intermittent electrical–radio changes stations, rear door unlocks,panic horn goes off–with or without the keys present, driver door open records transm. not in park, and have noise in back area when I open drivers door.
You have a 2018 vehicle. You are still under warranty, take it back to the dealership and make sure you keep all records in case they are unable to solve it. If you dealership can’t figure it out, try a different one