Bimmerfest - BMW Forums - View Single Post - No Heat-Blows Cold Air Thru Side and Center Vents
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Old 12-07-2010, 10:27 AM
Wayne's World Wayne's World is offline
Monkey Wrencher
Location: Easton, PA
Join Date: Dec 2010
Posts: 215
Mein Auto: 2005 325i Sport 5spd
Well I haven't experienced this problem but I know how the heating system works. Fan blowing (i'm assuming at low, medium & high speeds) and cold air coming out means your heater core is not getting the coolant through it. So likely the heater/blower relay is toast. That's my educated guess. Other possibilities is the heater core is cracked or leaking. But likely you would've either smelled coolant burning or experienced a leak in your cabin.
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