A control system, method for control, and control software for operating a startup shift element of an automated motor vehicle transmission or automatic transmission capable of electro-hydraulic or electro-pneumatic actuation with an electronic transmission control device, whereby the startup shift element may be shifted hydraulically or pneumatically in emergency mode even if the electronic control device fails. The control system includes a transmission-independent control module, and a emergency-operation mode shift valve capable of electrical triggering, that controls the hydraulic or pneumatic actuation device of the startup shift element. If the transmission-independent control module fails during transmission emergency-mode operation, the startup shift element is capable of actuation by means of the electrical triggering of the emergency-operation mode shift valve via the transmission-independent control module. This may particularly control a motor-vehicle startup procedure.
An automatic or automated transmission of a motor vehicle and a method for control of the transmission in which in an emergency operation of the transmission a maximum admissible engine torque and a maximum admissible engine rotational speed of a prime mover of the motor vehicle connected or connectable with the transmission and a maximum admissible transmission input torque and a maximum admissible transmission rotational speed are limited compared to a normal operation. After a change from emergency operation back to normal operation of the transmission, a starting performance of the motor vehicle is time limited, especially limited in time and gradually limited depending on events.
