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Old 02-13-2013, 11:01 AM   #5
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Originally Posted by ibinubu12 View Post
Ford does this deliberately. For floor mode, they may ask for 90% of the air go to the floor, the balance to the defrost registers. This is to prevent fogging of the windshield, as floor, mix, and defrost are generally considered to be "heating" modes.
It's really annoying when systems are engineered like this... If i want heat to my feet i'll direct the heat that way.... if my windshield is fogging up, i'll put on the defrost/defoger. It's not so complicated (ford, et al). We don't need the HVAC system to think for us... we are perfectly capable of working the HVAC on our own and deciding what needs doing when.
Frankly, once the car is warmed up reasonable well, usually w/in a few minutes, i've rarely had the windows fog/frost up, except in extremely cold weather (temps hovering either side of zero F).
The next time i purchase a vehicle i will go for one w/o auto wipers, auto lights, and auto HVAC.... I much prefer to the driving and associated tasks by myself.
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