I took my '03 Toyota Avalon (with 175,000 miles) to the local Toyota dealership to get an oil change and tires balanced and rotated. They called to tell me that my car also needed a transmission fluid exchange and a brake fluid exchange. I was told that both of these items were in the red, “critical” stage and so I agreed to both services. My roommate picked-up the car for me because I was unavailable and the first time she applied the brakes they failed and mashed all the way to the floor. She was able to get to an empty parking lot and drove in circles pumping the brakes until they firmed up. She continued on and thought the brakes seemed “a little soft” but they were working. The next day we drove 60 miles to work, went in to work for 8 hours, got in the car to go home and when my roommate applied the brakes to put the car in reverse they failed again. She again pumped the brakes and they firmed up and we then drove the car straight to the Toyota dealership that serviced it. I explained what happened and they did seem to be concerned. The dealership has now had my car for 2 days and they have checked the brake lines and fluid level, both of which they say are fine. They say they are driving it repeatedly and that they need the brakes to fail on them before they can diagnose the problem. They have not - and refuse to - repeated the brake fluid exchange service.
I am terrified to drive my car and am not confident that it will fail on the Toyota technicians and that they will be able to solve the problem. Any advice would be greatly appreciated!