2019 F150 XLT E Break noise
 

I have noticed after a longer drive 3-4 hours or so after the truck is parked and turned off that it sounds as if the emergency break is being set or being released I know that the E break is controlled electrically there is no regularity to this, I have had the ford dealership look into this noise they found nothing that would cause this, it has happened with different people driving the truck, anyone experienced this same issue.