Today I replaced my 2 year old Cabin Air Filter behind the glove box of my 2017 Model S. It also has a BIO defense mode. What I noticed was the cabin filter I took out looks clean with no stains or dirt. I have put in 87,000 miles on the vehicle and my thoughts were the filer should be dirty after use.
Is this normal for the filter to be so clean that looks brand new? The arrow was facing down with air flow.
Thanks
Is this normal for the filter to be so clean that looks brand new? The arrow was facing down with air flow.
Thanks