All of the safety features have two layers.
Lane keep assist you turn on via the steering wheel, but lane departure warnings are always on unless you force them off using the button on the ceiling
Same with adaptive cruise control you turn on and off via the steering wheel, but emergency braking is always on unless you force it off using the button on the ceiling.
for both ceiling buttons there is a big orange notice on the dash to let you know when it is off, and I'm pretty sure they both turn back on every time you start your car