Audi A6  Controls and displays  Instruments and warning/indicator lamps  Warning and indicator lamps
If the indicator lamp lights up, a light bulb has failed. The message indicates the location of the bulb. If the indicator lamp also lights up, a rear fog light bulb has failed. The position of the indicator lamp matches the position on the vehicle.
Drive to a qualified workshop without delay and have the fault rectified.
Vehicle lights: malfunction
There is a fault with the headlights or light switch.
Drive to a qualified workshop soon and have the fault rectified.

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