HELP! windscreen demister
Hope someone can point me in the right direction,please! I have a 2003 2.5tdi quattro sport,when I press the button for the windscreen demister,no air comes out of the vent on top of the dash,only through each end of the fascia vents,but not the middle two.. As you can imagine,this is doing my head in,especially at this time of year,it is a nightmare trying to keep the screen clear.Even at running temp and on auto,the screen will not clear. Please has anyone any ideas? I realise it's not like the old days when cables used to snap or sieze up.. Thanks for taking the time to read this,and thanks in advance for any suggestions..