Right now, when I try to get the outside cold air, I have to open the window. Even though I have already turned off the A/C, but the air coming from the outside is still warm after I pushed the "outside air mode" switch. Do I miss anything? Thanks a lot!

Make sure your temp is set to your desired setting. I.e. if you want the coldest available outside air, set the temp to "LO". To do that, you'll need to turn on the ventilation (AC is irrelevant), set temp to LO, turn off the ventilation.

Thanks. So I need to adjust temperature setting to get the outside cold air.

Where is the green light on your panel in this picture, is it on the car on the lower left, or on the one to the right of that, just outside of the image? Just above the hazard button,



To have air flow from the outside the light should be on the one with the arrow moving through the car.

Thanks to philwojo and corradoMR2!

Yes, the button with the air moving through the car is green.

I adjusted the temp to "LO" according to corradoMR2, I got the cold air. Again, thanks.