Thanks JC ! bit of a dig but any info is good info when you need it.
I know 9 months late, but i done some searching on the web and it was hard to find anything relating to this subject. So to make it easier i just wrote what i went through to fix it. Oh and by the way if you want to get rid of the buzzer pull the circuit board of the back of the demister area ( 3 screws ) and the buzzer sits on that board closest the dash soldered with a + symbol on it.