I haven't had an issue with mine yet, but I have worked on several automotive AC systems. It has been my experience that a slight drop in pressure could result in the AC clutch not engaging so what mikerx5 says makes sense and is an easy low cost step.
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2015 F06 M6 Silverstone Metallic II, Individual Full Leather, B&O, Night Vis, CCB, RKAutowerks (CP Rods/Pistons, DI Cams, CF Intakes, Coated DP's & Billet Diff Brace), InfinityAuto Turbo Inlets, Mishi Oil Cooler, JB4, XHP S3, BM S3
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