Got a '55 plate A8 3.0TDI. The radio/CD volume seems to be eratic. Sometimes you turn the car on and the radio comes on full tilt, then backs off, sometimes as you turn the volume up or down it just pulses up/down randomly! Using the on/off radio button on the centre console you can't always even turn the radio off when turned fully anti-clockwise.
Oh, and sometimes the thing just works normally!! Help......