Brake system and method for controlling a brake system

A method for controlling a brake system including:

• a first module, comprising a first pressure supply unit having an electromotive drive and a first control apparatus for controlling the first pressure supply unit, wherein the first module is configured to apply a pressurizing medium to at least one first brake circuit by way of a first connection point, and at least one second brake circuit by way of a second connection point, wherein the brake circuits are assigned wheel brakes,
• a second module, comprising a second pressure supply unit, in the form of a motor/pump unit, isolation valves as well as brake pressure adjustment valves, comprising outlet valves and inlet valves, configured to adjust pressures in the wheel brakes, and a second control apparatus for controlling the brake pressure adjustment valves,
• a detection unit configured to detect a first event, wherein, to provide an anti-lock braking system (ABS) function during the first event, the brake system is configured to implement a wheel-individual and/or selective adjustment of the pressures in the wheel brakes while actuating at least one of the brake pressure adjustment valves of the second module,
• wherein the first pressure supply unit is controlled such that the first pressure supply unit, when releasing pressure from the wheel brakes via respective ones of the outlet valves associated with respective ones of the wheel brakes by opening the outlet valves to provide the ABS function, generates a pressure sink having a lower pressure than the pressures in the wheel brakes,
• said method comprising:
• controlling the first pressure supply unit of the first module by means of the first control apparatus in a normal operation,
• controlling a multiplicity of the brake pressure adjustment valves in the second module in the normal operation,
• detecting a first event corresponding to a partial failure of the second module, and
• controlling the brake system in the first event in such a manner that for providing an ABS braking operation and/or a yaw torque intervention, a wheel-individual and/or selective adjustment of the pressures in the wheel brakes takes place while actuating the first pressure supply unit and at least one of the brake pressure adjustment valves of the second module and/or the isolation valves of the second module.