Last night, a cold night (1 celcius, about 34 fahrenheit), I went for a ride, just to find out how the freezing warning light works. Well, first of all, it does! When the thermometer reaches 3 celcius, about 37,5F, the yellow light starts to flash as does the temperature reading. They both go on flashing for something that seems to be a minute, then stops flashing. It just stays on afterwards, even if the temperature goes lower.
Since I did not find any thread about this new functionality on the Wee, I just thought I would share this information!