I have a similar problem as Mike (13 Nov 04)developed on my Audi A4 (2001).
At night with similar air temperature my alarm goes off but the lights also
flash. It is then difficult to unlock the car with the key fob and usually
I have to resort to using the physical key to turn it off and on. After
this the locks continue to click for a few minutes. Does anybody know how
to resolve this?