I’ve yet to find radio control on the steering wheel. The inly controls behind yhe wheel are colume up/down and mode (IIRC), whatever mode means.
No way to cycle through radio stations or change tracks.
On some cars there's some sort of wheel in that stalk (sometimes embedded in the stalk itself so can be easy to miss as it's hidden behind the steering wheel).
Also if the volume up / down is on the radio stalk, maybe the track up / down and stations change is the arrow buttons on the handsfree controls? Or does that always just scroll through the contacts list?
I assume the mode is to switch between inputs e.g. radio / bluetooth / USB / ...
They feel like they have been thoughtfully designed, they work well and they seem easy enough to use (the thing they lack is a "next track" button, which is only on the central console) but for some reason I almost never use them and usually use the buttons on the console instead.