So Ive noticed my HVAC recently. WHat do I mean by this? Well, if youre used to how the AC compressor kicks on in an ICE car when its idling, youll kind of get what Im talking about. Ill be sitting in the vehicle (not moving) with the AC on, and I will (seemingly) randomly feel and hear a very slight low frequency "drone" start in the cabin. You can feel the slight vibrations in the steering wheel, and you can hear a very low, and very quiet noise. I can confirm this is the HVAC, as the noise/vibration will stop completely if I turn the climate control off. Whats more interesting, is that this "issue" will go away for some time if I simply toggle the HVAC off/on quickly. So my question is this... do I need to make an appointment with the SC or is this normal?