At what temperature the BMW 5 E60 is activated by a snowflake detector inside the yellow triangle

This indicator on the BMW 5 E60 panel is lit when the temperature on the street falls below 3 degrees Celsius. This option is intended to warn the driver that there may be a holoice education on the road surface that may even occur at a flat temperature under bridges, overpasses and other places where there are no direct sunlight. The ignition of the indicator should serve as a signal to the driver that further movement must be continued with increased caution.