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Air Conditioning 2019 Atlas

3917 Views 4 Replies 4 Participants Last post by  paul_browne
New here and wondering if anyone has had this problem...and any luck getting it fixed.

I bought a new 2019 Atlas this past March (dealer still had some of them on the lot). By the end of April, my air conditioning was blowing hot. I took it back to the dealer and after 2 days of inspection, they said that it was bone dry, so they refilled the refrigerant (not sure if that's the right term) and added dye to the system because they couldn't find any leaks. By the second week of June, it was back to blowing hot. At first, it was just the passenger and rear vents, but eventually all were blowing hot air. So, I went back to the dealer. While their poor communication and issues ordering parts was frustrating, after having it a little over 3 weeks, they said it was fixed and that the evaporator core was the issue.

I was really hoping that fixed it, but I was waiting outside to go into the dentist last week when I noticed it was blowing fairly warm while in idle. Warm enough that I registered as a fever when I went inside for my appointment. Same thing happened to the kids later on in the week...which is when I noticed that their vents were blowing hot again. We took it out for a long drive on the highway the other night, because we'd just taken it on a long trip and it was fine. Plus I know some vehicles a/c blows warmer when idling. At the start of the ride, I had cool air and everyone else had hot air. By the end of the ride, we all were getting hot air and my short trip to the grocery store yesterday was all hot air.

I'm guessing it's some kind of leak that they just haven't been able to find, but who knows. During our road trip last month, we had a period where all of the front vents just stopped blowing any kind of air. You could hear it under the dash trying, but wondering if it's related. Odd, but that one just corrected on it's own...like it was blocked, and then it wasn't. I've got an appointment to bring it in to a different dealer in hopes that maybe they'll have better luck fixing it, but I'm wondering if anyone else has had this problem and how it was solved. I love the vehicle, but it's just too hot here to not have a/c and I'm losing my mind that something so new has this recurring issue. Thanks!
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Leaking refrigerant or a bad blend door would be my take. The blend door was a known issue on some.
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I would go to another dealer. The proper leak check protocol is to evacuate the system and put the system under vacuum to search for leaks. If it holds the vacuum then it is OK and if not they usually check the shrader valves where they charge the system. The other possibility is that a servo motor that opens and closes your vents or switches between heat and cooling are not working properly. Be persistent, this is not brain surgery.
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I would go to another dealer. The proper leak check protocol is to evacuate the system and put the system under vacuum to search for leaks. If it holds the vacuum then it is OK and if not they usually check the shrader valves where they charge the system. The other possibility is that a servo motor that opens and closes your vents or switches between heat and cooling are not working properly. Be persistent, this is not brain surgery.
Thanks! Yeah, I'm trying a different dealer this time. I figure the other one had two chances and I also wasn't happy with their general customer service. My gut says part of it has to be a leak and they just weren't using the right testing methods, but I also suspect there's something additional with the vents.
Most of the hi MQB platform cars with electronic AC controls have a climate area baseline setting within the air conditioning system. Often this is set for a cooler climate and therefore less cooling. I found this setting this using VCDS to a hotooer climate baseline has made my car us much more comfortable in Virginia summers
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