Add me to the 2018 M3 club. It's been happening only with the cabin camera for about the last 6 months. Resetting DAS didn't help me. But then it will just randomly start working and stay working for about a month before cutting out again. Doesn't seem to correlate with any software pushes. The first time it happened I booked service using the phone app, and they scheduled me for the following morning at an SC hundreds of miles away. I asked why, when there are three SC's within a 40 mile radius of me. Never received a reply so I cancelled. I'm starting to believe it's more of a 2018 FSD CPU or CPU-retrofit hardware issue rather than a software bug, which would seem to have a wider gamut of model year owners screaming. Probably deemed too expensive for them to fix and they're just hoping we go away while pacifying us by saying a fix is imminent. The scant few reports I've seen from other model years that have posted may be due to a rare actual camera hardware failure.