just reported to my SA that mine had done this 2 or 3 times, but not "regularly" so he said he'd have to check with BMW to see if they'll let him replace the parts as the parts replacement is only authorized if it's frequent.. apparently, some cars only need a software patch, while others need both parts and software. He is also having to do the same with my DVD player for the rear entertainment. I guess they can't just change parts out as they deem fit without first checking with BMW to see if that makes sense. Which is a good thing I suppose.

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BMW - X5 4.8i w/all US options packages, 19" Y wheels, White/Tobacco, Huper Optik 50% tint
Mercedes Benz - E320 CDI Park Assist, NAV, Folding Mirrors, Premium Sound, Voice Command, Sunroof, Auto Rear Shade, Bi-Xenon