Method for operating a control system of a vehicle, which has at least the following: a) a drive motor which is controlled by a drive control system and which drives at least one driven axle having a first drive wheel and a second drive wheel, b) a differential gear mechanism between the first drive wheel and the second drive wheel, which is driven by the drive motor, c) a brake device which is controlled by a brake control system and which has a first brake actuator for the first drive wheel and a second brake actuator for the second drive wheel, d) a steering brake function, with which a steering action on the vehicle can be achieved by selectively controlling the first brake actuator and/or the second brake actuator of the at least one driven axle, e) a traction control system, with which an inadmissible drive slip at the first drive wheel and/or at the second drive wheel of the at least one driven axle can be guided back to a permissible drive slip by e1) engaging in the drive control of the drive motor, wherein the drive power of the drive motor is reduced, and/or by e2) engaging in the brake control system of the brake device, wherein a drive wheel which has inadmissibly great drive slip, is selectively braked by the first drive wheel and/or the second drive wheel, characterised in that f) if the steering brake function is active or has been activated at the at least one driven axle and if the traction control system is then activated at the at least one driven axle, in the context of the traction control system the engagement in the brake control system of the brake device is dispensed with. a) a drive motor which is controlled by a drive control system and which drives at least one driven axle having a first drive wheel and a second drive wheel, b) a differential gear mechanism between the first drive wheel and the second drive wheel, which is driven by the drive motor, c) a brake device which is controlled by a brake control system and which has a first brake actuator for the first drive wheel and a second brake actuator for the second drive wheel, d) a steering brake function, with which a steering action on the vehicle can be achieved by selectively controlling the first brake actuator and/or the second brake actuator of the at least one driven axle, e) a traction control system, with which an inadmissible drive slip at the first drive wheel and/or at the second drive wheel of the at least one driven axle can be guided back to a permissible drive slip by e1) engaging in the drive control of the drive motor, wherein the drive power of the drive motor is reduced, and/or by e2) engaging in the brake control system of the brake device, wherein a drive wheel which has inadmissibly great drive slip, is selectively braked by the first drive wheel and/or the second drive wheel, characterised in that e1) engaging in the drive control of the drive motor, wherein the drive power of the drive motor is reduced, and/or by e2) engaging in the brake control system of the brake device, wherein a drive wheel which has inadmissibly great drive slip, is selectively braked by the first drive wheel and/or the second drive wheel, f) if the steering brake function is active or has been activated at the at least one driven axle and if the traction control system is then activated at the at least one driven axle, in the context of the traction control system the engagement in the brake control system of the brake device is dispensed with.