41
On vehicles with the optional "Advanced Key", the writing of data to the "Audi Service Key" is implemented
as follows:
393_012
Convenience
control unit
J393
Data bus
diagnostic
interface
J533
Dash panel
insert
J285
Extended-CAN
Convenience CAN bus
Powertrain CAN bus
Dash panel insert/
suspension CAN bus
R137
R138
R137 ... Luggage compartment aerial for entry and start authorisation
R138 ... Centre console aerial for entry and start authorisation
The difference between vehicles without and with-
out "Advanced Key" lies in the way the convenience
system control unit transfers data to the key. The
two keyless aerials R137 and R138 are used instead
of the coil in the ignition lock for writing data to the
ignition key.
Both aerials are located in the centre console and in
the luggage compartment. Depending on the actual
position of the ignition key on the vehicle, one of the
two aerials is used. In some cases, data is trans-
ferred redundantly by both aerials.
To Next Page
Loading...
