Two problems related to brakes failed have been reported for the 2006 BMW 525. The most recently reported issues are listed below.
The contact owns a 2006 BMW 525i. While driving approximately 40 mph, the brakes failed. The vehicle was shifted into neutral and taken to an independent mechanic who diagnosed that the booster vacuum was turned at the vacuum pump causing the brake pump to leak oil and contaminate the brake booster. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 140,000.
The contact owns a 2006 BMW 525xi. The contact stated that while driving at various low speeds, the brake pedal was depressed but failed to stop the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that the brake booster failed and needed to be repaired. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 40,000.