The warning and indicator lamps light up or flash in the instrument cluster to indicate functions or faults.

Some of the warning and indicator lamps may be accompanied by a driver message. The warning display will be accompanied by the corresponding warning chime. The messages disappear again after a short time. To display a message again, press the SET button Link. If several malfunctions occur, each of the indicator/warning lamps will be displayed in succession for about two seconds at a time.

Depending on the Audi A4 equipment, some of the warning and indicator lamps may be displayed in different colours.