I thought it was just me. At least a half dozen times yesterday the wipers would swipe across a dry windshield once or twice each time I put it in ‘D’. I thought maybe the camera/sensor was detecting bug splat on the windshield near the rear view mirror. But that wasn’t the case. Today, operating normally.My wipers have just started turning on for no apparent reason (no rain). I have to start wash mode and they’ll run their course, but that’s happened twice now in two days. Hope there’s a fix coming out. Harsh on the wipers to drag across a dry windshield.
I leave mine off until I need them, and then I put them on auto. This is how I’ve done it with every car I’ve had with automatic wipers. To me the added value isn’t having the car turn them on for me, it’s having the car modulate the speed appropriately.
In the early M3 days, there were also even more issues with the auto wipers. If you left them on auto, they would start wiping with high velocity when you opened the driver’s door; soaked me several times before I could get in the car! Luckily seems they wait til you put the car in drive now
IIRC the owners manual warns against using windshield washer fluid with hydrophobic characteristics like RainX or with bug cleaner in it.