The invention relates to an assembly for an electronic element (4) and a hydraulic element (3) of a control device (2) for the automatic transmission of a motor vehicle with a partially oil-filled transmission housing. Said control device (2) is arranged in the transmission housing and is at least partially surrounded by oil. The hydraulic element (3) has a valve housing (5) on which hydraulic valves (6), speed sensors (7, 8, 9) and pressure sensors (10, 11) are provided. Said valve housing comprises a first housing part (5A) and a second housing part (5B). Said first housing part (5A) has an at least approximately cuboid shape and is substantially arranged below a set of conical disks (1A) of a variator (1). Said second housing part (5B) extends from a lateral area of the first housing part (5A) upwards laterally of the set of conical disks (1A). The electronic element (4) comprises a printed board (14) arranged substantially parallel to the basic plane of the valve housing (5) and a receiving section (15) for a central transmission plug and is arranged on the second housing part (5B). The second housing part (5B) also comprises a plurality of pressure control devices (19), a cooling element (21) which cools at least part of the electronic element (4) and a position sensor (29) for detecting the position of a selector slide (30) arranged directly on the hydraulic unit (3).