I had this problem, and had 3 different components replaced, with this recalled system being the one that fixed it (so who knows I might be the case that started the recall, since this happened in August).
Mine started with the power steering system simply failing in high-heat situations, this happened twice, but was not reproducable. This got worse and worse, and finally, the cooling fan simply never came on, no matter how hot the engine got. Of course this got pretty bad, and BIG time overheat problems.
Scared the crap out of me!