Answer by Englishangel. Confidence votes 12.5K. This is the sort of question you should ask the person who examines you. Medical professionals use a lot of lingo that the lay person doesn't understand and the doctor or midwife doesn't think twice about it so ask if you don't understand. a long cervix is quite normal.
The fan or fans should run when the coolant temperature in the radiator is above the temperature of the thermostat for your vehicle. Probably around 190 degrees. The answer should be in your operators manual as to what temperature a fan or fans should come on. Sometimes just one fan will operate if the water temperature dictates.
1 The temperature control also influences Mode and Fan speed when they are under automatic control.  Contrary to manual systems, the temperature setting does not directly control the mix of air. On a 90 degree day, setting the temperature to 60 will not be any colder than setting it to 70, at least initially.