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      09-14-2014, 08:35 PM   #1
Onetime237
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AC/Heat Fan Power

I know there's been an earlier thread on some AC issues... My problem is the power of the fan - it's just weak. Temp is fine - the air flow is poor unless I keep it at the top setting...which still is not super powerful for the last fan level. I took mine in to get looked at...they said it was similar to other vehicles they've seen. There's just no power...It's like something is blocking the air (which technically nothing is).

Anyone else have this issue?
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      09-14-2014, 08:43 PM   #2
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Quote:
Originally Posted by Onetime237 View Post
I know there's been an earlier thread on some AC issues... My problem is the power of the fan - it's just weak. Temp is fine - the air flow is poor unless I keep it at the top setting...which still is not super powerful for the last fan level. I took mine in to get looked at...they said it was similar to other vehicles they've seen. There's just no power...It's like something is blocking the air (which technically nothing is).

Anyone else have this issue?
If you don't even know if you have an M4 or an M3, how do you know how to operate the A/C?

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Originally Posted by Onetime237 View Post
I've had a similar thing with my M4...tinted shop job. I reset all the vehicle data - MPG consumption, etc. I dropped the car off at 22.6mpg and got it back with 16.2mpg. The odometer had not changed. So, on one hand they did not drive it, but they may have redlined it to hear the note.
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M3 BSM here...
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      09-14-2014, 08:48 PM   #3
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I closed the rear vents which helped air flow.
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      09-14-2014, 10:04 PM   #4
Onetime237
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Originally Posted by gmcconn535 View Post
If you don't even know if you have an M4 or an M3, how do you know how to operate the A/C?
Typo. Thanks for your insight.
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      09-15-2014, 07:10 AM   #5
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Tapping the right Max AC knob has been enough for the Florida tropics so far. 90-98 degree weather after sitting in the sun for a couple of hours.
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      09-15-2014, 10:38 PM   #6
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When the AC is set to auto, the fan speed buttons set the max fan speed for the auto mode. When my car was delivered, it was set to the lowest speed. So in auto mode, it never went above the lowest setting.

Hit the fan speed up button a few times and you'll get higher fan speed when you need it.
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