BMW will be asking approximately nine thousand sedan, crossover, and roadster owners to return their vehicles to a manufacturer repair facility for a safety defect that could result in the loss of oil supply to the vacuum pump. Due to an insufficient interference fit, the seal disk in the camshaft could move during engine operation, potentially restricting or blocking the oil supply holes. Over time, the pump could fail resulting in loss of power assist braking and an increased chance of an accident. (Even with loss of assist, the service brake control is able to stop the vehicle because affected vehicles meet the applicable FMVSS pertaining to conditions in which there is a loss of power assist braking.) Continue reading