V60 clatters

Hello! Our V60 (D3, Kinetic, 19000 km) has been clapping for a few weeks. It’s a short noise that sounds more like plastic parts, which occurs with short bumps (e.g. Gulli cover). On a brisker journey, e.g. highway it no longer occurs. The noise comes clearly from the rear right, e.g. height recirculation seat/C-pillar. My search has so far only resulted in exclusions: It is not the trunk flap, not the cargo compartment cover, not the luggage net, not the tank lid, not the belt and there are no parts lying around. Has anyone experienced a tip or even similar and if necessary solved? I am grateful for any help!