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2010 2011 BMW 5 Series Forum F10 BMW 5-Series (F10) Forums General 5-Series Sedan and Wagon (F10 / F11) Forum Hot air blowing from vent near A-pillar
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      12-09-2016, 12:58 AM   #1
bavarianboar
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Hot air blowing from vent near A-pillar

One month old 2016 F10 bought brand new.

Hot air keeps blowing from the vent/fan near the windscreen. Pic attached, the one I am talking about is the vent facing up, and its in the back of the steering wheel on the far left top corner in the image.

AC running, Auto or Manual. Both cases I can feel the hot air blowing out of that 'up' vent. Any ideas why this could be?



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      12-09-2016, 06:06 AM   #2
Bbb34
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Quote:
Originally Posted by bavarianboar View Post
AC running, Auto or Manual. Both cases I can feel the hot air blowing out of that 'up' vent. Any ideas why this could be?
Wild guess here, but not sure if you're aware that on dual central vent, on the right side of steering wheel there's middle "thumbwheel" where you can make temperature adjustment, blue for cold, red for hot (besides open and close functionality). Maybe yours is turned to hot ?

From F10 manual:

Ventilation/Front ventilation
▷Thumbwheels for adjusting the temperature, arrows 1.
Toward blue: colder.
Toward red: warmer.
▷Lever for changing the air flow direction, arrow 2.
▷Thumbwheels for opening and closing thevents continuously, arrows 3.
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      12-09-2016, 09:56 AM   #3
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Quote:
Originally Posted by Bbb34 View Post
Quote:
Originally Posted by bavarianboar View Post
AC running, Auto or Manual. Both cases I can feel the hot air blowing out of that 'up' vent. Any ideas why this could be?
Wild guess here, but not sure if you're aware that on dual central vent, on the right side of steering wheel there's middle "thumbwheel" where you can make temperature adjustment, blue for cold, red for hot (besides open and close functionality). Maybe yours is turned to hot ?

From F10 manual:

Ventilation/Front ventilation
▷Thumbwheels for adjusting the temperature, arrows 1.
Toward blue: colder.
Toward red: warmer.
▷Lever for changing the air flow direction, arrow 2.
▷Thumbwheels for opening and closing thevents continuously, arrows 3.
Yes, sir. That is always on blue. Checked it while I was fiddling with the controls.

I feel this blast of hot air while driving and wasn't able to figure out. Tried everything that could do the temperature adjustment.

If I place my hand at the vent even the plastic parts feel warm to touch. Confused at the moment.

Even when the car is just about moving after say 5 hours parked at work, the warm air comes up instantly on driving. Does not seem to be overheating or engine heat transfer either
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      12-09-2016, 10:05 AM   #4
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Quote:
Originally Posted by bavarianboar View Post
Yes, sir. That is always on blue. Checked it while I was fiddling with the controls.
Was worth a shot, because to be honest, I just discovered this fine adjustement few weeks ago. (I know, I know, but... "real men" don't read manuals... right)
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      12-09-2016, 05:04 PM   #5
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A couple of thoughts....

"Warm" air should come out of that vent to defrost the side windows.

How much heat does that electrical device in the air vent generate?
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