Brake Master Cylinder Problems of BMW 645

The contact owns a 2005 BMW 645ci. The contact stated that while traveling 30 mph up a hill, the brakes failed to respond. The brake pedal went to the floor and the contact had to apply the emergency brake to stop the vehicle. The vehicle was taken to an independent mechanic, who diagnosed and repaired the brake booster , the vacuum pump, the brake master cylinder, the vacuum line, the brake vacuum pump, and the brake vacuum gasket. The vehicle was repaired. The manufacturer was notified of the failure and stated that the vehicle was not included in NHTSA campaign id number: 10v446000 (service brakes, hydraulic). The approximate failure mileage was 89,290.

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The contact owns a 2004 BMW 645ci. The contact stated that the vehicle was repaired under NHTSA campaign id number 10v446000 (service brakes, hydraulic:power assist:vacuum). The contact stated that a year after the repairs were completed, a brake failure occurred and there had not been a failure present before the vehicle was serviced under the recall. The vehicle was taken to the dealer where it was confirmed that the master cylinder and booster had failed. The vehicle was not repaired. The manufacturer was contacted about the issue. The failure mileage was 150,000 and the current mileage was 150,100.

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