Ticking sound after going down hill

If I go down a steep hill my car will make a ticking sound when I step on the brake. This ticking sound continues even after I am no longer on the hill. Sometimes it will go away after a few minutes but sometimes in doesn’t go away until I park the car and shut it off for a period of time. Going down the steep hill is what triggers the ticking or clicking to start. It seems to be coming from the front of the car but I can’t be sure. I checked the brake fluid level and it isn’t low. Any idea what might be causing this.