Method for evaluating an operating device and control unit

An operating device has a plurality of touch switches in a row next to each other, wherein the touch switches are capacitive touch switches, each with a capacitive sensor element, wherein a hook or moving a finger over a sensor element is detected. Directly adjacent sensor elements are electrically coupled in each case by means of a coupling resistor connected with each other, each second sensor element is electrically connected by means of a Tastenvorwiderstandes with an evaluation for the detection of an operation of the operating device by replacing or moving a finger over it. The sensor elements in between each are not connected directly to the evaluation, they are connected only to the coupling resistors with neighboring sensor elements.