u/Cutter70

I have a E92 coupe and for the life of me, I cannot figure out how I’m to get the lower part of the rear window clean on the inside. There is such a tight wedge, I can’t get my hand down in there with paper towels to wipe up the spray cleaner. Does that back horizontal shelf with speakers come out? Do I just wrap dusting stick in paper towel and just jam it in there?