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      09-19-2023, 07:41 PM   #1
///mChris
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Air conditioner freeze up

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My 2021 m2 has had the AC freeze up a couple of times. I brought it to the dealer. They told me they will only fix it if it freezes while at the dealer. That is obviously tough to do. Any ideas how to get the dealer to fix it?

https://static.nhtsa.gov/odi/tsbs/20...47832-9999.pdf

353000 EQUIPMENT: ELECTRICAL
RECORD_ID: 3318124

Bulletin Number: B640613

Replacement Service Bulletin Number: N/A

NHTSA Item Number: 10205068

Date Posted: 11-01-2021

Component Name: 353000 EQUIPMENT: ELECTRICAL

Make: BMW

Model: M2

Year: 2021

Date Added: 12-20-2021

Summary: Customer may complain of reduced air flow when the air conditioning system is operated for an extended time, usually longer than 30 minutes.

Last edited by ///mChris; 09-19-2023 at 11:28 PM..
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      09-20-2023, 01:44 AM   #2
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Check the gas, you probably have less than half.
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      09-20-2023, 12:40 PM   #3
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The problem is more like the AC is working too well. The fact that it's able to freeze the condensation to the point that no air is able to pass through indicates the gas is likely fine. The fix that BMW published with the link above show they relocate the temperature sensor so that it can detect freezing.

My problem is that you need specific circumstances to reproduce. For me blasting through canyons in 105 degree weather seems to be the best way to experience the problem. Exactly what I bought the car for.
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      09-20-2023, 02:01 PM   #4
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From the f30 forums and the TSB linked in my first post, I see they fit a temperature sensor spacer and flash a lower temp to the AC. It's a $1.50 part and 15 minutes of work. Does anyone know if the same part will work on a f87 that works on f30 and f80?
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      09-20-2023, 05:14 PM   #5
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The problem is the gas, but if you have a lot of free time and you like to waste it, go ahead and mount sensors, spacers and more things.

I dealt with this problem for almost 3 years, the problem was 250g. of gas, when it should have 560g.
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      09-20-2023, 08:45 PM   #6
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My car is a 2021. I checked the gas it was fine
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