After parking out in the sun and heat, (Tampa, Fl.), after starting the car, the air volume coming out of the vents in the A/C mode (temp. set at 78 degrees) came on at the highest level. Understandable as it was quite hot inside the car.My wife standing outside the car near the front was completely surprised by the fan noise emitting from beneath the hood. As long as the climate control was in the "Auto" mode, the speed of the fan would not decrease. I thought it would decrease as I drove, but after close to 15 miles of driving, there was no decrease in the volume of air coming out of the vents. Could not hear the radio from the loud blowing noise. Had to use the rocker switch to manually control the speed. Started to experiment as I drove by raising the temperature and still no decrease of air blowing from vents. Same event also occurred today. This only occurs when car is parked in the sun/heat. It is garaged at night, so normal operation of fan speed blowing in the AM is normal. Did not experience this during the winter months, but the heat is coming on now in Florida. Any ideas/suggestions before I take the car into the dealer would be greatly appreciated. It is a 2010 E-350, so any issue will be covered by warranty, but would like to have some knowledge before showing up at the dealership. Thank you
