Just saw this posted on reddit. Looks like window venting was added to the control page of the Tesla app with version 3.10.0 which was released today. According to the poster on reddit pressing the vent button in the app drops all 4 windows down a few inches and pressing it again closes the windows. I don’t see the option with my 3 running 2019.32.2.2 so I’m assuming this is limited to early V10 builds at the moment. Here’s the reddit post: Window venting in newest Tesla app update! : teslamotors