Can’t confirm, but suspect there is a fan that draws/blows air through a radiator for the liquid cooled batteries as there is a definite “fan sound” while charging. Probably a dirty radiator would be a greater concern than a dirty fan. Or, a low coolant level.
Yes, I hear the fan running too.
I guess my question is how to inspect the fan housing, and if the water cooling fan housing, if it has a filter - how to get to it and clean it.
If it doesn't have a filter, then how to clean the fan inclosure. Did anybody look into that?
Sorry for not being clearer with my question.