I have a strange alarm fault developed on my audi a4 (2001).
Once the outside air temperature gets down to 45 degrees F (generally in the
middle of the night) the audible alarm goes off (the lights do not flash).
This continues for a couple of minutes and then generally re-occurs about an
I have checked all other aspects of the general alarm system (motion and tow
away) and everything functions correctly - ie sound and flashing lights. I
am assuming that my problem may be with a faulty frost sensor.
Has anyone on the NG had a similar problem and can anyone tell me where the
frost sensor is located.