Twice recently, my radio/backup screen has been completely black when starting my drive – and later come back on while driving around town. What’s happening?
My wild guess would be a failing Body Control Module. https://moduleexperts.com/5-common-symptoms-failing-body-control-module-bcm/ Regardless, unless it has more than 36k miles a 2018 should be under warranty. Let the dealer fix it.
Dave’s right. At least take it to your dealer and get a repair document showing you reported the issue. While still under or near warranty. Could be helpful later.