heatrer randomly comes on
I have a brand new 2012 mustang gt six speed manual. In the last two months the following has happened twice. I have been driving the car for around 30 mins in a normal way,no hard acceleration or anything. The ac is tuned off. The heater randomly comes on full blast for about 5 seconds. 88 degrees F appears on the radio station screen in two places in large font. Is this something do with engine cooling? My engine temp gauge is at normal running temp when this happens Does anyone know what this is?