A6 Quattro Sedan V6-3.2L (BKH) (2005)
Steering Mounted Controls Assembly: Description and Operation
Multifunction Steering Wheel
Buttons are integrated in the steering wheel for easier operation of Infotainment, telephone and the navigation system. With Tiptronic, rocker switches
are also installed on right and left sides.
The Multi-function Steering Wheel Control Module (J453) (under right button) reads out the button information and transmits it to the Steering
Column Electronic Systems Control Module (J527) via the LIN bus (single wire Bus). Information from the Steering Column Electronic Systems
Control Module (J527) is transferred via CAN-Bus (Comfort) and Data Bus On Board Diagnostic Interface (J533) to the individual modules.
Diagnosis is performed using "Guided Fault-Finding".