Did you find the problem?

 

You can, but I bet the answer is far simpler: try replacing the switch. I think there's a very good chance that's all that is wrong. The motor isn't going to simply turn on and off for no reason. More than likely a little crud in the switch which is preventing it from operating correctly.

 

Happened to me last year while on the highway. Completely on its own. . Maybe used the sunroof twice in 15 years. Removed fuse…. Done!

 

Ran into this issue today. I haven't driven the car for a couple of weeks. During the drive today, I heard noise from the sunroof, pull the shade and saw it was opened about an inch. So I closed it. After ~30 sec, the roof opened all the way by itself. I closed it. Don't know what happened. Reviewed this thread but no one seems to able to identify the root cause. I wonder if it is the switch.

 

What I found was the switch goes to a small circuit board through a ribbon cable. I pulled the ribbon cable out and it had some corrosion on it. I wiped it off and plugged back in and working fine. Sorry I didn’t take any pictures. It is all under the cover where the switch is located. Also before I fixed it I got the sunroof to close then pulled fuse so it would not open again. Fuse is in trunk. Hope this helps!!

 

This is turning into a Steven King novel - lolz

 

So that is the upper control switch area panel and upper interior light area that has the electronics connector for the rear view mirror, sunroof motor etc etc. Nice catch - glad you sorted it out. Wonder how moisture got in there - is it time to check the drains on the sunroof?

 

It happened again (since my last post here). Here is what happened this time
Rolled down my driver side window and the moonroof opened at the same time. Both open/close, tilt buttons were not working.
After driving it home and turn off and restart the car, I was able to close the roof again using the button.
I probably will open up the switch to see if there is anything going on there.