Electronic control units in the vehicle are exposed to extreme ambient temperatures during their life cycle. Malfunctions and failures not only involve logistically complex repairs, but also pose a major safety risk in the vehicle itself.
Automotive manufacturers therefore require comprehensive and sophisticated testing procedures, which ensure a high level reliability in the electronic components. Under extreme climatic conditions, technological problems can be detected by the run-in test, especially during the initial phase of production. On the one hand they can optimise the production processes but on the other hand they can result in early failures.
Run-in test units reduce the probability of failure, because the increased error rate is overcome in the first phase of the “bathtub curve”.