Abstract: An actuating mechanism for a flap in motor vehicles which, by means of an electric step motor, adjusts the flap between two end positions determined by limit stops to selectable intermediate positions corresponding to a regulating command. In order to compensate step losses, the regulating command, when the flap is adjusted in one end position, corresponds to an adjustment that exceeds the magnitude of the command this end position.

Abstract: In a control unit for a heating and/or air conditioning for automobiles with individual temperature control elements for two areas and with a common inside temperature sensor, the temperature of both areas can be adjusted or changed individually and independently of each other by directly activating both control elements by means of associated delay-value setters and by delaying the signal modification at the input of a common controller through the desired time setters for a sufficient time until it is offset by a corresponding signal modification of the inside temperature sensor.