Transmission control systems for motor vehicles

Circuit control device which is intended for operation in a motor vehicle, comprising a plurality of drive power modes (M; M1, M2, M3), in which an engine (1) generates the driving force in response to operation of an accelerator pedal, the apparatus as control modes one with the motor (1) the automatic transmission (3) connected having an automatic transmission mode in which the gear ratio is automatically controlled in response to a predetermined circuit pattern, and a temporary manual shift mode in which the transmission ratio temporarily from a plurality of predetermined fixed speed ratios by actuation of a switch (36, 37) can be selected when the ride takes place in the automatic switching mode, said apparatus comprising: - an erasing condition storage unit in the transmission control unit (20), the condition data stores for deleting the temporary manual shift mode, depending on the variety of modes (M; M1, M2, M3) vary; - an erasing condition determining unit in the transmission control unit (20) selects the temporary manual shift mode erase conditions for the temporary manual shift mode in response to a current mode and a determination is carried out whether the erase conditions are met; and - a control unit in the transmission control unit (20) which returns the temporary manual shift mode to the automatic switching mode when the erasing condition determining unit determines that the erase conditions are satisfied for the temporary manual shift mode, - wherein comprise the plurality of modes (M) at least a first mode (M2), which gives a comfort-oriented and economic driving manner priority, and a second mode (M3), which gives a sports-oriented and maneuverable driving greater priority than the first mode ( M2); and - wherein during travel in a normal operating state, the erase conditions likely to be met for the temporary manual shift mode in the first mode as the erase conditions for the temporary manual shift mode to the second mode (M3).