The luxury automaker says in a report to federal regulators that the steering systems in the cars "may fail due to the loss of power steering fluid."
Mercedes-Benz says that if that happens, drivers "may not have sufficient control of the vehicle . increasing the risk of a vehicle crash."
The recall affects the 2010 Mercedes C-Class and the 2010 and 2011 E-Class Coupe and Cabriolet models.
Owners may return the cars to dealers, who will check the powering steering systems for free, the company says.