Coded IHKA Air conditioning setting and now, I cannot turn off the fan

2sporty · 01-18-2015, 04:13 AM

I tried to code:
Air Conditioning will remember if ‘Off’ or ‘On’ from previous shutdown.

The coding went through fine, but now, the fan stays at the lowest setting and I cannot turn it off. Any ideas?

2sporty · 01-22-2015, 03:22 AM

So, it fixed itself after a while. This is one of those weird ones that I would not mess with. I also read that someone else on the F10 boards had the same issue but it fixed itself.

IMMLaw · 01-22-2015, 08:55 AM

I was so fortunate to have an awesome local member help me try and code this and I just about had a panic attack when it didn't work and the AC would remain ON even when the car was off. Fortunately the guy is a genius and was able to restore it to factory settings but for about 15-20 minutes I wanted to kill myself

Boostin FD · 01-22-2015, 09:33 AM

Quote:

Originally Posted by 2sporty

So, it fixed itself after a while. This is one of those weird ones that I would not mess with. I also read that someone else on the F10 boards had the same issue but it fixed itself.

same shit happened to me. I was freaking out hahah. Then after a while it just fixed itself.

Realw5 · 02-01-2015, 08:25 PM

I just tried coding my IHKA and seeing the same behavior. I can no longer turn off my blower, it goes to the lowest setting and nothing else.

How long did it take for it to start working for everyone else?

tom @ eas · 02-01-2015, 08:36 PM

Quote:

Originally Posted by 2sporty

I tried to code:
Air Conditioning will remember if ‘Off’ or ‘On’ from previous shutdown.

The coding went through fine, but now, the fan stays at the lowest setting and I cannot turn it off. Any ideas?

It's part of the calibration process.

AC needs to remain on after coding under 1500RPM to complete initialization, then the light will turn off. This typically takes about ~1min, but can be slightly longer.

Realw5 · 02-02-2015, 07:30 PM

Thanks Tom! Exactly as you said it's 100% functional again. The AC light blinked for a little bit, then everything started working again. Good to know for everyone else that gets scared by this

smithf80 · 02-02-2015, 09:42 PM

Quote:

Originally Posted by tom @ eas

It's part of the calibration process.

AC needs to remain on after coding under 1500RPM to complete initialization, then the light will turn off. This typically takes about ~1min, but can be slightly longer.

Thanks for the explanation, I always wondered why the A/C button blinked and it acts funky after you code it.

E92FI · 05-29-2015, 12:29 AM

Same issue. Recoded AC memory off. AC blower was at lowest setting and wouldn't turn off, AC light blinking. Went for a drive all went back to normal.

jwoo · 12-09-2016, 06:59 AM

I hope you're right, because my blower won't turn off...

But I don't get a blinking AC light???

Will it fix itself?

Also, if I want to restore that specific CAFD file to factory settings, can I just right click and hit code?

te37 · 12-11-2016, 08:16 AM

I had the same problem! Drove around the block and turned off the car then turned it back on and works fine now.

il_sovero · 04-26-2018, 01:16 PM

Hi guys, I resume the post because i'm having the same issue. I retired the car back from the dealer for the LCI taillights update and today (after 2 weeks from the operation) i just figured that AC is not working (LED on but not emitting col air from the grilles). I usually drive with AC off if not necessary.

So I proceeded to code IHKA3 ECU (i have single zone AC panel), but after the process I have not seen the AC led blinking, and the blower can't be turned off. I drove for a while (~5 minutes) but nothing changed.
Anyone experienced this?

I'm really worried because unfortunately here in Italy the climate is getting too warm

///M Houbi · 11-22-2018, 01:17 AM

Cannot turn of blower anymore as well. Will see then what happens after a while..

///M Houbi · 11-22-2018, 10:17 AM

Jupp, all good again. Had to press A/C button and wait until it stopped blinking. Now can turn off blowers again and also no A/C after pressing Auto button 👍🏼

airwalk776 · 11-24-2018, 05:10 PM

There is a calibration time after coding climate control. The ac light will flash repeatedly for few mins before you can change anything. It's expected behavior

Bobo32 · 01-11-2020, 06:39 PM

Quote:

Originally Posted by 2sporty

So, it fixed itself after a while. This is one of those weird ones that I would not mess with. I also read that someone else on the F10 boards had the same issue but it fixed itself.

Hey. How long did it take to go away? I'm having this problem now and it's not going away!

smuttana · 01-13-2020, 10:00 AM

Quote:

Originally Posted by Bobo32

Hey. How long did it take to go away? I'm having this problem now and it's not going away!

Just had this similar problem a few days back. When I selected the "AC" button, it flashed for 1 minute, and then no longer worked, and I wasn't able to turn off the fan.
After I drove for 30+ mins or so, it automatically started working normally on its own. Other forum posts mentioned that it needs to program/calibrate again so takes some time.

Bobo32 · 01-13-2020, 11:05 AM

Quote:

Originally Posted by smuttana

Quote:

Originally Posted by Bobo32

Hey. How long did it take to go away? I'm having this problem now and it's not going away!

Just had this similar problem a few days back. When I selected the "AC" button, it flashed for 1 minute, and then no longer worked, and I wasn't able to turn off the fan.
After I drove for 30+ mins or so, it automatically started working normally on its own. Other forum posts mentioned that it needs to program/calibrate again so takes some time.

Hey thanks for your response. It wasn't calibrating for me. But I think I figured out why. My ambient temperature sensor was reading -25 degC and it would not start the calibration. I have an issue with that sensor and it takes over 24 hours to go back up (it instantly drops to the correct temperature but takes forever to go back up when it's parked in a heated parkade).
Once I got to above 0 degC reading, I was able to calibrate the AC and could turn off the fan etc...

E83Nate · 12-20-2023, 01:33 AM

Quote:

Originally Posted by Realw5

I just tried coding my IHKA and seeing the same behavior. I can no longer turn off my blower, it goes to the lowest setting and nothing else.

How long did it take for it to start working for everyone else?

Oh wow this is the only forum I found on this how did you get it fixed I'm lost mine is either on full or off with fully operational heater dash just doent do anything to air speed. ? TIA

E83Nate · 12-20-2023, 01:34 AM

Quote:

Originally Posted by airwalk776

There is a calibration time after coding climate control. The ac light will flash repeatedly for few mins before you can change anything. It's expected behavior

How I need to do this. I believe I somehow coded my heater it's only on full or off?

tom @ eas · 12-20-2023, 03:16 PM

Quote:

Originally Posted by E83Nate

How I need to do this. I believe I somehow coded my heater it's only on full or off?

See Post #6. This is normal operation and only temporary as it is part of the calibration process.

01-18-2015, 04:13 AM	#1
2sporty First Lieutenant 244 Rep 356 Posts Drives: bmw Join Date: Jul 2014 Location: Munich iTrader: (0)	Coded IHKA Air conditioning setting and now, I cannot turn off the fan I tried to code: Air Conditioning will remember if ‘Off’ or ‘On’ from previous shutdown. The coding went through fine, but now, the fan stays at the lowest setting and I cannot turn it off. Any ideas?
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01-22-2015, 03:22 AM	#2
2sporty First Lieutenant 244 Rep 356 Posts Drives: bmw Join Date: Jul 2014 Location: Munich iTrader: (0)	So, it fixed itself after a while. This is one of those weird ones that I would not mess with. I also read that someone else on the F10 boards had the same issue but it fixed itself.
	Appreciate 0 Quote

01-22-2015, 08:55 AM	#3
IMMLaw Esq. 46 Rep 257 Posts Drives: 2015 M4 Join Date: Nov 2014 Location: Texas iTrader: (0)	I was so fortunate to have an awesome local member help me try and code this and I just about had a panic attack when it didn't work and the AC would remain ON even when the car was off. Fortunately the guy is a genius and was able to restore it to factory settings but for about 15-20 minutes I wanted to kill myself
	Appreciate 0 Quote

02-01-2015, 08:25 PM	#5
Realw5 Private 69 Rep 91 Posts Drives: 2021 BMW M4C Join Date: May 2012 Location: Chico, CA iTrader: (0)	I just tried coding my IHKA and seeing the same behavior. I can no longer turn off my blower, it goes to the lowest setting and nothing else. How long did it take for it to start working for everyone else?
	Appreciate 0 Quote

02-02-2015, 07:30 PM	#7
Realw5 Private 69 Rep 91 Posts Drives: 2021 BMW M4C Join Date: May 2012 Location: Chico, CA iTrader: (0)	Thanks Tom! Exactly as you said it's 100% functional again. The AC light blinked for a little bit, then everything started working again. Good to know for everyone else that gets scared by this
	Appreciate 0 Quote

05-29-2015, 12:29 AM	#9
E92FI Private First Class 24 Rep 102 Posts Drives: F80 M3 Join Date: Aug 2008 Location: SoCal iTrader: (0)	Same issue. Recoded AC memory off. AC blower was at lowest setting and wouldn't turn off, AC light blinking. Went for a drive all went back to normal. __________________ F80 AW Blk- MPE Front Lip/Splitters 2021 L405 ATB Fuji White - Pimento Seats
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12-09-2016, 06:59 AM	#10
jwoo Second Lieutenant 66 Rep 235 Posts Drives: 2020 M2 Competetion Join Date: Nov 2016 Location: Louisiana iTrader: (1)	I hope you're right, because my blower won't turn off... But I don't get a blinking AC light??? Will it fix itself? Also, if I want to restore that specific CAFD file to factory settings, can I just right click and hit code?
	Appreciate 0 Quote

12-11-2016, 08:16 AM	#11
te37 Major 545 Rep 1,132 Posts Drives: F80 SS/SO 6MT Join Date: Jun 2013 Location: ATL iTrader: (3)	I had the same problem! Drove around the block and turned off the car then turned it back on and works fine now.
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04-26-2018, 01:16 PM	#12
il_sovero New Member 3 Rep 16 Posts Drives: 218d Msport Join Date: Jan 2017 Location: Italy iTrader: (0)	Hi guys, I resume the post because i'm having the same issue. I retired the car back from the dealer for the LCI taillights update and today (after 2 weeks from the operation) i just figured that AC is not working (LED on but not emitting col air from the grilles). I usually drive with AC off if not necessary. So I proceeded to code IHKA3 ECU (i have single zone AC panel), but after the process I have not seen the AC led blinking, and the blower can't be turned off. I drove for a while (~5 minutes) but nothing changed. Anyone experienced this? I'm really worried because unfortunately here in Italy the climate is getting too warm
	Appreciate 0 Quote

11-22-2018, 01:17 AM	#13
///M Houbi Major 1653 Rep 1,237 Posts Drives: M2 Competition Join Date: May 2018 Location: Switzerland iTrader: (0) Garage List 2019 M2 Competition [0.00] 2003 E46 330Ci [0.00]	Cannot turn of blower anymore as well. Will see then what happens after a while..
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11-22-2018, 10:17 AM	#14
///M Houbi Major 1653 Rep 1,237 Posts Drives: M2 Competition Join Date: May 2018 Location: Switzerland iTrader: (0) Garage List 2019 M2 Competition [0.00] 2003 E46 330Ci [0.00]	Jupp, all good again. Had to press A/C button and wait until it stopped blinking. Now can turn off blowers again and also no A/C after pressing Auto button 👍🏼 __________________ Instagram \| M2 Competition Build Thread \| A tribute to my E46 330Ci
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11-24-2018, 05:10 PM	#15
airwalk776 Private First Class 49 Rep 152 Posts Drives: 2011 Z4 sDrive35is Join Date: Oct 2007 Location: New Jersey iTrader: (0)	There is a calibration time after coding climate control. The ac light will flash repeatedly for few mins before you can change anything. It's expected behavior
	Appreciate 0 Quote