That's a good find. It will disable the alarm if the temp is below 37F when you start the car. Unfortunately, it doesn't disable the alarm if the temp falls below 37F while driving. Which, for those of us that garage cars, is the only condition we see and which will always trigger the alarm.
"When CC_TEMPERATUR_WARNUNG is nicht_aktiv, car will alarm about cold weather every time you turn on the car, if outside temperature is +3c or below. Car will also alarm if the temperature drops below +3c while driving. When the parameter is set to aktiv, car will not alarm when you turn it on. It will still alarm if the temperature drops below +3c while driving. So, the parameter is reversed, it must be set to aktiv to prevent warning while starting the car."