The invention provides a control system (10) intended for choosing and selecting functions in a vehicle, the system (10) comprises a housing (14), a lever extending along a main axis from a first end, pivot-mounted about a pivot axis (L, T) as far as a second end which is fitted with an actuating knob (12), it being possible for the lever to turn about the main axis, and an elastic return device that returns the lever to a neutral position comprising an axisymmetric cone-frustum-shaped operating surface, the axis of which is the main axis and, as the lever pivots, the active zone travels along a generatrix of the cone towards the vertex, the elastic means becoming more highly stressed than it is in the neutral position.