A/C always on at start

RATED_M · 03-30-2024, 07:22 PM

Just bought an F86. The A/C is always on at start, even though if I had it off when I last shut the car off. If I try to shut the A/C, it won't let me until the engine has been running for a few seconds.

Is this normal?

tfunk88 · 03-30-2024, 09:11 PM

Yep. You can use BimmerCode to code it so the system defaults to the last setting when the car was turned off

RATED_M · 03-30-2024, 09:13 PM

Quote:

Originally Posted by tfunk88

Yep. You can use BimmerCode to code it so the system defaults to the last setting when the car was turned off

Weird - is this just an F series thing? My E92 doesn’t do this.

tfunk88 · 03-30-2024, 09:14 PM

Not sure which series have it, or when it started. Just know that when I got my 2016 last year it frustrated the hell out of me lol

jab23 · 03-31-2024, 07:10 AM

That is weird. Mine stays on or off depending on where it was last. I've never had the car coded.

Qsilver7 · 04-02-2024, 05:32 PM

That is the usual operating parameter of BMW’s IHKA (auto climate system) for decades. The ones that had the IHKR (manual system w/dials)…when the AC was turned off…it stayed off. But the IHKA systems turn themselves back on if you turned them off and then didn’t come back to the vehicle within 15-16 minutes (the consumer cut-off time interval).

If you want the system to still be off…the normal operating parameters is to simply PRESS the << fan speed button ONCE and the system turns off again.

Now with Bimmercode and other coding apps/software, you can change how the system operates.

suitedcboy · 04-12-2024, 05:53 PM

The a/c doggedly always on is rooted in clear visibility and decreased drowsiness. In much of the US, much of the driver-rich part of the world, there is enough humidity that rainy days or cool mornings make humidity reduction the best way to clear windshield and side windows quickest. Higher humidity makes you more likely to be drowsy. It is a feather in your cap to be able to say you provide a safe driving environment or to not be called out for not doing it. I'm in TX, I want a/c, most months of the year, to have the car cooling when I walk within 25 feet of it. Variable displacement compressors make the HP loss-mpg penalty negligible so much of the time.

03-30-2024, 07:22 PM	#1
RATED_M Major 43 Rep 185 Posts Drives: E92 M3 Comp Join Date: Jan 2012 Location: New York iTrader: (0)	A/C always on at start Just bought an F86. The A/C is always on at start, even though if I had it off when I last shut the car off. If I try to shut the A/C, it won't let me until the engine has been running for a few seconds. Is this normal? __________________ Current: 2011 Jet Black ///E92 M3 Comp DCT Previous: 2017 Yas Marina Blue ///M3 \| Silverstone \| DCT 2018 Citrin Black 340xi \| Dakota Black \| 8-Speed Auto
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03-30-2024, 09:11 PM	#2
tfunk88 Lieutenant 195 Rep 481 Posts Drives: F15 X5 50i Join Date: Apr 2023 Location: WV iTrader: (0)	Yep. You can use BimmerCode to code it so the system defaults to the last setting when the car was turned off
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03-30-2024, 09:14 PM	#4
tfunk88 Lieutenant 195 Rep 481 Posts Drives: F15 X5 50i Join Date: Apr 2023 Location: WV iTrader: (0)	Not sure which series have it, or when it started. Just know that when I got my 2016 last year it frustrated the hell out of me lol
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03-31-2024, 07:10 AM	#5
jab23 First Lieutenant 224 Rep 376 Posts Drives: 2017 X5M Join Date: Sep 2020 Location: MA iTrader: (1)	That is weird. Mine stays on or off depending on where it was last. I've never had the car coded.
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04-02-2024, 05:32 PM	#6
Qsilver7 Major General 4452 Rep 7,491 Posts Drives: F06 650ix GC / F15 X5 50i Join Date: Oct 2016 Location: Indiana, USA iTrader: (0)	That is the usual operating parameter of BMW’s IHKA (auto climate system) for decades. The ones that had the IHKR (manual system w/dials)…when the AC was turned off…it stayed off. But the IHKA systems turn themselves back on if you turned them off and then didn’t come back to the vehicle within 15-16 minutes (the consumer cut-off time interval). If you want the system to still be off…the normal operating parameters is to simply PRESS the << fan speed button ONCE and the system turns off again. Now with Bimmercode and other coding apps/software, you can change how the system operates. __________________ 2015 F06 650ix Gran Coupe`(Moonstone/Cohiba Brown)\| 2014 F15 X5 50i MSport (Space Gray/Mocha) Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.
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A/C always on at start

04-12-2024, 05:53 PM	#7
suitedcboy Cattlecar 42 Rep 141 Posts Drives: 2016 X5 50i MSport Join Date: Sep 2022 Location: Ponder Texas iTrader: (0)	The a/c doggedly always on is rooted in clear visibility and decreased drowsiness. In much of the US, much of the driver-rich part of the world, there is enough humidity that rainy days or cool mornings make humidity reduction the best way to clear windshield and side windows quickest. Higher humidity makes you more likely to be drowsy. It is a feather in your cap to be able to say you provide a safe driving environment or to not be called out for not doing it. I'm in TX, I want a/c, most months of the year, to have the car cooling when I walk within 25 feet of it. Variable displacement compressors make the HP loss-mpg penalty negligible so much of the time.
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