One problem related to power assist brake vacuum has been reported for the 2011 BMW 550. The most recently reported issues are listed below.
The contact owns a 2011 BMW 550i. While driving 70 mph, the accelerator pedal was depressed and the drive train warning indicator illuminated. The vehicle lost momentum. Also, the brake pedal did not stop the vehicle when it was depressed. The contact was able to slow down the vehicle by depressing the brake pedal with both feet. The dealer stated that the vacuum pump failed. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 101,000.
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