[Joemac8]

I have a 2019 X740i. I have tried to activate the seat cooling function by setting the climate control button on the dash. I then touch the blue setting up to three. I feel nothing in the seat. No cooling, no ventilation, nothing. In winter the heating function worked as expected.

I went to the owner's manual and under ventilation it says:
"Press the button. Select the ventilation level:
▷ Press the button once for each level.
▷ Turn the Controller until the desired level
is reached. Press the Controller.
▷ Select the desired level on the touch‐ screen.
Highest level reached when three blue LEDs light up on the button or three blue bars are shown on the Control Display"

What exactly is the "controller"? Is that the regular fan setting?

What I want is cooling. I had seat cooling in a 2015 Suburban and it was quite evident when on and got very cool. My BMW gives me zip.