04-23-2024, 04:44 PM | #1 |
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AC evaporator failure?
5k miles on my MY2023 car, last week noticed the car was blowing only cool air on the passenger and rear vents. The driver side vents blew coldish air on max AC. Dropped off the car yesterday and they said they don't know the cause but think it's the AC evaporator which sits inside the dash. Seems like a pretty invasive repair. I don't think I've seen anyone else with this issue?
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04-24-2024, 07:53 AM | #2 |
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That's pretty random, and an unlikely failure. I can't really tell from your post what your symptoms are. When you say cool air on the passenger and rear vents, is that full COLD air like the AC is working properly? Are you getting full cold air ANYWHERE? If so, that would mean your evaporator is working properly. And I would suspect the blending doors in the AC system to be at fault, not the evaporator. If you're not getting ANY cold air at all, then I would suspect the actual cooling system (evap, condensor or compressor) at fault. And honestly, the evap would be the last thing I would suspect since it's new and it's something that really only fails from rust. Unless it's just defective.
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04-24-2024, 10:37 AM | #3 | |
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A quick search on this symptom shows it shows up quite a bit on G30 cars, but not so much on the G20s. https://g30.bimmerpost.com/forums/sh....php?t=2042300 The possible evap issue is from the dealers mouth, which they have done a single day of testing with the car. I really_really hope it is not the evaporator as I saw what it. takes to get that replaced (everything from seats forward) |
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04-24-2024, 10:49 AM | #4 |
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It sucks, but failures happen. Nothing you can do but let them warranty it.
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04-24-2024, 10:56 AM | #5 | |
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2. Honestly, I wouldn't lose a minute of sleep having the dash pulled apart like that. It'll go back together fine. Take lots of pics of the interior before you bring it in so you make sure there are no scratches that show up afterwards, otherwise...you're good. |
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04-30-2024, 06:56 PM | #7 | |
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It came in from the factory with no refrigerant, then they determined an AC line was leaking, now a year later i'm getting the Evaporator replaced. I was told it is a big job as well, not super thrilled but what can you do.
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04-30-2024, 07:21 PM | #8 | |
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04-30-2024, 09:03 PM | #9 | |
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The evaporator is supposed to arrive soon but it's a big job getting access to it under the dash.
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05-01-2024, 08:13 AM | #12 |
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That is crazy. How wasn’t that covered? I’ve never had an issue getting my issues approved in the 8 visits I’ve had for warranty issues
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05-01-2024, 08:25 AM | #13 |
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My car was modded to much according to them, although none of the mods had anything to do with the AC system.
Tried a few dealers around me and none happen to be aftermarket mod friendly. Was for the better anyway. I didn’t like the idea that a new tech would probably for the first time in his career rip up my dashboard out and not forget a few nuts and bolts at the end. Funny thing, I did this twice. The first time I took my evaporator to a radiator repair shop to have it repaired and that worked for about a month lol. Next time I just bought the entire AC evaporator and blower assembly from eBay and it’s been going strong ever since. These do have a known weakness, same evaporators are used on a few different bmw models and I believe on the x3 they do have a service bulletin out for it. Here is where the leak was and my initial fix which didn’t work. The evaporator pipes are very flimsy and to me it looks like a very poor design |
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05-01-2024, 09:49 AM | #15 | |
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05-01-2024, 09:59 AM | #16 | |
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05-01-2024, 09:59 AM | #17 | |
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05-01-2024, 11:41 AM | #18 |
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Far past that point, outside of the 1 year criteria and didnt expect to continue having issues. I have considered ordering a 2025 at times but prices have continued rising along with rates vs. when I bought mine.
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05-01-2024, 11:43 AM | #19 |
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Yes it does. They claimed to have seen dye leaking in those areas when they did previous repairs so that is why they amended those parts. Now somehow two days in to diagnosing this time, BMW instructed them to replace the evaporator which it now seems is a weak point. But like other things, BMWNA doesnt want to jump straight to that first.
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05-05-2024, 11:01 AM | #20 |
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Happy to report I have it back and have ice cold air.
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05-07-2024, 12:39 PM | #22 |
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That is absolutely ridiculous. Its like they don't try to figure out what is causing these issues and revise the design. Hearing things like this make me reconsider keeping the car long term.
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