Since one doesn’t use their winch often, often the controller is put away somewhere and the owner has to try to find it “buried” somewhere in the back of their vehicle.
Usually, when you need a winch, you also need it quickly. Your winch controller should be conveniently available. When alone, I keep mine in the Passenger seat. When I have a passenger I keep it in a bag attached to the back of my driver’s seat where I can quickly get to it.