It started when I tried to use the brakes with the car off. I put the key in and turned on the accessories to unlock the steering wheel. I was on a hill and backed the car down slightly using the brakes while the car was off (the reservoir was pretty low at the time but I filled it back up since). Now when I start the car, the pedal goes to the floor when I brake. Did I get air in the lines? Can I bleed the brakes from the master cylinder like you did in your video?
Thanks!
If the brake pedal is hard when the car is off and after you turned on the car, it gets soft, the brake master cylinder is faulty.
I just tested it again, it stiffened up when I pressed with the car off but goes to the floor with the car on. I'll start by replacing the master brake cylinder as directed. Thanks!