Power Steering Failed problems of the 2009 Mercedes Benz C300

The contact owns a 2009 Mercedes Benz C300. While attempting to start the engine, the vehicle failed to turn on and the steering lock engaged. The vehicle was towed to the dealer who replaced the steering lock and the control unit. There was no further information available. After retrieving the vehicle and driving, the brake ebr, abs, esp and power steering failure messages appeared. The cause of the failure was not diagnosed. The manufacturer was notified. The failure mileage was 63,033.