a control system for controlling an adjustment device which is operated by electric motor in a motor vehicle includes an indirect anti - trapping system for detecting a trapping situation between an adjustment element , which is moved by the adjustment device in an adjustment movement along an adjustment path , and a vehicle element . the anti - trapping system stops or reverses the adjustment movement of the adjustment element if a defined threshold value for a mechanical running parameter — which results from the adjustment movement is exceeded . the anti - trapping system operates with an analysis unit for analyzing the adjustment movement of the adjustment element , wherein the control system is configured and embodied in such a way that by means of the analysis unit , in an analysis mode , the running parameters of the adjustment device can be checked for mechanical functional faults of the adjustment device .