Quote:
Originally Posted by acidgreeny
Ok I'll try and explain better outside temp is 20c so driving with no air con on just the fan at low speed after a few minutes of driving say 10 or 15 minutes the air coming out of the vents is hot way hotter than the outside temperature. I can only assume as the e70 has no bonnet vents that all cabin air is drawn through the engine compartment therefore naturally hotter than the ambient temperature. Is this not the case? Is the vehicle designed to be driven with the air con on all the time? Where does it draw air from? On many occasions I drive with passenger and driver windows open but the vents closed as with them open they blow hot air. The air con is left at 20C year round. At 20 outside it should be drawing ambient air not heating it. Does that make sense?
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YES! I am having this exact same problem with our X5 right now. Trying to explain this to our BMW service advisor.
Our AC refrigerant was low to start with, 100grams in system that should hold 700. So we are starting there.
It still does not explain how, on a cold day (45 degrees F or 7 degrees C) we have both driver and passenger HVAC temps set to 60, yet the air coming out is super hot. It's as if we set the temp to 90 on both sides. This is with AC off.
It does not make sense that one has to run AC in the car year round, especially in New England.