2006 BMW 750LI brakes problems

Brake vacuum pump booster has failed due to contamination even after brake booster supply line was replaced in december, 4, 2010. When vehicle is in motion, the car loses power to brakes, brake pedal feels hard and vehicle takes 20-30 ft longer to brake even if pushing down with maximum force. This caused vehicle to take an infinite amount of time to stop, which resulted in car nearly running into another vehicle when issue occurred. Luckily I swerved off highway unto median.

. While driving I came to a intersection I depressed the brake pedal but the brakes did not respond. I continually applied pressure to the brake pedal until the brakes responded. The vehicle was taken to an independent mechanic for diagnostic testing where the mechanic replaced the front brakes and rotors. The mechanic found contamination in the brake booster and notification of NHTSA campaign id number: 10v446000 (service brakes, hydraulic:power assist:vacuum) the vehicle was towed to the dealer.