Hi, firstly all brake pads, checked brake fluid system bled twice. 2014, 12months today. All syptoms point to Master cylinder. pulling up never a problem. If you keep your foot on the brake pedal, it slowly drops towards the floor. When it happens i cannot fit my left foot under the pedal. The master cylinder has supposedly been replaced under warranty. They have asked me to get another opinion from an other toyota dealership, which i'm doing in two days. If no satisfaction, i will be trading car in on another...not Toyota....shame i've had 3 toyotas since 2000.