In an impressive cascade of failures, a problem with the door locks could lead to the vehicle rolling away. A door that can't tell if it's open or closed can lead to some other problems, too, that are less about safety and more about convenience. At the time, it was treated as a quality failure rather than a safety issue, but the company continued to investigate. Benz said that since 2021 it has received 176 field reports about the main problem the corroded switch causes. If that safety feature doesn't work, the vehicle could roll away.