Update: Hour and a half commute this morning in stop and go traffic and the fuse is holding strong. I am 90% sure it would have popped again by now. Suffice to say I have identified my issue as a faulty Auxiliary Water Pump. This little sucker costs $160 so I am going to give it a few weeks before replacing just to be certain plus I will not need strong heat here in CT for a while.

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2005 BMW X5 4.4 Sport Upgrades:

Dinan Cold Air Intake
Dinan Stage II Software
Akebono Euro Cermaic Pads
Brembo Rotors
Titan Silver Metal Gauge Rings
DICE IPOD Module
Hardwired Passport 9500ix Radar/Laser Detector