Abandoned vehicles on private property- what s the procedure in Kentucky and Illinois?

I ve tried to find out what I could. Seems KY is either a reasonable date, 15 to 30 days, with either certified letter or newspaper notice.

IL says that law enforcement has to be invovled, and most of it is about highways, etc.

Vehicle is in KY. I bought it from a guy, he had an open title. Been in contact with local IL authorities, but no luck in finding him. Hoping to run a newspaper notice for however long needed, figured he is less likely to read it, and since he can t be found at his address, letter would do no good.