[Peter_R]

Originally Posted by kavatski

Did you really expect to be taken seriously?

Most relevant for you!

[kavatski]

Really? Still? Even you must be aware that the manual isn’t always correct and complete, and so can’t necessarily be taken as the final word. I say this as someone who has written technical documentation. Mistakes happen. Omissions (intentional or otherwise) happen. The developers make a change and don’t communicate it, the manual goes to print, and either it isn’t caught or it is but deemed inconsequential. And so on.

In this case, the manual is correct in what it says, but fails to mention that the auto defog program also is active even when the HVAC is in manual mode. That’s it. That’s all. You don’t have to like it (although why this minor HVAC detail should offend you so remains a mystery), but, fortunately, reality continues with or without your approval. 😎

[Peter_R]

Originally Posted by kavatski

Really? Still? Even you must be aware that the manual isn’t always correct and complete, and so can’t necessarily be taken as the final word. I say this as someone who has written technical documentation. Mistakes happen. Omissions (intentional or otherwise) happen. The developers make a change and don’t communicate it, the manual goes to print, and either it isn’t caught or it is but deemed inconsequential. And so on.

Originally Posted by kavatski

In this case, the manual is correct in what it says, but fails to mention that the auto defog program also is active even when the HVAC is in manual mode. That’s it. That’s all. You don’t have to like it (although why this minor HVAC detail should offend you so remains a mystery), but, fortunately, reality continues with or without your approval. ��

[kavatski]

Whoosh.

[Peter_R]

Originally Posted by kavatski

Whoosh.

[ttimbo]

I suspect there may be some differences in terminology at play here. And remember, the F48 is really a MINI, not a BMW — I've noticed quite a few subtle differences with my previous BMWs. This includes the 3 series shown in the BMW Genius video.

Be that as it may, the image below is from my 2016 model's manual:

The terminology issue (and it even raises its head in the manual) concerns the "climate control", the "Auto" function, and the "A/C" function, which the manual calls the "Cooling" function.

As highlighted, if you run the system in "Auto", the A/C "Cooling" function is automatically turned on. But you'll note, it is possible to run the system in "Auto" and turn the A/C "Cooling" function off, just by pressing the "A/C" button so it is not illuminated. And it definitely does turn the chilling effect off on mine (because my wife keeps doing it — too cold, she says &#128580 However, like the "Auto" recirculating function when set to manual, the operation of sensors in the climate control system will turn the "Cooling" function back on — possibly due to humidity, possibly due to ambient vs set interior temperature change...or if you adjust the interior temperature lower.

For me, it's an academic question; like others, I leave it in Auto...and push the A/C button back on when my wife isn't looking 🤫

The other big difference with my F48 over, for example, my previous F20 M135i is that you can't "mix" climate control air and ambient air from the centre face-level vents, which I always enjoyed.

[Peter_R]

ttimbo
Thanks for your response. I live on the outskirts of Oxford and go past the Mini plant often and even have acquaintances who work there. Moreover, in the next village 1 mile away (we walk there and back as an exercise and have just returned) we have the North Oxford Mini BMW Garage, and only 6 miles further on we have the BMW North Oxford Garage. I asked this morning when at the Mini garage at 9.00 am and they confirm that if the A/C is switched OFF, it is completely OFF. Nothing else can happen.
Also because certain people want to dig their heels in and do nothing but try to win an argument without sufficient technical knowledge I rang and asked BMW North Oxford Garage and they just laughed. They said.... When it is OFF, it is OFF, nothing else will happen. Moreover, as I already knew, and you advised you did, they advise everyone it is best left in Auto all the time because this ensures there is no bacteria builds up and causes a bad smell. This was the subject of another post on this forum.

Thanks again and kind regards

[ttimbo]

Well @Peter_R, I can only tell you, from the experience of 4 years' ownership, what happens with mine. That is, if the climate control is set to "Auto", and then the "A/C" function is turned off, the "A/C" function will, at some point, turn on. This is indicated (a) by the LED on the A/C switch and (b) by the change in temperature (especially in Summer) from the vents. I reckon it is a sensor detecting the need to dehumidify, as the air subsequently feels 'drier'. Perhaps this has changed on more recent F48s than mine? We need also to remember not all F48s models are fitted with the automatic climate control system, but more simple, manual air conditioning systems, upon which I offer no comment.

[Peter_R]

Originally Posted by ttimbo

Well @Peter_R, I can only tell you, from the experience of 4 years' ownership, what happens with mine. That is, if the climate control is set to "Auto", and then the "A/C" function is turned off, the "A/C" function will, at some point, turn on. This is indicated (a) by the LED on the A/C switch and (b) by the change in temperature (especially in Summer) from the vents. I reckon it is a sensor detecting the need to dehumidify, as the air subsequently feels 'drier'. Perhaps this has changed on more recent F48s than mine? We need also to remember not all F48s models are fitted with the automatic climate control system, but more simple, manual air conditioning systems, upon which I offer no comment.

So basic models have a different standard to M Sport. Different theatres Australia vs UK may be different as well. I am just going to see what it says in the UK April 2020 pdf brochure.

Edited. The latest says it is as I thought standard.

[Peter_R]

Originally Posted by ttimbo

Well @Peter_R, I can only tell you, from the experience of 4 years' ownership, what happens with mine. That is, if the climate control is set to "Auto", and then the "A/C" function is turned off, the "A/C" function will, at some point, turn on. This is indicated (a) by the LED on the A/C switch and (b) by the change in temperature (especially in Summer) from the vents. I reckon it is a sensor detecting the need to dehumidify, as the air subsequently feels 'drier'.

That is to be expected. Auto has got control.

[kavatski]

Originally Posted by ttimbo

However, like the "Auto" recirculating function when set to manual, the operation of sensors in the climate control system will turn the "Cooling" function back on — possibly due to humidity, possibly due to ambient vs set interior temperature change...or if you adjust the interior temperature lower.

Yes, this is correct -- it just does it even when the climate control is set to manual, and the A/C is set to off. It's not an F48-specific thing either, (I also own a Mini, which doesn't behave this way), since there are numerous threads on this and other forums discussing the identical behaviour on other BMW models. I've never had a vehicle before where A/C off didn't really mean off, so I was initially concerned, but after a search found that it was normal, if undocumented behaviour. Here's just one thread from the F30 forum:

https://f30.bimmerpost.com/forums/sh....php?t=1160120

So the fact that this happens isn't in any doubt. I generally leave Auto off, and rarely use the A/C, so when I'm driving along with the windows down and A/C off on a humid day and suddenly cold, dry air starts coming out of the upper vents, it's obvious what's going on. Others have reported that setting KMV_AKTIV_BESCHLAG to nicht_aktiv disables this but I haven't bothered, given that you can override by shutting the system off entirely.

[Peter_R]

So we are back to this:

Originally Posted by Arthur55

Hi,
Today whilst driving without the A/C on, or the auto on, just manual settings, I seemed to have a problem with the heater/ ventilation. Just using manual control, I had no warmth in the air unless I turned it up to nearly 26 degrees.
Anything below this caused condensation on the outside of the windscreen as we travelled along.
Without auto on, or A/C on, surely the lowest temp on manual is the temp that the ambient air is at as it enters the vehicle?

Anyone any ideas?
Thanks,
Arthur.

Originally Posted by Arthur55

Anyone any ideas?

Just leave it on Auto and set the temperature required. As I stated above and advised by BMW and BMW Mini. This also makes sure there is no bacteria build up the main cause of bad smells.

[ttimbo]

Originally Posted by Peter_R

So we are back to this:

Just leave it on Auto and set the temperature required. As I stated above and advised by BMW and BMW Mini. This also makes sure there is no bacteria build up the main cause of bad smells.

As noted in the first two responses to the OP 🙄

[Arthur55]

Thanks for all the replies. I didn’t mean to spark such a debate.

My dealer has looked at the car and so far says it’s normal.

One basic thing I don’t understand with the system (and I do have an engineering background), is why with auto off, A/C off, in the present UK temps (16 degrees yesterday), if increasing the temp levels it seems that I have to set it up over 22 degrees to see any change in air temp coming out of the vents.

I am wrong thinking with auto off and A/C off, ambient air is drawn into the car, and passed over the heat exchanger to warm it .