Hot Air By Legs While Running Ac - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 12-15-2009, 06:54 PM
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Hot Air By Legs While Running Ac

Does anyone know what causes hot air to come out from underneath dashboard while rest of the car is blowing cold air.

I have my AC set on AUTO at 60 degrees and it feels like a furnace at leg level, but it blows real cold from the dashboard and door vents. If I were to switch from AUTO to just legs while running my AC it blows nothing but hot air.

Could this be part of the reason why I keep losing coolant without noticing any leaks whatsover. I have to top off the coolant every other day...or every 100 miles or so with at least half gallon of 50/50 antifreeze. There is no visible smoke or coolant smell inside or outside of the car. There is no oil in coolant or vice versa.

THANK YOU GUYS FOR YOUR FEEDBACK!!
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#2 (permalink) Old 12-15-2009, 06:59 PM
OMFG another one!?
 
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There might be a leak from or near the heater core. The heater core valve is likely stuck, keeping the core hot. Also maybe a dash flap that directs air to the heater core is stuck.

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