In the parking lot, when I start the car to go backward. I tried to put my feet on the brake to slowly go backward, however, the brake is so tight and I can't push it down with my feet at all.

Finally, I have to put the car on parking and then turn off the car . When I turn on the car again with key, then brake works again.

I am really worried if the brake just goes out of control while I am driving on the highway.