No issues with my M6GC but I have had some similar issues with my wife's 550. The last time we ended up replacing one of the comfort access/ door lock actuator assembly, on one occasion it was the FOB battery and on another occasion we had a blown fuse.
Seems when there is an issue with the system functioning properly when one of the other modules has some sort of malfunction. I think you can isolate the problem by unplugging on of the door locks. If you decided to DIY replace the actuator or handle buy it from fcp euro as you'll likely end up replacing it again if you own the car long enough.
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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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