What are these filthy plastic things?

Probably defined as "Edge Protection".

The type of little nothing dealerships like to slap on vehicle and then charge for at an inflated rate.

You should be able to clean it...and hey, maybe there is a marginal benefit.

 

It's factory though. Is a bit of a puzzle.

 

They're stone chip protectors. They won't just peel off either. I have the same on my Lexus CT and it's Pearl White. I just use a multi purpose cleaner around the edges to remove dirt but I must admit they're looking scruffy now. But at least it's protected from the paint chipping.


iPhone ?

 

Protection.I got one of those on inside of my Jdm prius door.

 

Mine easily peeled off with little effort. Used a rag soaked with isopropyl alcohol and cleaned up the glue residue. Took them off two years ago. No issues since.