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Notes on retrofitting radios R and CD changers R41 > < Radio systems

A4 Mk2

General notes
General notes
  WARNING
t  Disconnect the battery earth cable before working on the electrical system.
t  On vehicles fitted with telematics system, activate the service mode for the telephone/telematics control unit -J526- before disconnecting battery -A- → Chapter.
When re-connecting battery -A-, always adhere to correct sequence for connecting and disconnecting battery -A- → Electrical System; Rep. Gr.27. Deactivate the service mode for telephone/telematics control unit -J526- → Chapter.
Always use radio devices -R- and fitting components from the Audi range so as to ensure trouble-free installation and optimum reception.
All radio systems -R- are encoded so they recognise the instrument cluster (anti-theft coding). When removing and installing the same radio -R- or instrument cluster and after disconnecting the power supply, it is not necessary to encode the system.
Radio generation II+ is fitted from KW 45/06 onwards.
These radio units employ two tuners with “phase diversity”.
The further design corresponds to that of “symphony”.
If the display shows the message “Transport” after switching on the radio -R-, you must deactivate the transport mode → Vehicle diagnosis, testing and information system VAS 5051.
Fault finding is performed via the “Guided Fault Finding” → Vehicle diagnosis, testing and information system VAS 5051.
Aerial wire repairs → Electrical system; Rep. Gr.97.
CAN bus wire repairs → Electrical system; Rep. Gr.97.
   

Notes on retrofitting radios R and CD changers R41 > < Radio systems