Rear a/c is making a hissing noise

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My 2021 ford expedition limited max has a hissing sound coming from back a/c. I was wondering if anybody has that noise before. I haven't taking anything part yet took.

 

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https://youtube.com/shorts/qEUvvpPpWf8?si=H9iD2SoVdIQpxSPc

here is the video of the noise.

 

[S20Workstation4]

I had the same issue....there is a leak somewhere.
The noise you're hearing is not the leak, it's the rear expansion valve.

Because the rear expansion valve is making that noise, check the rear A/C evaporator, or both the rear Hi/Low pressure lines that go underneath the vehicle.

 

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Thanks for the info