When you set the volume for the passenger announcements in the cab, you cannot change the setting. Only when leaving the menu, you are asked if you want to save the changes. After a while, however, the volume is back to 100% anyway, which is annoying.
I have to change this every time I open the game and it is getting very annoying, especially with the extra step because the ‘apply’ button doesn’t work. I did report this when TSW6 released and I would have been reasonable in expecting a fix a long time ago but I’m afraid DTG’s attitude to console UI fixes is legendarily bad, has been for years. You just have to hope the issue doesn’t get copied over to TSW7. That is likely the earliest they will attempt a fix for this issue.