I went to change mine today and discovered i have these electrostatic ones too. When they're plugged in, i get that image on the climate control. not sure if it means "filter is functional", or "clean filter". I'm just going to give the filter part a wash and the static coil an air blow i think. EDIT: on second thoughts, the honeycomb filter is fibrous and looks like it wont stand up to a wash. Interesting, the japanese writing on the side of the coils says "warning: do not disassemble, risk of electric shock". So i presume the control module for them bumps the 12V up to something much higher to create the ionisation effect!