So I've noticed that after it rains much, if I drive with my windows down I can hear a gurgling noise from somewhere behind me (I'm guessing the sunroof plumbing) that goes away when I roll the windows up and the negative pressure goes away. It also stops if I open the sunroof.

So....normal, or something else to add to the list of things I need addressed at my first service visit? I've never heard anything similar in the other cars I've owned or ridden in with sunroofs, so my money's on abnormal, but figured I'd toss it out there...

 

Have same problem with my 07. Am driving a loaner 2011 now & it does it too. They don't know why.

 

I wouldnt be too concerned as long as the water is not coming in the cabin. I had a car that had a leak where the hoses that were attached to the sunroof were disconnected. (I guess by vibration) Always caused a puddle behind the passenger seat and a wet c pillar. Had to take the headliner down and reattach with silicone.