I purchased a 2008 Prius last month and have been going through my maintenance checklist since I have no idea what the previous owner did. yesterday, I decided to check out the HV battery fan, and it's a good thing I did because it was dirty! I took my time and cleaned the fan vanes and both plastic intakes that connect to the fan. Can the filter that's installed on the intakes be replaced? I've been searching but all I can find part numbers are for the filter that's beside the rear seats. Thanks!