Heated air is not going to blow out of the vents. It is an automatic system, and max heat will be floor only. It will start to transition as the temperature is lowered. Defrost on the other hand, is selectable as a mode. As far as the heat being inadequate, I would check that your coolant level is full, and that you don't potentially have a thermostat that is stuck open. At operating temperature, you should be able to grasp the upper radiator hose, but only for about 10 to 30 seconds depending on your tolerance. If you can keep a continuous grasp, then you have a thermostat issue.
Saturday, January 29th, 2011 AT 4:40 AM