I've posted before about this when I 1st got my E70. Now it's doing it again occasionaly. I go through my settings and I have mine just exactly where I want my side, and the passenger side, to be-as cold as possible! Now, it started doing it again! Is this indicative of my freon running low? While we're talking about freon, can someone please chime in on freon and how it behaves over time under heavy usage [summer time] and it's long term characteristics in these E70's? Looking for preventative maintenance tips... And what about the button on both the driver's and passenger's side with the 3 lines on it? What exactly does it do?
TIA!

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