I'm confused about the cooling/heating system on the inside. My husband changed the heater coil (I guess that's what it's called), and yet it still doesn't get warm unless it has been driven for a prolonged period of time. We followed directions specifically from our booklet that came with the car. The low coolant light stays on continually, even when full. We are tired of freezing in the winter and burning up in the summer!! Yes, this car has been a pain in the ass, to say the least. Very disappointed.