Stayed with my OH few nights ago and parked my car round the side of his house.

Came down in the morning to find all the windows wide open and where the rain was going in the windows it was setting my alarm off!

Can't think why i would do this?

It was only like it for a couple of hours before i realised, must have been about 7am ish that it did it we've worked out.

I wonder if his neighbours unlocking their car with their remote fob (they have an audi too) ?

I can't think why else it might have done it, its not done it before!