| Mercedes A160 class
Hello,
I have a mercedes A160, year 2000, I have had this from new, and has been a great car, but now winter is upon us (uk), I do not get any air flowing out of the two air vents on top of the dash, so the front windscreen do not demist, anybody any I dea what could be blocking or disconected to cause this, all the other air vents work fine. Thank you. | 
