Audio preparation (since 2003 model year) (Audi A4 B7)

28-1 Fuses, internal speaker
*for models with telephone/communication systems
**See telephone/communication systems diagram
*** see telephone/communication systems diagram, excluded since 2006 issue.

28-2 Front speaker

28-3 Rear speaker, antenna
* antenna for Sedan models antenna
**for Station wagon models
***for models with additional heater