Brake Light On problems of the 2007 BMW 750

The contact owns a 2007 BMW 750li. The contact stated that the brake warning light illuminated and the brake pedal became hard to depress, which made it very hard to stop the vehicle. The vehicle was taken to a dealer. The technician diagnosed that the check valve of the brake vacuum pump leaked oil into the brake booster. The dealer informed the contact of NHTSA campaign number: 10v446000 (service brakes, hydraulic). However, the VIN was not included. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 120,000.