what does this dash display mean (o) thers a beep followed,,i have no manual on 1999 Audi A6 Quattro

i have no manual and do not know what this display means..(O)

Asked by for the 1999 Audi A6 Quattro
That means your car needs new break pads.
1 more answer
brakes need to be replaced or your sensor got disconected on your brake pad