A device for manually and/or electromotively adjusting or securing a first vehicle part and a second vehicle part relative to each other comprises an adjustment part that has a joint for pivotal arrangement on the first vehicle part, wherein the adjustment part is to be arranged on the first vehicle part in such a way that, when the vehicle parts are adjusted relative to each other, the adjustmentpart moves relative to the second vehicle part. An output element to be arranged on the second vehicle part is operatively connected to the adjustment part and can be driven in order to move the adjustment part relative to the second vehicle part and is connected to a shaft. By means of a flexible force transmission element, a first end of which and a second end of which are attached to the adjustment part, the output element is operatively connected to the adjustment part in such a way that the output element rolls on the adjustment part during a rotational movement. A sensor device (5) is associated with the shaft (34) and is designed to detect the angular position of the shaft (34) by means of sensors. In this way, a device for manually or electromotively adjusting and/or securing twovehicle parts to each other is provided which makes it possible to detect, using sensors, the absolute position of the vehicle parts to be adjusted relative to each other in an easy and cost-effectiveway.