I bought my 2002 A4 in September, weather was warm back then. I live in Maine, so as soon as the weather started to drop my light came on and wouldnt turn of after restarts or during driving. No May came, and the weather is warmer again. First day it was above 60 degrees, my ESP light wasnt on, which made me very happy, but I later noticed, that as soon as the weather drops below 55, the light comes on. As soon as its 56 or above, light goes away. I wonder if anyone know what can be the issue?