Method and device for operating a motor vehicle braking device

The invention relates to a method for operating a braking device of a motor vehicle with a service brake 16 and a parking brake 14. When activating a roll braking function (S1) and reaching a vehicle standstill is monitored (S2) of an actuation organ with regard to whether a driver contact with an actuating member holds. To improve the safety of the roll braking function is provided that, if the monitoring (S2) indicates that the driver has no contact with the actuation member, by means of an electrical or electronic braking means 26 for controlling the service brake 16 and parking brake 14 engaged the parking brake 14 is (S3) or a brake pressure is modulated with the service brake 16 which corresponds to the maximum, can be generated by the parking brake 14 brake pressure (S10). The invention further relates to a corresponding method in which a monitoring (S11) of the vehicle is carried out in view of the possible vehicle movement and if the monitoring shows that the vehicle has set in motion by means of the control device 26 via the service brake 16 are all at the service brake 16 connected to wheels of the vehicle are braked (S12). Furthermore, the invention relates to devices correspondingly formed.