I've decided to change the pollen filter today in my Beetle, also wanted to check the ECU code so I removed all the plastics and what do I find? A bunch of leafs! There were so many that I could not see the ECU!
Changing out the filter was easy, its just that the cowling is not a very good design with large holes protruding into inside of the car what were they thinking?
Ok, I'm done venting
Avoid parking under trees!!!