@ScarDuck14
All the Wheels that aren't supported with a Default-Schema have the same issue. Most users I know have a keyboard nearby and hit the according button for immersive pitstop or use third party Software to map Wheel-Buttons to keyboard inputs.
There are several threads and bug reports about immersive pitstop like this one: https://answers.ea.com/t5/Technical-Issues/Turn-in-to-pits/m-p/11598775#M1848
I'm fine with the keyboard workaround but having to remap and relearn half of my Buttons on the Wheel is quite a bummer. It's not like with PS-Wheel or Controller that you see a Symbol and know what button it is. The buttons are just numbered. Like "Push button 35 to confirm". Most of the numbers are clustered but with no specific order. So you've to work a lot with a cheatsheet for lesser used buttons 😉
It's just weird that you can set all your buttons like you want as long as your wheel is not offically supported. After that some actions are locked. The only benfit of a supported wheel is that it works out of the box in the way Codemasters thinks it's best.
In my case the button I used for MFD is now the Accept-Button and my Accept-Button is now the Abort-Button which was quite confusing.
The number of buttons depends on the wheel you use. The formula-style GS and FSR have 8 "Button"-buttons, two pressable thumbwheels and the pressable sticks. The five rotary switches on the faceplate can be changed from just turning left or right as a Button-Klick (e.g. for changing Engine-Mapping) to individual "Buttons" for each selection. In theory 60 Buttons 😉 in search for the magic pitstop button I played around with that and the Button-Test-Function and ended up with the result that Button 107 is the highest I got when I was half way round one of the rotary buttons. Seems like other games have the same issue.
Unfortunately Moza has also the ES and CS wheel with way less buttons. They're more like the Logitech-ones with the gamepad-amount of buttons. But they seem to be recognized as "Moza Wheel" excpecting to be an FSR/GS-Wheel. Not like Thrustmaster or Fanatec where you've specific settings for different wheels. Full circle to locked keymappings: Button 35 is hardcoded for Accept and you can't change it. ES/CS-Wheels don't have a Button 35, can't change it, because there's a preset for Moza-Wheels and you're not allwoed to change it 😉
The current solution is to remove the two Moza-Files from the actionmaps-folder and map the buttons as you like and loose the immersive pitstop-option.
And because the default-schema is just a plain XML-File my developer-brain hoped for custom-settings beeing also a XML-File anywhere on the filesystem and sneak in that pitstop-settings there.