It worked yesterday, and when I turned it on today, put fan on full, and no air of any kind comes out. I have had an issue I thought where sometimes ice cold, others cold, but not ice cold. Someone said Blower Motor Control Resistor? Is this the problem? The car is 15 years old, but only 68,000 miles. I am the 2nd owner. I just bought it in Dec 2013. BTW it is my 1st Benz, and I'm freekin out! Have had BMW's & Saab's before so I am familiar with euro cars.