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      06-17-2019, 07:11 PM   #3
Skyline2.0
First Lieutenant
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Drives: 2018 BMW X1 xDrive
Join Date: Sep 2018
Location: United States

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I may be stating the obvious, but try changing the cabin air filters. 20k miles on the original filters is a good amount of time/distance if they haven't been replaced before. It's a huge PITA to get to compared to many other cars, but do-able with a bit of flexibility and patience. Installing new filters should be much easier than getting the old ones out.
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