I was just reading up on the FSU and I see that that could very well be my issue. It also seems the warmer out it is the more likely we are to have a dead battery in the car. Guess I'll find a place to order one from and spend some more quality time with the X5. Thanks again guys!!!
I assume this will work!!
BMW E53 X5 M62 4.4L > Climate Control > ES#1832895 Blower Motor Resistor - 64116920365