The invention relates to a method for transferring brake fluid into at least one wheel brake cylinder (10) of a brake system in a vehicle, the method comprising the steps: controlling into a closed state at least one changeover valve (14), via which at least one brake circuit (12) having the at least one wheel brake cylinder (10) is connected to a brake master cylinder (16) of the brake system; after controlling the at least one changeover valve (14) into the closed state, reducing a boosting force (Fv1) of a brake force booster (24) exerted onto at least one adjustable piston of the brake master cylinder (16); controlling at least one high-pressure switching valve (20) into an at least partially opened state after reducing the boosting force (Fv1) of the brake force booster (24); and suctioning brake fluid via the at least partially opened at least one high-pressure switching valve (20) and pumping the brake fluid into the at least one wheel brake cylinder (10). The invention further relates to a control device for a brake system of a vehicle.