Need fix: Blocking outside air doesn't work in Yaris like it did in the older Camry

When driving my old 1995 Camry sedan through stinky situations like areas with industrial smoke stacks or country roads with manure spraying, I could easily switch to indoor air and it worked perfectly. But the same feature doesn't make any difference AT ALL on the 2009 3-door Yaris hatchback. My questions are:

1. why the Camry and not the Yaris? 2. is there a fix? (it's been like this since purchased new in 2009)

I'm looking forward to a road trip in the Yaris and really want to be better prepared this time. The Yaris gets much better mileage and I no longer have the Camry anyway.

Keep on groovin' 🚶

\[UPDATE\] I found a YouTube video showing how to take apart the dash and check the cable on the back of the dial. But my dash doesn't look like the one in the video and pulling on the side panels doesn't make them come loose. ‼️ PLUS, I'm remembering that if I have the air on recirculate, the windows do steam up. So with that in mind, I'm wondering if the dial connection is fine and it's something else?

The YouTube video: [https://youtu.be/SrcGUE4ud2Q?si=YSa9a1JaPmiofAfy](https://youtu.be/SrcGUE4ud2Q?si=YSa9a1JaPmiofAfy)