Weak air blowing out of driver side vents only?

L9JVV · 11-13-2019, 02:25 PM

The last few days I've noticed that the two vents either side of the steering wheel aren't blowing air (hot or cold) out as powerful as the passenger side ones.

I've made sure all the vents are open, I've open and closed them. I've put the fan full blast. I've changed the middle wheel so that it's full red.

The right side feet and windscreen seem to be blowing air out at the same intensity as the passenger but that's a lot harder to test.

Previously when the fan was on full I could hear it working but now I can only hear it from the passenger side.

Anyone know what could possibly be the problem? Going to take it to the dealers tomorrow but it's no longer under warranty.

Car in question: F31 330d 65

James-335dx · 11-13-2019, 03:01 PM

Quote:

Originally Posted by L9JVV

The last few days I've noticed that the two vents either side of the steering wheel aren't blowing air (hot or cold) out as powerful as the passenger side ones.

I've made sure all the vents are open, I've open and closed them. I've put the fan full blast. I've changed the middle wheel so that it's full red.

The right side feet and windscreen seem to be blowing air out at the same intensity as the passenger but that's a lot harder to test.

Previously when the fan was on full I could hear it working but now I can only hear it from the passenger side.

Anyone know what could possibly be the problem? Going to take it to the dealers tomorrow but it's no longer under warranty.

Car in question: F31 330d 65

I assume you have the left and right side set at the same temp? If not that would probably explain the different fan speeds

L9JVV · 11-13-2019, 03:19 PM

Quote:

Originally Posted by James-335dx

I assume you have the left and right side set at the same temp? If not that would probably explain the different fan speeds

Yep both at the same temp. Everything is open to full

James-335dx · 11-13-2019, 03:35 PM

Quote:

Originally Posted by L9JVV

Quote:

Originally Posted by James-335dx

I assume you have the left and right side set at the same temp? If not that would probably explain the different fan speeds

Yep both at the same temp. Everything is open to full

Are you in eco pro? As I know that also adjusts the climate to an eco setting. Just trying to think of some more obvious things first.

L9JVV · 11-13-2019, 03:41 PM

Quote:

Originally Posted by James-335dx

Are you in eco pro? As I know that also adjusts the climate to an eco setting. Just trying to think of some more obvious things first.

Nope, never go into eco pro. But I did switch it to eco pro then out to see if that made a difference.

I've tested and tried most obvious things, messed about with all the settings.

Nothing has come up on the dash recently apart from low coolant which I topped up and since then it has remained the same level, which I've checked everyday

PX3 · 11-14-2019, 05:10 AM

I understood this was normal (read it somewhere), mine is certainly the same. It will blast more air out on the passenger side, than the drivers side. Not sure if it levels out once you reach the final required temperature.

Otherwise maybe mine is knackered too!

Techno 9000 · 11-14-2019, 09:51 AM

^ +1
If there is a fix, I want to know.

shoestring · 11-14-2019, 10:27 AM

+ another one ...I do as well!

simnew · 11-15-2019, 07:20 PM

On my 2015 model 4GC, there was a software update to the aircon which fixed this.

Passenger used to always blow cold I think and completely different temps from the centre vents. Related to over compensation by the solar sensor.

I'll try and find the fix number 😇

simnew · 11-15-2019, 07:21 PM

My 2018 440i GC didn't have the problem. Take this to the dealer :

Techno 9000 · 11-16-2019, 02:49 AM

Simnew,
It reads to me that you suffered from a different problem to L9JVV and myself.

You write of a temperature difference, with the passenger side being cold and the TIS certainly shows a fix for that, whereas we are suffering with the Drivers vents having a poor air flow.

"The last few days I've noticed that the two vents either side of the steering wheel aren't blowing air (hot or cold) out as powerful as the passenger side ones."

Has anyone had a poor airflow from the Drivers side vents fixed?

Stainy · 11-16-2019, 03:27 AM

Quote:

Originally Posted by Techno 9000

Has anyone had a poor airflow from the Drivers side vents fixed?

Nope, but add another +1 to people with the same issue. Mine has always done it.

Hooded · 11-16-2019, 05:53 AM

If this is normal then my car must be faulty because it blows roughly the same intensity from both the passenger and driver side vents. Both my E90’s did as well.

L9JVV · 11-16-2019, 05:26 PM

Since writing this post, all the vents are now blowing at roughly the same intensity which was how it was prior to be the problem. I didn't end up going to the garage, all I done one morning was crank everything up to full blast including both front and rear windows and so far it's sorted the problem.

The only other way I can describe it, without knowing actually much about how the heating system works. But imagine there are two fans, one for the passenger side and one for the drivers, on full blast you should hear both of them but when I was having the problem I could only hear the left (passenger) one

11-13-2019, 02:25 PM	#1
L9JVV Private First Class 37 Rep 104 Posts Drives: F31 330D M Sport xDrive Join Date: Mar 2018 Location: Buckinghamshire iTrader: (0)	Weak air blowing out of driver side vents only? The last few days I've noticed that the two vents either side of the steering wheel aren't blowing air (hot or cold) out as powerful as the passenger side ones. I've made sure all the vents are open, I've open and closed them. I've put the fan full blast. I've changed the middle wheel so that it's full red. The right side feet and windscreen seem to be blowing air out at the same intensity as the passenger but that's a lot harder to test. Previously when the fan was on full I could hear it working but now I can only hear it from the passenger side. Anyone know what could possibly be the problem? Going to take it to the dealers tomorrow but it's no longer under warranty. Car in question: F31 330d 65
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11-14-2019, 05:10 AM	#6
PX3 Lieutenant 140 Rep 594 Posts Drives: X3 / F32 Join Date: Sep 2013 Location: South East iTrader: (0)	I understood this was normal (read it somewhere), mine is certainly the same. It will blast more air out on the passenger side, than the drivers side. Not sure if it levels out once you reach the final required temperature. Otherwise maybe mine is knackered too!
	Appreciate 0 Quote

11-14-2019, 09:51 AM	#7
Techno 9000 Captain 518 Rep 944 Posts Drives: 435D Estoril Blue Join Date: Jan 2018 Location: East Sussex iTrader: (0)	^ +1 If there is a fix, I want to know.
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11-14-2019, 10:27 AM	#8
shoestring Private First Class 50 Rep 114 Posts Drives: 2017 F31 320D Sport Auto Join Date: Dec 2017 Location: East Midlands iTrader: (0)	+ another one ...I do as well!
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11-15-2019, 07:20 PM	#9
simnew First Lieutenant 106 Rep 310 Posts Drives: 2018 440i GranCoupe MSport Join Date: Mar 2006 Location: London iTrader: (0)	On my 2015 model 4GC, there was a software update to the aircon which fixed this. Passenger used to always blow cold I think and completely different temps from the centre vents. Related to over compensation by the solar sensor. I'll try and find the fix number 😇
	Appreciate 0 Quote

11-15-2019, 07:21 PM	#10
simnew First Lieutenant 106 Rep 310 Posts Drives: 2018 440i GranCoupe MSport Join Date: Mar 2006 Location: London iTrader: (0)	My 2018 440i GC didn't have the problem. Take this to the dealer : Attached Images
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11-16-2019, 02:49 AM	#11
Techno 9000 Captain 518 Rep 944 Posts Drives: 435D Estoril Blue Join Date: Jan 2018 Location: East Sussex iTrader: (0)	Simnew, It reads to me that you suffered from a different problem to L9JVV and myself. You write of a temperature difference, with the passenger side being cold and the TIS certainly shows a fix for that, whereas we are suffering with the Drivers vents having a poor air flow. "The last few days I've noticed that the two vents either side of the steering wheel aren't blowing air (hot or cold) out as powerful as the passenger side ones." Has anyone had a poor airflow from the Drivers side vents fixed?
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11-16-2019, 05:53 AM	#13
Hooded Banned 1669 Rep 3,967 Posts Drives: F30 330d M-Sport Join Date: Apr 2017 Location: England iTrader: (0)	If this is normal then my car must be faulty because it blows roughly the same intensity from both the passenger and driver side vents. Both my E90’s did as well.
	Appreciate 0 Quote

11-16-2019, 05:26 PM	#14
L9JVV Private First Class 37 Rep 104 Posts Drives: F31 330D M Sport xDrive Join Date: Mar 2018 Location: Buckinghamshire iTrader: (0)	Since writing this post, all the vents are now blowing at roughly the same intensity which was how it was prior to be the problem. I didn't end up going to the garage, all I done one morning was crank everything up to full blast including both front and rear windows and so far it's sorted the problem. The only other way I can describe it, without knowing actually much about how the heating system works. But imagine there are two fans, one for the passenger side and one for the drivers, on full blast you should hear both of them but when I was having the problem I could only hear the left (passenger) one
	Appreciate 0 Quote