Control device for a recuperative brake system of a vehicle and method for operating a recuperative brake system of a vehicle

The control device (10) has a driving unit (12) that determines desired total braking torque change during deceleration through first data signal allocated in consideration of a setting signal (14). The actual total braking torque change is determined during deceleration through a second data signal. The weighting factor (16) is specified during deceleration time with respect to a comparison between desired total braking torque change and actual overall braking torque change, if target engine-braking torque is reduced and target friction braking torque is increased. An independent claim is included for a method for operating regenerative braking system of vehicle.