Zf Friedrichshafen Ag

Tobias Hartmann

Michael Sohler

Magnus Stiefenhofer

A method for operating a drivetrain of a motor vehicle includes elevating a system pressure acting on a plurality of shift elements (A, B, C, D, E, F) when one of at least one positively locking shift element (A, F) is closed in a force-locking-free state, increasing a torque output by a drive assembly () and then subsequently reducing the torque output by the drive assembly () while the system pressure is elevated by an intervention with the drive assembly (), and reducing the system pressure after reducing the torque output by the drive assembly (). The one of the at least one positively locking shift element (A, F) closed in the force-locking-free state or another one of the at least one positively locking shift element (A, F) is opened while the system pressure is elevated and the torque output by the drive assembly () changes.

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Korntal-Münchingen, Germany

Tobias Hartmann