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M2 Technical Topics > Mechanical Maintenance: Break-in | Oil & Fluids | Servicing | TSB | Recalls > Is it normal for a 1 year old cars refrigerant to be low with 0 leaks.

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      04-13-2020, 08:59 AM   #1
saphire240
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We had one of our first warm days so I decided to take the awesome M2c out for an essential drive to get some gasoline. I noticed after a while that it was quite warm and turned the ac on very low(with the windows down). Eventually I turned it up because I was still hot and then realized it was blowing out very warm air.
After taking it to the dealer and reading the report, there was zero leaks to be found, yet there was only 79grams of refrigerant in the car and filled it up to 550g. Is this something that they might've over looked during preparation for the car at time of delivery? I find it very odd and a little annoying I'd have to deal with something like this on a newer car that's only a year old.
On the bright side they gave me a new m340i which was extremely comfortable.
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      04-13-2020, 08:56 PM   #2
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Was it humid? I've never had an AC problem in my M2 but in my F30 I had an issue pop up once where on a humid day the AC and fans would be on the max setting but no cold air was coming out of the vents. It turned out to be an issue with the evap coil freezing up:

https://f30.bimmerpost.com/forums/sh....php?t=1285813
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      04-15-2020, 09:36 PM   #3
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Yes, according to BMW it is normal to lose refrigerant over time especially 1 or more years.
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      04-17-2020, 09:46 AM   #4
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Normal for a new car according to Bmw? So maybe every year I have to fill up my refrigerant?
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      04-17-2020, 10:36 AM   #5
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Originally Posted by saphire240 View Post
Normal for a new car according to Bmw? So maybe every year I have to fill up my refrigerant?
No you should not need to "top off" a functioning system.
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      04-17-2020, 12:08 PM   #6
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The AC in my 2005 Mini Cooper S was still good when I sold it in 2014. But I used it everyday, so the seals were unlikely to dry out and leak.

My local car AC specialist was impressed when he tried it (he was regassing the E46 at the time...)
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