I assume you know its a fly off handbrake, to set pull back on lever & press the button. To release pull on lever & let go. Do you say it does nothing because it does not hold the car when set? I initially did not like the fly off action but soon got used to it. When at traffic lights I tend to just pull back on the lever but not press the button. As an Engineer it annoys me when people set the hand brake by just pulling back in the lever & not holding the button in, this wears the ratchet.
