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Rear fan temp control

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I don’t think that the rear has its own fan. I think it’s just a flap that opens up. I would think that the passenger side would control the right side of the car and the driver side would control the left side of the car. But I might be wrong.
 
I don’t think that the rear has its own fan. I think it’s just a flap that opens up. I would think that the passenger side would control the right side of the car and the driver side would control the left side of the car. But I might be wrong.
Your hunch was correct. I’m ran a test by turning the driver side down to LO and the passenger side up to HI and it was easy to feel the different air temps coming out of each rear vent.