So it is the water temp sensor on that image?

If so, that is the one I "attempted" to do. I unplugged with Key ON. Then started the car and the aux fan did not turn on...I thought maybe it was the wrong sensor, but maybe not? I checked the fuse and it looks fine.

Like I said though, when the A/C was functional, the aux fan was working fine.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k