How can you do a personal lien on personal items?

You must go to court and file the action and win. If you win the court will issue a judgment lien.

If invalid a motion can be filed with the court to have the lien removed.If valid the lien must be paid or settled with the lien holder.

You'd go to where your car was taken to and tell whoever is working there nicely that you have some personal items to get from your car and they'll ask for money and you'll give them money but before...

Call the repo company.

Personal property, as opposed to real property? Sure. Cars are personal property. Diamond wedding rings are personal property. Etc. If you pledged it as security...it certainly would seem that was...