The government’s auto safety agency said in a posting to its website Monday that the recall involved Mercedes-Benz C-Class vehicles from the 2010 model year and Mercedes-Benz E-Class vehicles from the 2010-2011 model years. The recall involves vehicles produced between June 2009 and late February 2010.

Daimler told the government that the loss of fluid could make it difficult to control the vehicle in a parking lot, where maximum power steering is required.

The German automaker said in a statement that the gradual loss of fluid was generally followed by a whining noise from the power steering’s pump, which could make it difficult to steer while parking.

Daimler said the vehicle remains steerable.

The recall is expected to begin this month. Owners may contact Mercedes-Benz at (800) 367-6372.