I'll try vag-com in the next days to see what it reports..

The alarm goes off when there is a lot of wind, even if my windows are completely up, sunroof is shut and sensor button to OFF.
Usually the wind hits the car from the back to the front.. Are there any other sensors i should be aware of? I know that my trunk wiring has a problem, cuz I don't have any lights in my trunk when I open it and even if the trunk is open, my dash doesn't indicate that it is open.
I don't know if this is valuable information, but i added it just in case..