Which of the control lights visible in the illustration informs you that the rear fog lights are enabled?

The warning light marked with the letter A indicates that the rear fog lights are on. Its characteristic orange colour and straight, horizontal lines symbolise a strong light directed straight backwards. For differentiation, warning light C (green, with slanted lines) indicates the front fog lights, and warning light B (green) indicates the dipped headlights. In accordance with Art. 51 para. 2 of the Road Traffic Act, rear fog lights may only be used when visibility drops below 50 metres.