Certain 2016 Mercedes Benz C300 4Matic vehicles could experience a loss of power steering assist. According to the defect report, an incorrect torque sensor control calculation may cause a software issue that could lead to temporary deactivation of the power steering assist. The problem will result in increased steering effort, a warning message in the instrument cluster, and an audible warning chime.

Owners receiving notices will be asked to return to their Mercedes dealerships to have the electric power steering control unit software updated. For more information about the defect, owners are asked to contact MBUSA customer service at 1-800-367-6372. The NHTSA campaign number for this recall is 16V-438.