To avoid an adverse effect on the sensor by the heater. A controller for a heater installed in a vehicle lamp, where the controller detects a rising edge of a light emission period of a sensor light emitted from an object detection sensor built in the vehicle lamp, and starts supply of a drive voltage to the heater in accordance with the rising edge.

The invention relates to a fastening device for fastening a headlamp in a motor vehicle, having a first and a second fastening element, which are connected to one another by means of a latching connection, wherein the first fastening element and/or the second fastening element have a predetermined breaking point.