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Here we go....2020 Cross Sport SEL R Taking it in for the ball joint recall and the car has less than 1200 miles on it and going to add this to the list.

Last week I was driving and noticed a loud hissing sound. Like 2x louder then your AC compressor normally charging the system once it reaches the proper temp or about to cycle again. Fades in and out randomly and completely goes away if you turn off the AC. Tried changing the temp, recycle air, auto temp, fan speed, and nothing makes it stop or lessen. Sounds like someone is letting the air out of a balloon and can be heard over the radio easily. I recorded it on my phone so they can hear it when I take it in. Didn't start doing it until recently. WTF?!?

Any ideas?
 

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Update: Dealer stated freon level below normal when I took it in. Added freon and leak detection dye but no leak found. Was told to take home the car and report back in a month. No more hissing and the AC is cold again. Let's see how long this lasts.
 
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