[Android Head-Units] ScorpionSX:
I'm going to check what is displayed with ZLINK/Carletter, but I believe there was nothing, but I have to verify that, it's been some time since I used carplay (I use it mostly on longer drives because of the navi, but I'm staying mostly at home during holidays) ... but FM3, that I'm sure it will not display anything, it just disappears and is back on, when I select another band.

I just briefly went through Dynavin website - I think they are the ones who are mostly invested in providing some better integration than other "brands" - and it's really just VW group cars that have better level of integration. Others such as BMW, they mostly have things like rear view camera, steering wheel controls or maybe some better stereo system - if the car can be equipped by that from factory.

I believe it's either the market - they simply have more customers from the VW group (VW, Skoda, Seat, Audi, even Porsche,...) which is quite big, so it's profitable to invest in the research, or like you said, it's simply just easy to decode their canbus network. But there are some free tools that you can use to modify (lets say) BMWs by yourself - DRLs, lights, clearing codes, even tune maybe, etc... - so there must be already a way to read the information on the CAN network.

Also, I noticed, but I don't know the cars first-hand so maybe I'm wrong, but I think that VW cars actually have a lot of information displayed and more importantly controlled by the factory infotainment screen, so when you develop an aftermarket HU, you have to implement it, because otherwise the owner couldn't use some functions of the car. If the climate is controlled by the OEM screen, it has to be on the aftermarket one as well - and so on...if your car doesn't have this, they simply don't bother too much with implementing that communication integration.

I'm actually tempted to get the Dynavin D8 Premium unit, just to see if it actually can deliver some more information than they actually advertise, but the price is still too much for me. If this S5 unit breaks at some point, then maybe I will try to justify it somehow.

With my car specifically, there is a thing where with the factory radio, you don't automatically have the information available on the cluster right away. If you have the low-level radio, you don't have anything in the cluster. I think only with the navigation stereo you get the navigation instructions and maybe also station names and so on - but I think this also depends on market/dealer, etc...so the point is, that from factory this is not there and you have to code/activate it by yourself - and the chinese engineers probably don't even realize that it's an option, so they don't bother implementing it. 90% of the model's market doesn't have it, so they can't even be aware that there is a possibility to have it.

But it's getting better I think. I had many headunits (android/wince) before and the can integration was terrible on many of them, but with recent canbus boxes it's much better - I never though I will be able to see the "doors open" graphic on my car - but there it is now with the latest Raise box.

And one more information that I got from the seller, so finally back to the point of the thread, they told me to go in the Car Info app, in the "CD panel" setting, to try to set up the stereo the same way as is the OEM one. Tbh I have no idea if there even is a "CD panel" setting in the app, and if so, what's in it, but I will definitely look. My seller was quite helpful with this, so I hope maybe I will get somewhere.🤞