Join Date: 31st May 2009
Thanked 40 Times in 32 Posts
the climate controll will blow cold air to stabalise the temperature in the cabin. if for example you select the highest temp possible the climate controll will heat the cabin as quickly as possible and then maintain it by adding cold air when too hot. you dont say what year civic you own so the battery drain may not be the micu unit. there are many known faults that can cause this and they vary according to car age, engine, spec etc. dealer will look into that for you.