A number of plants are now simultaneously associated with the manufacture of advanced driver assistance module and airbag restraint controllers by auto parts suppliers. Each plant introduces a different variation in the calibration, testing, supplier management, and change management. To address this issue, this paper suggests the lifecycle assurance leadership as a managerial model, which links safety decisions integral to all stages up to concept, and field feedback. The model has six-dimension Lifecycle Assurance Index and a central assurance office where plant level leads are considered. We experimented the model in a year-long program in five plants which produced forward camera modules, front radar units and restraint controllers. The defect rate in the network decreased from 57.4 percent to 62.0 parts per million. Calibration escapes reduced by 71 percent and the time of audit findings reducing as much as from 41 to 17 days. There was a reduction of defect rate spread in plants by 38 percent. Regression analysis indicates that every one-unit increment in the index decreased the defects by 2.9 parts per million. Ramp up learning went up by a factor from 0.18 to 0.31. These findings show that leadership practice can be used to identify most of the quality difference between the plants.
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