An arrangement on a component of a motor vehicle, having a sensor with a substantially planar end surface, a sealing ring which encloses the sensor, and a carrier element for maintaining the spacing of the sensor in the axial direction relative to the component. The sensor extends with the sealing ring into a cut-out of the component. The sensor has a surrounding sealing ring, an additional ring element which lies further to the outside in a radial direction and has at least two cut-outs which are distributed over the circumference. The elastic ring element of the sealing ring or decoupling ring seals against water which enters from outside and for correct self-positioning in the cut-out of the component. The cut-outs according in the ring element, which lies on the outside, allow water which has entered to drain.