I had a 2014 Prius the vent would always get clogged up with dust bunnies. As far as the Niro, I haven’t noticed any dust build up. I took pictures on where they are.The latest years Toyota Hybrids have a hybrid battery fan filter that needs to be cleaned/changed periodically. I was wondering if the Kia Niro has this filter and where is it located? How to access it?