I always drive in eco mode and I always set the brake hold when driving so the vehicle does not creep when stopped for a light. When I finish a drive and press the stop button, sometimes the parking brake button shows red meaning the brake is on. When I begin another trip I need to press the parking brake button to disengage it. Nearly just as often when I finish a drive and press the stop button, the parking brake does not engage and it is not on when I restart the vehicle. I realize this is a minor thing, but there must be some reason why the parking brake is engaging at the end of some trips but not at the end of other trips. Can anyone tell me why I experience this inconsistency?