I still have functional brakes. They just dont' grab until the pedal is mostly to the floorboard. For a month I would have normal brakes until driving the car for awhile, then two or three pumps would be needed to get the power assist to firm the pedal as normal. Now no pumping action will restore the normal pedal, but the brakes continue to stop the car. I have not bled the lines, but I am suspecting the booster. I'm tempted to DIY, but I don't like bleeding brakes manually in the garage. I don't do enough of it to warrant buying a pressure bleeder. The booster is about $200 on the Net -- will see what the job runs at my favorite place in Tyson's Corner Virginia.