You have to go to the track list (not album or artist) and above the 'A' tracks there should be a random button. It will begin playing. Once it starts you should see a 'RDM' button on the bottom left. You can toggle random off and on from there. I believe these are the steps. Just as an FYI, I have an '17 sedan and I noticed the physical radio looks different but the software looks the same. And I may be forgetting a step. If I remember, I'll try to do the steps in my car again to verify.