One problem related to power steering pump has been reported for the 2004 Mercedes Benz S Class. The most recently reported issues are listed below.
The contact owns a 2004 Mercedes Benz sl500. While driving the contact noticed that her check engine light illuminated and oil was leaking in the vehicle front of the vehicle. The vehicle was towed to a local mechanic who performed a diagnostic test. The failure was located as the power steering pump. The vehicle was not repaired. The failure and current mileages were 68,000.