hand scribbled numbers on the inner fender panel on the driver side
 

Hi,
We recently bought a '12 X5 50. I have a few nub and stupid questions. Are the the fender panels of the LCI X5 made out of the same plastic as the pre-LCI X5. Just noticed it tonight as I "feeling" the car - please don't laugh at me. The other nub- might be serious - question is that when I look into the driver side (not passenger side as I previously wrote) of the engine bay, I noticed that there's an eight-digit, hand scribbled numbers written upside down on the inner fender wall. It seemed like it was written with fine point white pen, but when I tried to use my hand to wipe it off, I couldn't seem to wipe the numbers off. Why would they (dealership or BMW) "write", instead of stamping, numbers on the inner fender panel? Can someone chime in on this?

I'm going to guess just a manufacturing assembly process aid... maybe a part lot number or work order/build ID...there are thousands of numbers that go into a car being built. Heck, there are 20 part/item numbers that comprise the document pact that sits in the glovebox.

Fenders are plastic.

A