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      12-25-2017, 11:47 AM   #1
Ab3_Fr0man
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Heat Sucks along with the AC

-28 Celsius outside today and my cars heat can barely warm it up. This AC / Heat system is so pathetic. I have both front set to +28 full fans and auto off. Can barley feel any heat coming out of the system.

Man this is disappointing, can't get cool in the summer and now I can't get warm in the winter. Fuck BMW, get you shit right!
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      12-25-2017, 01:34 PM   #2
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Can't wait to experience real cold. I noticed my fan is quite noisy when cold though. Anyone experiencing fan being noisy. Parhaps just noisy in general (can't recall my F11 was like that).
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      12-26-2017, 02:29 PM   #3
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Have you played with different drive modes?
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      12-26-2017, 04:11 PM   #4
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Quote:
Originally Posted by Almaretto View Post
Have you played with different drive modes?
As in Eco Pro / Comfort or Sport?

I was in Comfort when I experienced the crappy performing heat. Should this make a difference? or is it a known bug?

Thanks!
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      12-26-2017, 04:13 PM   #5
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Quote:
Originally Posted by Ab3_Fr0man View Post
As in Eco Pro / Comfort or Sport?

I was in Comfort when I experienced the crappy performing heat. Should this make a difference? or is it a known bug?

Thanks!
EcoPro and Comfort can slow down HVAC.
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      12-26-2017, 04:30 PM   #6
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Quote:
Originally Posted by Almaretto View Post
EcoPro and Comfort can slow down HVAC.
Why would comfort slow down the HVAC? is it not the default driving mode?

Does it say this in a manual? or is this a know glitch? I have read that ECO pro will slow down HVAC but nothing mentioned about Comfort mode.
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      12-26-2017, 04:38 PM   #7
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Quote:
Originally Posted by Ab3_Fr0man View Post
Why would comfort slow down the HVAC? is it not the default driving mode?

Does it say this in a manual? or is this a know glitch? I have read that ECO pro will slow down HVAC but nothing mentioned about Comfort mode.
EcoPro more than Comfort, but curious if you have better results in Sport.
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      12-26-2017, 06:19 PM   #8
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Thanks, I'll give it a shot and post back.
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      12-27-2017, 06:37 AM   #9
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I use comfort all the time and heat has not been a problem. And the heater has gotten a good workout with the very cold weather the Cleveland area has been having.
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      12-27-2017, 07:30 AM   #10
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I can't see the modes making any difference with the exception of eco pro which gives you the choice as to whether you want to use the a/c compressor or not . At those temperatures though I don't think it would be relevant as I was always under the impression that the compressor would not work when the ambient temperature is below 0C
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      12-27-2017, 01:09 PM   #11
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the fan speed is also an issue too. even putting at full blast feels at 3/5 on a regular car...
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      12-27-2017, 02:11 PM   #12
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What are your center vent temps set to? Cold/Neutral/Warm?
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      12-27-2017, 05:16 PM   #13
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Quote:
Originally Posted by ryannnlin View Post
the fan speed is also an issue too. even putting at full blast feels at 3/5 on a regular car...
yes that is the problem I think.

* Center vent temps are set to neutral.
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      12-27-2017, 11:12 PM   #14
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Quote:
Originally Posted by Ab3_Fr0man View Post
yes that is the problem I think.

* Center vent temps are set to neutral.
1) Totally agree on the fan speeds. My SO has a 440i, and just like my 335, the blower means business. The setup in the G30 is subpar in terms of airflow and distribution.

2) Set the center vents to max heat; let us know if you see any change.
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      01-03-2018, 12:43 AM   #15
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I would suggest you lower the temp settings from +28 to around +20 or +21. If you set them as high as to +28 the car will have a hard time to reach this and therefore not warming anything at all.
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      01-03-2018, 07:02 AM   #16
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Quote:
Originally Posted by Velgro77 View Post
I would suggest you lower the temp settings from +28 to around +20 or +21. If you set them as high as to +28 the car will have a hard time to reach this and therefore not warming anything at all.
does that really make sense?? I can't see how that would work at all.
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      01-03-2018, 09:46 AM   #17
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Quote:
Originally Posted by Ab3_Fr0man View Post
does that really make sense?? I can't see how that would work at all.
Does not to me. It is my understanding the vehicle HVAC systems are more sophisticated than those in a home. Unlike house, car will work harder and adjust fan speed to reach target.
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      01-03-2018, 11:10 AM   #18
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Going back to the original question
So it was -28c .how long was your journey on this occasion, wondering how long you have it to warm up?
The fan speed setting defines the maximum fan speed it can select but doesn't mean that's necessarily what it needs at that point in time.( so you could have it set to 5 but it could be virtually nothing if the cabin is at the desired temp or perhaps right after starting when cold when it decides not to blow cold air into cabin until warmer is available)

I get warm air very quickly which suggests to me that there is electrical heating as this is before the coolant temp gauge has started to move.

As the car is new you should take to the dealer to sort if it turns out there is a genuine issue. Odd though as they would have tested it in such climates
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      01-03-2018, 10:45 PM   #19
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Maybe they forgot to put in additives like coolant at port.
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      01-04-2018, 12:12 AM   #20
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Quote:
Originally Posted by Ab3_Fr0man View Post
does that really make sense?? I can't see how that would work at all.
Well it doesn't hurt to try it out and see. Normally we don't have those low temps where I live in Sweden but -15 to -20 normal winters. When I start the car in these low temps it takes a lot longer for the system to start generating heat if I choose for example 23 degrees instead of 20. It is also noticeable if you start your journey and set it to 23 and then lower it to 20, you can actually hear the airstream accelerate and start producing heat faster.

I'm talking about the initial minutes after starting, after a while when the system seems to be up and running and produce heat you can increase temp settings although I never tried setting it as high as +28. Never used higher than +23 in very cold conditions, normal setting for me this time of year is +21 to +22.

I really don't know the tech behind all of this but I do spend a lot of time in my car, 8-90000km per year, and this is the conclusion I have. Might be wrong but as I said initially just try it and see if you can see any difference. The car should without hesitation be able to give you a good climate even in these low outside temps.
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      01-06-2018, 08:35 AM   #21
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sorry I should have added more info:

I have a heated garage, car always starts nice and warm. It's +20 in there always.

I was on a highway road trip to the lake, it was probably close to -40 with the windchill that day. Total drive time to the lake was about 1 hour 10 mins. The car started off nice an warm but it could not keep it warm while on the highway. It's not like it was freezing cold in the car, I just expected a nice toasty warm car when the heats on full, but couldn't seem to get it there...

Sorry if I sounded like a jerk Velgro77 - I appreciate the response.

I'm taking the car in next week and will have them look into the issue further for me.

I'll be going back out to the lake later on next week, hopefully we get some nasty cold again to test further.

Thanks,
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      01-06-2018, 08:53 AM   #22
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What's your coolant temperature like , normal values I assume?
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