Method for operating a brake system of a vehicle, having the step: limiting a brake pressure build-up at least in one brake circuit (10, 12) of the brake system to a response pressure of an accumulator volume (46a, 46b) of the at least one brake circuit (10, 12) at least intermittently during an actuation, by a driver of the vehicle, of a brake actuation element which is connected to a master brake cylinder of the brake system, by controlling at least one wheel outlet valve (40a, 40b) of at least one wheel brake cylinder (14a, 14b) of the at least one brake circuit (10, 12) into an open state; wherein the rear-wheel wheel outlet valves (40a, 40b) of the rear-wheel wheel brake cylinders (14a, 14b), which are assigned to in each case one rear wheel of the vehicle, are controlled into the open state at least intermittently during the actuation of the brake actuation element, and the front-wheel wheel inlet valves (34a, 34b) of the front-wheel wheel brake cylinders (16a, 16b), which are assigned to in each case one front wheel of the vehicle, are controlled into a closed state at least intermittently during the control of the rear-wheel wheel outlet valves (40a, 40b) of the rear-wheel wheel brake cylinders (14a, 14b) into the open state; wherein, before the limitation of the pressure build-up in the brake circuits (10, 12) to the response pressure, it is determined whether a generator braking torque (Mgen) corresponding to an actuation intensity of the actuation of the brake actuation element can be imparted by means of at least one electric motor of the vehicle, and the limitation of the pressure build-up in the brake circuits (10, 12) to the response pressure is implemented only if the generator braking torque (Mgen) corresponding to the actuation intensity can be imparted by means of the at least one electric motor; and wherein if, after the limitation of the pressure build-up in the brake circuits (10, 12) to the response pressure, it is determined that the generator braking torque (Mgen) corresponding to the actuation intensity can no longer be imparted by means of the at least one electric motor, the front-wheel wheel inlet valves (34a, 34b) of the front-wheel wheel brake cylinders (16a, 16b) are controlled from the closed state into an open state, whereby a brake pressure build-up in the front-wheel wheel brake cylinders (16a, 16b) can be effected by means of a further actuation of the brake actuation element by the driver, and after control of the front-wheel wheel inlet valves (34a, 34b) from the closed state into the open state, Δp regulation is performed by means of the rear-wheel wheel inlet valves (40a, 40b) of the rear-wheel wheel brake cylinders (14a, 14b) in order to set a front-wheel braking torque (M-VR) of the front-wheel wheel brake cylinders (16a, 16b). limiting a brake pressure build-up at least in one brake circuit (10, 12) of the brake system to a response pressure of an accumulator volume (46a, 46b) of the at least one brake circuit (10, 12) at least intermittently during an actuation, by a driver of the vehicle, of a brake actuation element which is connected to a master brake cylinder of the brake system, by controlling at least one wheel outlet valve (40a, 40b) of at least one wheel brake cylinder (14a, 14b) of the at least one brake circuit (10, 12) into an open state; the rear-wheel wheel outlet valves (40a, 40b) of the rear-wheel wheel brake cylinders (14a, 14b), which are assigned to in each case one rear wheel of the vehicle, are controlled into the open state at least intermittently during the actuation of the brake actuation element, and the front-wheel wheel inlet valves (34a, 34b) of the front-wheel wheel brake cylinders (16a, 16b), which are assigned to in each case one front wheel of the vehicle, are controlled into a closed state at least intermittently during the control of the rear-wheel wheel outlet valves (40a, 40b) of the rear-wheel wheel brake cylinders (14a, 14b) into the open state;