audi A5 - Convenience System Central Control Unit

21
Convenience system central control unit
Designation Definition
"old" convenience system control
unit
Convenience system central control unit in models A4 (B7), A6 (C6),
Q7 and A8 (D3)
"new" convenience system control
unit
Convenience system central control unit in the new Audi A5 (B8) and
the other models belonging to the B8 family
The convenience system central control unit J393 of
the Audi A5 has undergone the most modification of
the convenience electronics control units.
Beginning with the Audi A5, the "new" convenience
system control unit J393 includes all the functions of
the following (previously discrete) control units:
• "old" convenience system control unit J393
• Entry and start authorisation control unit J518
• Aerial reader unit for entry authorisation for key-
less entry system J723
New features
393_003b
Convenience system central control unit
J393
Convenience system
central
control unit
J393
Diagnostic address:
46
Entry and start
authorisation control
unit
J518
Diagnostic address:
05
Aerial reader
unit for
entry authorisation
for keyless
entry system
J723
Diagnostic address:
05
To aid understanding of the self-study programme, the following two terms will be used hereafter:
Convenience system central control unit
393_003a