I own a 2015 Subaru Impreza Sport and once in awhile all of my dashboard warning lights come on and stay on until I turn the vehicle off. Nothing shows up on a diagnostic reader and doesn't affect the operation in any way. It happens in the heat, cold, night or day. I have taken it to a mechanic and they can't find anything wrong? The mechanic mentioned to bring the vehicle back when it does this but they're either closed or I'm not nearby. Any Suggestions??
