Found the possible reason: When i tried to follow the main motorway and tap the start location nearer and nearer i found this: at some point it succeeded finding route : just at some ceratin point on the motorway and forward. The motorway is on the map, but when i pinpointed the location where it no longer could find the rote on the same motorway, i zoomed in and saw: map is broken, the road just ended. when i zoom out again, road appears back.... broken maps? all updates for maps are up to date. I will try to reload the maps again later and if that does not work, i attatch some screenshots to back up my statement here.