METHOD FOR ASCERTAINING THE COUPLING STATE OF A TRAILER COUPLING, STATE ASCERTAINING ASSEMBLY, AND VEHICLE

A method for ascertaining a coupling state of a trailer coupling between a towing vehicle and a trailer, wherein a pivotal connection between a towing-vehicle coupling element on the towing vehicle and a trailer coupling element on the trailer is established in a locked state of the trailer coupling, the method including ascertaining coupling information, wherein, depending on a position of a locking mechanism of the trailer coupling and/or a jolt of the towing vehicle and/or trailer, the coupling information indicates whether the trailer coupling might be in the locked state. The method further includes ascertaining positioning information, wherein, depending on sensor signals of a wave-based sensor device, the positioning information indicates whether the trailer coupling might be in the locked state. The method further includes ascertaining a coupling outcome, depending on the coupling information and also depending on the positioning information.