I like to have the vent blow in fresh air from the outside. I keep the temp on cool with the fan on, but don't turn on the AC. I've done that for years in many cars. Now with my Xb I am having a problem. Unless the AC is on it blows hot air. It must be pulling it from under the hood. Does anyone know where the fresh air intake is? I believe most cars have it between the base of the windshield and the back of the hood.