About 20 minutes into a 3.5 hour drive in the Alabama summer Monday, my AC stopped working. Changing the fan speed does make the blower get louder, but there's no noticeable difference in air output from the vents. Changing the "mode" from the upper vents to the lower vents doesn't seem to do anything, so I'm guessing some sort of control solenoid or some junk has gone out. I read a few threads about this for the older cars but didn't see any how to guides or parts lists or anything. This problem sound familiar to anyone? Any articles/threads on how to fix it?

2010 E350 4matic, 77k miles

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2010 Mercedes E350 4Matic - 77k miles
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