I hope someone out out here can help i have a 2012 dj that has been great so far but over the weekend i was driving and hit the brakes and the pedal went to the floor i checked fluid all is good and there are no leaks i can see. now it happens all the time if you let go and pump them the get a little better I don't want to drive car till i get some advice the car only has 50,000 miles please help!!