The auxiliary pump that circulates coolant through the electric heater to supply heat to the cabin while running in EV mode seems to be a fairly common problem on these cars. Is there any damage to NOT replacing the auxiliary pump? If I am reading WopOnTour1's post correctly, the auxiliary pump...

Gen1-2012-100k km: Parking overnight after a 3 hour highway drive revealed a couple ounces of coolant under the front right. Visual inspection could not find the source, the lowest drips were found at the bottom of the high voltage A/C pump. Not enough loss to see notable change in tank levels...