m3 sunroof w/ a mind of its own!!!

[m3indamakin]

Im not sure what causes it exactly, but my sunroof opens automatically. It does it in a pulsing motion, rather than open all at once. I know it happens when I turn my sound/subs up pretty loud, and i think it also does it when i drive on the freeway. Is there a sensor, or something that is causing this?
It has opened back, and even the back tilted down, to appear like "ramair"...really bothers me...

[Chet]

My E46 also has sunroof issues once, if your E46 still has warranty I'd recommend you bring it to the dealer and have them check it out.

[1q2w3e4r]

Common problem. Try holding the sunroof button down for about 20 sec and see if it resets the system.

[Mac0485]

Mine works properly but i was on the highway and closing the sunroof and all of a sudden i hear a SNAP and the plastic piece that flips up in the front just snapped off. I was really pissed.