I went to the AUX page group but cannot access the Display Backlight selection by twisting the small knob. My display is barely readable at night.  I have the latest version of MSFS 2024.

I can't make this work either. I do notice a slight anomaly that might suggest it's doing something, but is probably buggy. When you see the display with AUTO mode highlighted, rotating the small knob appears to do nothing BUT a one-pixel horizontal line appears just above the word COM at the top of the display. It kind of looks like this is the bottom of a data field that is displayed in the wrong place, so who knows what's going on. Maybe if there's a way to edit the gauge someone can fix this. It seems to do the same in FS2020 and 2024.

There's some suggsetions in this thread but seems to have only partial success.

https://forums.flightsimulator.com/t/garmin-430-530-too-bright-at-night/690736/61

4 hours ago, 787flyer said:

There's some suggsetions in this thread but seems to have only partial success.

https://forums.flightsimulator.com/t/garmin-430-530-too-bright-at-night/690736/61

Nice link. Thank you.

I tried to follow the instructions but this didn't solve the problem. Apparently, it's still a bug in the Basic variant of the Cessna 172 in MSFS 2024 Premium Deluxe. Hopefully someone will be able to help with simpler instructions? @Bert Pieke @MattNischan ?

This reminds me of someone that used to work for me who drove me crazy. He helped non-technical users by instructing them how to solve an issue by editing the Windows registry.