My 2016 Summit's climate control AUTO mode fails to gradually lower the blower fan's speed over time, even after the cabin temperature has reached a selected comfortable temperature, say, 72° . Instead, the blower continues full-blast, and after a little while I'm (a) feeling downright chilly; (b) I'm tired of cold air being blasted through the top vents, which are almost always aimed fully AWAY from my face and torso, and (c) the noise of the max blower speed is irritatingly noisy.
In other words, there is nothing "Auto" here. Unlike any other vehicle I have driven, in which the auto mode gradually throttles back the fan speed and settles down as the desired cabin temperature is reached, I instead have to manually/gradually dial back the blower fan speed. Something is clearly not right here. It appears that while in AC Auto mode, the microprocessor is not correctly measuring the cabin temperature, so it just blasts away. (No, I have never seen any ice crystals being spit out of the air vents.)
This summer in central Ohio, it commonly reaches 90° or more. I put in place a reflective windscreen behind the windshield when the vehicle is parked. When I first get into the vehicle on a hot day and start it up, I will often select Max AC temp setting, and LO appears on the touch screen. I also open the rear windows for a little while as I get underway. A few minutes later, I will push the "auto" button, and the set temperature display then reads my set 72°, and the button for "Recirculate" shuts off. (So far, so good.)
However, as mentioned above, when in auto mode, the system continues to operate as if the cabin is hotter than hell, even though I am having goosebumps because it is so cold inside the cabin.
Finally, I will also mention (perhaps most significantly) that even when I get in the vehicle in the morning and the outside temperature is 68°, the blower fan will run at Max speed even when set on Auto. It seems as if the vehicle not only does not know the cabin temperature, it is also not correctly registering the outside ambient temperature! So, there I am, driving away and it's 68° outside with the temperature set at 72° in the cabin, and when set to auto mode, the system is blasting me out of my seat with cold air!
Even when it is very cool outside, I have never seen the AC auto perform anything automatic whatsoever. Has anyone else experienced this in a 2016 Summit? I will be taking it to the dealership this weekend to discuss the problem further.