[AP]

Got into my f10 today where it was about 28c outside so ininterior was pretty hot inside (despite also having the climate comfort windscreen)
it a temperature of 19c selected on both dials, it seems quite slow to coll teh car down. the fan speed didn't seem particularly quick given I thought it would want to get down to the selected temperature as soon as possible.
My E39 used to blow out air at quite a blast to achive that but the F10 doesn't feel very agressive in trying to get down to the set temperature.

All settings were on auto.

Is this common?

[Tuesday]

Common in my car. Even when I park in an underground garage the air blows warm at first - obviously due to heat soak through the HVAC system.

[AP]

interesting, I thought my e39 was better if I'm honest.

[The X Men]

Do you have a max button?

[AP]

yes and that blasts cold air but didn't think I'd have to do that , that the fact its on auto it would effecively do that for me.

[HighlandPete]

I can imagine the latest systems are a bit more subtle than previous generations, all in the quest for better efficiency and less over consumption.

The MAX button will obviously be the fastest way to cool a lot of heat soak, as it trying to chill to the lowest possible temperature, not to a higher preset value.

My car is sitting outside in direct sun, shaded temperature is reading 31C as I write. Even with the windows cracked down and sun roof tilted open, the interior surface temperature is over 45C (infrared thermometer check). Let alone the heat soak in all the components, from a day in the sun. That will need a lot of cooling down to reach 22C, let alone 19C.

It is so different than our UK typical range of ambient temperatures, where there may only be a small difference from ambient to cooled temperature.

Peter

[SomeRandomer123]

Originally Posted by HighlandPete

I can imagine the latest systems are a bit more subtle than previous generations, all in the quest for better efficiency and less over consumption.

The MAX button will obviously be the fastest way to cool a lot of heat soak, as it trying to chill to the lowest possible temperature, not to a higher preset value.

My car is sitting outside in direct sun, shaded temperature is reading 31C as I write. Even with the windows cracked down and sun roof tilted open, the interior surface temperature is over 45C (infrared thermometer check). That will need a lot of cooling down to 22C, let alone 19C.

It is so different than our UK typical range of ambient temperatures, where there may only be a small difference from ambient to cooled temperature.

Peter

Yeah my 330d is on Gas Mark 6 at the moment (for its final full day ) and the MAX button works well. Very quick and very powerful. The controllable temperatures are much more subtle but if I were to go out now and set 18 degrees C on both sides, it isn't afraid of cranking the fans to really get it cooled down. The 5er is aimed at a more gentlemanly market though isn't it so perhaps because of that and the hunt for efficiency, it's reluctant to blast you and produce lots of fan n wind noise.

[AP]

I think may be I need to ajust the fan settings, I thought this was only for 'manual' control but quick look at the manual suggest this can be used even in automode

[Jon D]

Originally Posted by AP

I think may be I need to ajust the fan settings, I thought this was only for 'manual' control but quick look at the manual suggest this can be used even in automode

Have you tried scrolling the thumb wheel between the two centre vents? If you turn it all the way to 'blue' it will reduce the temperature very rapidly.

[jedpause]

Originally Posted by Jon D

Have you tried scrolling the thumb wheel between the two centre vents? If you turn it all the way to 'blue' it will reduce the temperature very rapidly.

Yes, was just about to suggest that.... I am not sure the OP's buttons are the same, I don't have a Max button;
But also, even though you use Auto, you must also press the 'cold' button, or icicle picture button for this to really work... turns cold in seconds for me... and even in this 28 Deg heat we are having in the UK!

[AP]

thanks, ys the centre dial between the vents was set to 'blue' and the icicle button was on ie the air conditioner compressor is engaged.

The temperature did cool down but it just didn't fee very agressive in getting that temperature down. My E39 would blast you until he temperature was cooled down inside and then teh fan speed would decrease.

I though that with auto set, the fan speed would be normal an dthe he fan button was for manual overide. I just assume with auto , everything would be catered for you.(as per E39).

Air didn't feel that cold , I can't belive that a 2 week old car would need regassing at this stage , so i doubt its that.

[Jon D]

Originally Posted by AP

Air didn't feel that cold , I can't belive that a 2 week old car would need regassing at this stage , so i doubt its that.

Might be worth a trip to the dealer as this doesn't sound right.
In my Sep '10 F10 I've never felt the need to have the fan above minimum, which means that, with the main temperature dials at 20 deg C, it's virtually silent and very comfortable; if I then want to fine tune the upper body temperature, I just tweak the centre scroll wheel. Additionally, even on the very hottest days, the cabin temperature cools down within just a few seconds after starting the engine.
I have to say that the climate control in this car is the very best I've known and this leads me to thinking that you might have a problem.

[E90Fleet]

AUTO is never very aggressive
It usualy makes the duct temperature correct for what you have set and then the cabin cools down slowly. It will also not blow at the hardest speed through the dash vents.

MAX will set the duct temp to the coldest so the cabin cools down fast and also closes the fresh air flaps so it is only cooling interior air.


I suggest press MAX and let the cabin cool down, then go to Auto to keep it there.


If you do not have a MAX button on your model, put the temps to their lowest position, manually select the dash vents and press the recirculate button to close the fresh air flaps.

[The X Men]

The new BMW's AC system is a bit weak, the AC system in my Audi and Lexus cool down the cabin much quicker. I find myself turning up the fan speed in the BMW just to keep the cabin cool, I thought auto mode is suppose to adjust the fan speed for me. Maybe the auto is being to conservative with the fan speed in an effort to conserve fuel.

[AP]

well popped out in teh car for a short trip. About 25c outside but car had been in shade all day so not warm inside at all.
Tried the max button and its cold air so its not a case of regassing, the system works ok its just the logic behind the system that appears to be less aggresive that what I was used to previosuly on my E39.

(I tell you that E39 was such a good car!)

[Sharbotcom]

Two things:

First, the fan speed can be set to a higher level in auto mode - this tells the auto mode to be more aggressive - so if you have the fan speed set higher it will blast at the beginning (much like youe E39) and then drop down;

Second, you can set up timed venting of you vehicle to push much of the warm air out of your car at specified time. Its called "Parked-car ventilation"
Switching on/off directly
1. "Settings"
2. "Climate"
3. "Activate parked-car vent."

[eskdale]

My 2012 520d M-Sport F11 - This afternoon about 25 degrees outside and quite warm in the car. With it in Auto Mode the fan started slow until the air got colder and then came up pretty fast to cool it down and then gradually dropped back, just as you would expect it to.

[Jon D]

Originally Posted by eskdale

My 2012 520d M-Sport F11 - This afternoon about 25 degrees outside and quite warm in the car. With it in Auto Mode the fan started slow until the air got colder and then came up pretty fast to cool it down and then gradually dropped back, just as you would expect it to.

That's exactly how it works in my F10 - very efficiently.

[Gran Turismo]

Since lots of people are generally complaining about cold drafts from Air Conditions, it wouldn't surprise me that this perceived "slower" cooling down in Auto mode compared to other (older?) cars is actually fully intended by design.
There's still the manual "MAX" option for those who prefer a quicker (is it really?) cooling and don't mind the side effects of the AC going full blast.

Personally, I've never used the MAX option in mine so far.

[Softwareguy14]

My AC dumped on me. BMW had to replace the condenser and there were leaky valves in the main AC unit.